booster please read

[chicken]

hey booster,
thanks for offer to assist. this is my first turbo installation,any help i get would be greatly appreciