GSXR813 Turbo EFI

[slingy88]

Hi gents,

Been on other forums for a while and decided i'd be better off with the cool kids here and maybe participate in some local events
My bike isnt exactley a fighter but i think it will still be of interest to some folk ;)

Specs;
1988 GSXR750
3mm overbore using 05 ZX10 pistons to get low compression ( currently a bit low at 7.5-1) and forged pistons.
IHI RHB5 turbo, headers made from cut up 92 gsxr750 headers and 50mm pipe through to muffler and in built oil return to oil pickup but not a reed.
Microsquirt V2 EFI, using GPZ1100 34mm Tb's, GPZ750turbo plenum and IAT sensor, Mazda RX7 460cc injectors, homemade fuel rail, SARD FPR, Pierburg pump, GM copy 3 bar Map sensor and coolant sensor, Ford Edis type 4 post waisted spark coil and 8mm silicone leads and a Triggerwheels.com 36-1 trigger wheel fitted to the remains of the oem suzuki one.
Triumph SSSA and wheel with a Renthal 46T rear sprocket, a custom 16T 17mm offset front sprocket and a RSV1000 Sach Shock.

All this is my own work, the only thing that got farmed out was the block boring for the rebore.

Finishes are SH#t but once i get it all working i will look at a full rebuild and sorting it out propperly but will do till the bugs are ironed.

I'll just post a heaps a pics and let them speak for themselfs.

Cheers Peeps

Slingy

[slingy88]

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/100_0362Medium.jpg

[slingy88]

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/100_0336Medium.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/bike_01Medium.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/100_0429Medium.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/100_0458Medium.jpg

[slingy88]

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/100_0425Medium.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/100_0628.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/100_0630.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/P1000388800x600.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/P1000847800x600.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/P1000840800x600.jpg

[80s freak]

That's damn cool!

[slingy88]

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/P1000878800x600-1.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/P1000876800x600.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/P1000872800x600.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/P1010034800x600.jpg

[slingy88]

That's damn cool!

Cheers Mr Freak ;)

[slingy88]

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/27042011053.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/01072011063.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/03082011098.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/03082011094.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/03082011093.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/03082011090.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/20082011145.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/15082011131.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/19082011136.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/bike007.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/bike005.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/bike002.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/bike004.jpg

[slingy88]

ok, thats a very brief glimpse of where i am up to. These are only a small sample of the pictures a have so if there is anything you would like to see in more detail let me know as i probably have apicture of it.
Plus i have alot of pictures of building the carbs adn plenum from when i started first down that route.


Cheers all

Slingy

[xa-mont]

every cunt's got a turbo now!!! :P

Nice job on it mate! It's pretty subtle under the fairing.

[80s freak]

every cunt's got a turbo now!!! :P

Nice job on it mate! It's pretty subtle under the fairing.

Jealous much? The aprilia would be awesome with a superccharger whine.

[BANDITROD]

Holy fuck that's sweet well done mate

[slingy88]

Cheers Guys

[K6Thou]

Nice work mate !!!!! its like putting a 383 into a HB torana and then having everyone wonder how you got away from the lights so quickly... lol

[EXBEN]

Jealous much? The aprilia would be awesome with a superccharger whine.
Funny you should say that I'm fitting one at the moment

[EXBEN]

nice work by the way slingy

[Surt]

awesome work mate id luv to see more pics on frame and swinger mods well throw out every foto u have did u fix the frame and engine in a jig or wat?

[latheboy]

Nice work slingy, have you had it running lately?

How's the tune?

[ozzy1100]

thats the shit mate love it you will find more than of a few of us here gear heads
and i cant wait till i can aford to get a ac tig for ally lol

[Gitzy]

Thats seriously awesome. Nice work Mate.

[xa-mont]

Funny you should say that I'm fitting one at the moment

Pics or it's all a lie!

[Surt]

and btw nice to see another squirter on here slingy... 88! bah

[slingy88]

Nice work slingy, have you had it running lately?

How's the tune?

Its just fired back up after the swingarm work to test everything is still ok. It starts great from cold, warms up sweat and is roughly mapped through to about 7000rpm at 10psi. need to get it on the highway then should easliy get the rest tuned. Once i have it tuned at 10psi its disconnect wastegate time for i'm guessing somewhere between 20 and 25psi. The current tables are all set for these pressures and should be easy to foolw the 3D maps to guestimate some good values for these higher boosts, then fine tune them down.
So. in short its ridable, just needs a bit of time riding to autotune it.;)

[ozzy1100]

what reff do the micro squrit use for the auto tune

[slingy88]

awesome work mate id luv to see more pics on frame and swinger mods well throw out every foto u have did u fix the frame and engine in a jig or wat?

Hey surt,

I'll give you a quick run down of the process that i used, but not saying its the best but was what i could do with what i had.

So, to start, slingy is 20mm swingarm spindle and sssa is 25mm, so i decided to use the sssa one as it was just a tube with the ends threaded to take bolts so was easy to shorten to suit, where i would have had to make a whole new longer 20mm one.
so i bored the frame using a 25mm carbide tipped holesaw which give a really clean cut and to make sure it stayed accurate i removed the 5mm pilot drill and machined a new 20mm pilot to fit the frame, stepped down to 5mm to fit the holesaw. This actually worked great but was VERY slow as the teeth kept fouling as there was nowhere for the swarf to go . Probably 45-50minutes per side.
I then thought about the whole Jig or not to jig question and decided i could get away without, mainly because the right side if the frame remains in place the whole time so gives a known point of reference.
So given the right side of the frame was staying i just decided to witness mark the frame across the cut lines and take measurements from the between the output shaft on the motor and the SSSA spindle, and also from the spindle to the frame cross braces both above and below. This then gave me several ways to cross reference the placement of the moved section of frame.
Then i cut the frame out with a hacksaw to minimise the kurf width, squared the witness marks back across the cut ends so they could be used to line with the origional outer frame marks.
Then, reset the frame offset with the spindle in, lined it all up with the witness marks, cross referenced with the measurements taken off the engine and frame points, then tacked it in, measured again, then pre-heated the whole section of frame with a gas torch before hitting it with the full 215A my TIG can muster.
Tripple fillet welds on both sides top and bottom, then plated with 6mm plate over the top to blend the cut edge back into the frame, these were welded with about 165A, all done in one session of welding to keep as much heat in the materials as possible to keep penetration to a maximum.
I'll post all the pictures i have of it, though i dont have any of the cutting as i forgot about the camera for the first bits of the moddding.

Cheers

[slingy88]

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/01072011064.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/01072011065.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/01072011066.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/01072011068.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/03082011097.jpg

[slingy88]

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/03082011101.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/03082011092.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/03082011091.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/04082011104.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/05082011110.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/15082011134.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/15082011131.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/22082011147.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/22082011148.jpg

[slingy88]

thats the shit mate love it you will find more than of a few of us here gear heads
and i cant wait till i can aford to get a ac tig for ally lol

I LUV my AC tig. Best tool in the shed ;)

[slingy88]

what reff do the micro squrit use for the auto tune

I'm running Tunerstudio which has a real time auto tuner built in, so it tunes as you ride, then gives you the option to keep the changes its made to the table or not, lock out parts of the table if your happy with them and various other things. I'm using an Innovate wideband O2 sensor connected to the microsquirt to allow this tuning to work.

[ozzy1100]

I LUV my AC tig. Best tool in the shed ;)

i had the choice of my colchester lathe that came up at the right price or a cheep ac and as id never get a colcester for under a grand ever again i took it but still want ac lol
i have dc that i use for s/s fad at work so no big deal
wide band diff the way to go didnt know it worked with the micro squirt very intersting btw the frame work is shit hot

[Surt]

thanks for pics and time spent slingy hopefully u dont need to anneal cast alloy once u pre heated the welded parts

[slingy88]

i had the choice of my colchester lathe that came up at the right price or a cheep ac and as id never get a colcester for under a grand ever again i took it but still want ac lol
i have dc that i use for s/s fad at work so no big deal
wide band diff the way to go didnt know it worked with the micro squirt very intersting btw the frame work is shit hot

You did well to get a colchester for that price!! My lathe if my second favourite tool, recently upgraded my Myford to this 13x40 machine.

http://i557.photobucket.com/albums/ss11/slingy88/kids022.jpg

[Gix11]

So does the rear wheel sit dead centre after all the work? I guess that was compensated for with the frame and sprocket offset.

[Surt]

must of been adjusted with a spacer just my guess

[slingy88]

So does the rear wheel sit dead centre after all the work? I guess that was compensated for with the frame and sprocket offset.

Yep,it sure does, and like you say thats the whole reason for the frame mod.
Basically, with the wheel fitted to the SSSA i ran a straight edge down either side of the rim and marked these points on the swingarm pivot. The centre of the 2 marks is the centre of the rim at the swingarm pivot and witness marked with the centre punch as this is what everything needs to relate to.
From memory the GSXR arm was 230mm across the pivot, the frame was 235mm gap and the SSSA was 282mm across.
So to make the arm fit, first job was make the right side the same width from the centreline as the gsxr one which would be 115mm. The SSSA was 141mm, so 26mm was removed from this side of the arm and the bearing carrier welded back on to suit, then the excess arm material cut off and the hole plated over with some 6mm plate.
So with the wheel in the centre of the bike the difference between the centreline of the wheel and the inner face of the sprocket carrier between the GSXR and the SSSA was 17mm. (This was also double checked once the arm was in by holding a straight edge up against the rear sprocket and measuring the gap between it and the front one which it was. This was good as if the arm was pissed one way or the other in the frame, this measurement would have been affected.)
So there was no way to cheat it, you cant machine the carrier down, the frames not thick enough to grind a bit out, so the only option was to do the frame mod. What it does mean though is that the wheel, and sprocket carrier assembly etc are stock .

Hope that helps a bit ;)

[Gix11]

Yea mate, Ben did the exact same mod to my frame, that's why I recognised what you had done, but just wanted to confirm it was for that reason.

[slingy88]

Yea mate, Ben did the exact same mod to my frame, that's why I recognised what you had done, but just wanted to confirm it was for that reason.

Any chance of a couple of close up shots of your frame to compare how a pro has done it?

[slingy88]

heres a quick Video of the first time the bike fired up on microsquirt, just on a map i guessed at on the kitchen table. ;)


http://www.youtube.com/watch?v=qFEljde4e3Q

[Gix11]

Any chance of a couple of close up shots of your frame to compare how a pro has done it?

We'll have to hope Ben sees this post as he still has the bike and the photos currently.

[Fight_fan]

Thats awesome as fuck! Nice work mate!

[Slain]

Mate that is unreal!! so glad you left the 750 motor in and kept the stock look. You should be stoked with you work.

[slingy88]

Thats awesome as fuck! Nice work mate!

Cheers Mate, glad you like it

[slingy88]

Mate that is unreal!! so glad you left the 750 motor in and kept the stock look. You should be stoked with you work.

Cheers Slain, i have to say, i really like the look of the stock panels and the feel of being sat in it rather than up on it.

The panels are pretty rough and will need sorting out in the future though.

next job will be a quick action throttle mod and some tuning . Cant wait to get back on a Dyno to see how it compares to before :D

[evad]

How are you tuning? logging? have you seen this

http://www.tunerstudio.com/index.php/shadowloggerms

[slingy88]

How are you tuning? logging? have you seen this

http://www.tunerstudio.com/index.php/shadowloggerms

Hi Dave,

I do Datalog all my runs just for reference really but i actually use VE Analyze Live in Tunerstudio. It seems very good, works directly off your AF table and can be set to adjust the bins by varyng percentages so can start off with quite quick rough changes to the table then reduce the percentage change to ever refine it, as well as locking out areas of the table once your happy with them so it dosnt constantly try to change parts of the table that you are happy with etc. All good stuff. So i just ride with my laptop in my backpack and let it tune itself.

[slingy88]

How are you tuning? logging? have you seen this

http://www.tunerstudio.com/index.php/shadowloggerms

This looks good, i was reading on the MS forum about possible software or AP's for smart phones etc , didnt realize they were already available.

Cheers Slingy

[slingy88]

Just been back over the pictures and realised i didnt cover a couple of little issues that arise from this SSSA mod.

Firstly, due to the chain being 17mm offset some clearance issues with the sprocket cover were experianced.
I cut the back egde down flush with the cover which gives enough clearance on the top side of the chain, but the lower side of the cover steps in, so i cut it out and welded in a stepped out section to give clearance.

the cover after the mods.
http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/29082011162.jpg

and from the back showing the chain slots
http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/29082011163.jpg

fitted showing the chain clearance
http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/29082011168.jpg

and the lower run

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/29082011169.jpg

[slingy88]

Of course, that could all be avoided with an aftermarket cover but each to their own.

The other issue is that the left hand rearset is an interferance fit with the swingarm.
Now, i think all these SSSA ive seen use some spacers under the bolts to just space out the whole hanger.
I'm not a big fan of that, i think it looks a bit of an after thought plus you need to source longer bolts with the the correct metric fine threads , then lathe up the posts for the spacers etc so i came up with a simple option that just needs an angle grinder and the TIG and i think looks alot more factory..

So first i scored the rearsets with the grinder which allowed me to bend them easy to get clearance
http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/24082011150.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/24082011149.jpg

Then just welded it up, easy, job and done. oh also had to pack the gear linkage off the lever at the gearbox end
by about 10mm to clear the frame.
http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/29082011167.jpg

[slingy88]

I also managed to snap the screw that holds the resavoir pipe to the rear brake master cylinder and didnt want to buy a new one just yet so knocked up a small resavoir from a bit of left over fuel rail.

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/31082011171.jpg

I'm nearly finished the chain guard, so will post some piccys of that and the hopefull y some riding can resume.

[evad]

Hi jack,
yes I used a palm to log and then used a target asf table in megalog viewer.
Haven't used tuner studio yet but will be giving it a go on the gpz900 once I get my ass in gear and do some work on it!!
Your bike is coming on great

[Surt]

Of course, that could all be avoided with an aftermarket cover but each to their own.

The other issue is that the left hand rearset is an interferance fit with the swingarm.
Now, i think all these SSSA ive seen use some spacers under the bolts to just space out the whole hanger.
I'm not a big fan of that, i think it looks a bit of an after thought plus you need to source longer bolts with the the correct metric fine threads , then lathe up the posts for the spacers etc so i came up with a simple option that just needs an angle grinder and the TIG and i think looks alot more factory..


guess ur the only 1 on here slingin to factory look mate haha! but ur doin that well!

[Surt]

How are you tuning? logging? have you seen this

http://www.tunerstudio.com/index.php/shadowloggerms

hey evad thats great news! i was really waitin when its gunna happen/wasnt eager to go iphone lol

have u tried it urself already?

[slingy88]

Hi jack,
yes I used a palm to log and then used a target asf table in megalog viewer.
Haven't used tuner studio yet but will be giving it a go on the gpz900 once I get my ass in gear and do some work on it!!
Your bike is coming on great

Yeah,its getting there, just got to finnish this damn chain guard!! It must be 2 months know, just cant seem to find the time, or have some time and no motivation!! I have a few hours tomorrow so determined to get the bugger done.

GPZ900 on MS should be an interesting project, will be a good one to follow.

[slingy88]

guess ur the only 1 on here slingin to factory look mate haha! but ur doin that well!

Yeah probably not a very good choice of words. LOL. I'm happiest when the parts i've made either look really custom and trick or look like they were ment to be there from the factory. So i was happy that although not a trick set of custom rearsets, to most people they would never even twig that these rearsets have been mollested which in my book, especially for the ease of the job is a big bonus.

[slingy88]

Just want to throw this out there for some opinions.

Looking at this pic again, what would you guys do with the exhaust. I've decided i think to aim towards a retro K series look with a satin black frame and swingarm, blue and white paint but with the more wedgy patturns of the more modern bikes, and posssibly a k series radial caliper usd front end to match.
I like the body shape as it is and dont want to chane the seat unit so what idea's for the exhaust to show off the rear wheel a bit?

http://i557.photobucket.com/albums/ss11/slingy88/750%20slingshot/bike004.jpg

I' thinking either;
1. move the can up tight under the edge of the rear plastics.
2.shorten the can to just less than half and mount it under the reaset to keep the wheel clear.
3. get a GP style can and mount it under the rearset.
4. make an alloy can to sit inside lower fairing under the sump so no exhaust is visable.

Any ideas of what would be a good sloution would be greatly recieved. I deffinately dont want to change the rear plastics or move all the electrics in it to mount a can above the wheel either.

Cheers Guys

[BANDITROD]

I'd go with the custom under sump one mate I.e. Number 4 .....it would suit your build well ...looking good by BTW

[Bob]

Looks awsome mate. Top job.

[latheboy]

No. 4 ... or something that just sticks out under the RHS rearset...

[mr.zxr]

yep no.4 mate. i did the same when i had the fairings on and it made it look alot neater at the back end.

[Surt]

Yeah probably not a very good choice of words. LOL. I'm happiest when the parts i've made either look really custom and trick or look like they were ment to be there from the factory. So i was happy that although not a trick set of custom rearsets, to most people they would never even twig that these rearsets have been mollested which in my book, especially for the ease of the job is a big bonus.

deliberately mate but u got wat id meant keepin a factory look is much harder when massive mods r made, like stuffin v8 into ur r4 engined car's bonnet

[slingy88]

Yeah well, under the sump it will be. Cheers Guys, though this probably wont happen for a while but it just means i wont even bother messing with the carbon can thats on there. I'll just start start planing for under the sump.
Got access to guillatine and folder at work now so should be able to come up with something that looks pretty cool just incase i decide to de-cloke and go fighter.

[slingy88]

Ok, what with work winding down, been able to make more progress with the nwe exhaust than expected. This is where i'm up to know.

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/exhaust001.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/exhaust002.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/exhaust003.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/exhaust010.jpg

[slingy88]

It will fit down the right side of the sump and i'm going to fit a 63mm baffle in it so should be less restrictive than the old one.

Going to look pretty good i think, and should fit under the fairing still.

[Gix11]

That looks pretty trick mate. Be interesting to see it finished and fitted up.

[Deano]

Looking good mate. I run a 2" system from the turbo back and a straight through can with the ext gate exhausting into it. I got it tuned with the full road system on then for the last run took it off and ran a dump with screamer pipe and gained 1hp. So your exhaust might not be as restrictive as you think

[slingy88]

Looking good mate. I run a 2" system from the turbo back and a straight through can with the ext gate exhausting into it. I got it tuned with the full road system on then for the last run took it off and ran a dump with screamer pipe and gained 1hp. So your exhaust might not be as restrictive as you think

Cheers Deano, thats interesting. I cant decide whether to strip and use the baffle from the old pipe which is deffinately 2" or maybe 2 1/4" as its free and i have it or buy the baffle perforated 63mm baffle pipe which is like nearly $70 bucks on it own. Have to think it over a bit and measure it up abit and see.

[slingy88]

I have also got the chain guard functional, bit it didnt come out as neat as i wanted so may not keep it but will do for the moment so i can ride it anyway. still needs the corners rounding etc but gives you an idea as to what i was thinking

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/exhaust014.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/exhaust013.jpg

[DCRacing]

Thats looking great, it is giving me ideas...........

[Deano]

Just get some perf tube from the local muffler shop. That's all I used when I made my own system befor the one I have now

[slingy88]

done a bit of mocking up with the new end can.

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/kids031.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/kids028.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/kids029.jpg

And as i'm really broke at the mo just decided to use the baffle from my old can for this one.
was quite interesting actually as it reduces down to only about 44mm where it enters and leaves the can so not as good as i thought where as the baffle pipe is 58mm so will be fine in my new can.

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/kids024.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/kids025.jpg

[Surt]

looks bloody cool but why u made it so big slingy hangin to low me thinks aint u gunna stuff it with fiber shit?

[Harry]

Funny you should say that I'm fitting one at the moment

id like a squiz at that.....no lag when you drag !

[slingy88]

looks bloody cool but why u made it so big slingy hangin to low me thinks aint u gunna stuff it with fiber shit?

Its not that big in the flesh, i think it just looks big cause we aint use to seeing nothing bigger than a bit of pipe running past the engine. I purposely kept it so it would fit within the stock fairing so it dosnt hang down any lower than the front of the fairing does now, so it shouldnt cause clearance issues or anything.
And yes it will have a baffle and Fibre shit in when done :D

[Surt]

thats noice to hear mate i luv underslung cans either

[slingy88]

Right, so finished me underslung exhaust.

Had to make an adapter to make my 58mm baffle pipe fit the 63mm hole in the back of the can.
The only alloy i could find kicking around to make it was this great ugly slab, so 2 1/2 hours amd much swarf later i had my adapter.

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/pipe015.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/pipe019.jpg

So the complete set of parts looks as follows. Not much to it really ;)

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/pipe017.jpg

Assembled it together. Start with the bare can, then insert the adapter ring.

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/pipe020.jpg

Then the baffle. It pushes into the ring from the inside, and is held by the cut outs at the front of the can, then the steel plate end, when bolted on just clamps it all together.

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/pipe021.jpg

Then finally i compacted just over half a fibreglass roof bat into it before bolting it up.

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/pipe022.jpg

Then bolted it all up. I made a hanger which uses the old rear brake torque arm mount .

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/pipe011.jpg

And the finished product both plastics off and plastics on for comparison

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/pipe012.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/pipe014.jpg

[slingy88]

Really pleased with the look and is a fair bit raspier than it was, plus should be a little less restrictive, so pluss's all round :cool:

[Yella]

Fuck I like that good work

[slingy88]

Cheers Yella ;)

[K6Thou]

Shit dude you build shit I can only dream about. Well done.

[Deano]

looks good mate well done

[Surt]

looks cool mate

[Gix11]

I like it. Fresh idea like Ben's TL exhaust:

785

[slingy88]

Cheers guys, Not as pretty as Bens works of art but ok considering it didnt cost me a thing (except some gas and filler rod) :D

[slingy88]

G'day all,

Finally got around to taking my creation out for a bit of a run,(about 50min round trip) and all good so far :D
Nothing broke, fell off or caused me any drama's other than the Datalog software never captured the run, but the VE Anilyze Live worked well on the parts of the MAP i could get it into, and finally got up to 11000rpm (making 11.5psi boost) so getting near the red line of 12500. Really need a private runway or something to easily do this.
A couple of time's while backing off to 80kph, then dropping a few gears and nailing it, as it hit about 100kph it felt like i'd just revved it up and dumped the clutch from a standing start !!! Nearly pulled me arms out of my sockets :D:D:D:D:D:D ME LIKE BOOST:D:D:D:D:D:D
The MAP is still quite rich (most parts about 10.5-1 AFR) so still more to come. once i have it mapped a bit more, i'll re torque the head bolts and then ramp the boost up to 20psi. Probably need the intercooler back on for that but will log temps and see.
All good stuff. Just need some more runs on it now and abit more datalogging to lean it back a smidge.

Cheers all Slingy

[Surt]

shame on ya slingy no vids! thatd be helluva show mate and could be useful for urself in a case of some fuck up knock knock knock haha

[Yella]

Sweet keep the updates coming

[slingy88]

shame on ya slingy no vids! thatd be helluva show mate and could be useful for urself in a case of some fuck up knock knock knock haha
Yes, i know, i know. I need to sort some sort of camera out. I did make a tank mount for my old camera phone which has since shit itself so will have to try and sort out something else.

[BANDITROD]

that pipe looks shit hot mate well done

[slingy88]

Cheers Rod, glad you approve ;)

[Gix11]

Yes, i know, i know. I need to sort some sort of camera out. I did make a tank mount for my old camera phone which has since shit itself so will have to try and sort out something else.

Can't go past a Go Pro Camera mate! You can fit it to the bike and stand it by the side of the road for fly-bys. Check out Mono's advert at the top of the page (just wait for it to roll through all the adverts), he has a good price on them at the moment. Cheaper than anywhere I found online anyway.

[slingy88]

Shit, at this rate i'll have this biked tuned in time for my retirement LOL.

Anyway, took it out again today, MAN, evertime i take it it just gets better and better ;)
The auto tune works really well. I reckon anybike could be tuned in a weekend if you had like 2 8hrs days at it. I seem to be managing once a month at the moment, an hour a ride so thats 16 months to do what should be done in 2 bloody days. Oh well.
Todays new event is power wheelys in first just off the throttle as boost kicks in. First one court me abit by surprise but i was ready for the rest. Now this dosnt sound like much as most bikes will lift the front wheel off the throttle but this is a real mile stone for me. Especially as when N/A, i tried and tried and couldnt get it to lift the front end, not off the throttle, not off the clutch, nothing, so this to me means that i am moving in the right direction.Still on 10psi boost, and cause of the low comp and ultra short stroke, its becoming like a 2 stroke to ride. Open the throttle, wait for it, wait for it, revs building then BANG, theres your power.
Sorry, still no video, still skint as bag lady so will just have to imagine with me.


YAAAH for me. :D

[slingy88]

I have been hearing a bit of a metalic chinking sound on overrun and figured it would be the chain. Just looked and it is is chewing my sprocket cover as clearance is slim. Then, when playing with the chain, i noticed through the holes in the sprocket cover that the offset sprocket is all wobbling so nut must have come loose, which isnt surprising as its 17mm offset is probably putting alot of side load on nut and splines. I think an outrigger bearing might be on the cards. I had the sprocket made with a collar to take a bearing so shouldnt be a biggy to knock up something :)

[latheboy]

An out rigger bearing would be easy to set up, Boost is Rad i love that shit

[slingy88]

Yeah cant see it being a problem, the hardest bit will be finding the right size bearing i think. Thinking of drilling and tapping frame above and below swingarm pivot and making it to bolt to origional cover bolts but also to frame, then all tensional loads from chain will be taken directly by the frame at swing arm pivot, rather than just through rear engine mounts , then through frame to swingarm if you catch my drift.......

[Yella]

gotta love boost.
Its addictive

[slingy88]

Ok, one outigger plate.

Take one 200mmx200mm slab of 12mm alloy plate and drill through old cover as template to mark holes. Drill these to 6mm as we dont want heaps of slop on the holes, then drill back of plate half depth with 11mm to make sockets for dowls to go in.

Take some 14mm machine bar and turn one end down to 11mm to fit the pockets in plates then drill out to 6mm to take bolts to make the spacer bars. Only 3 of these are the same length and others are shorter.

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/bike013Medium.jpg

Note that the cover locating dowls are very thin because the hole is larger than 6mm so replictae some instainless with a 6mm hole to keep as strong as poss. the appropriate spacer bars are then drilled out on the engine end to recieve these new dowls.

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/bike017Medium.jpg

Then i bolted all the spacer bars to the engine, cut a card template to fit over the bars, then cut it to fit the frame and engine. Then, i fitted the bars to the plate, slid the template over the bars and marked the shape on to the plate and cut and shaped it with the trusty angle grinder/file/emery.

Then i bolted newly shaped plate to the engine with the spacer bars, zippy tied a 2mm drill bit into the grooves of the output shaft and turned it round to scribe a circle on the inside of the plate. I then used a set of calipers to find and mark the middle of the circle, this being the middle of the output shaft. I then used a 50mm carbide tipped hole saw to cut a hole through the plate. These are awesome and make a machined finnish to the hole at 50.2mm

Next i bolted the plate back on the motor and started making the bearing support out of a 100mm length of 80mm machine bar.

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/bike009Medium.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/bike010Medium.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/bike011Medium.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/bike012Medium.jpg

And how it looks so far.

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/bike019Medium.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/bike026Medium.jpg

Have to say, i'm very pleased with the outcome and just have to sort out extending the gear lever to clear the plate and jobs a goodun :D

[slingy88]

heres a few more piccy's i just found of making the bearing support.

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/bike003Medium.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/bike005Medium.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/bike006Medium.jpg

http://i557.photobucket.com/albums/ss11/slingy88/750 slingshot/bike008Medium.jpg

Parting off tool was never going ti make it all the way through so hacksaw it was :(

[Surt]

bloody awesome work mate!

[ozzy1100]

Fucking love it mate this is the type shit I live for top job
If u ever out ipswich way drop in and let me have a sqiz while
U droll over my cholcester lathe lol

[slingy88]

Cheers guys, glad you like it.

Would love to catch up Ozzy but i havnt even managed to meet Evad yet and he just lives up the road lol.

But yeah, will go to Ipswich at some point to get it Dyno'd on same dyno that did N/A run so will try and tee up then . Unless i can make it to a ride day or something .

Colchester smolchester...... Shun Shin, thats where its at lol.;)

Cheers Slingy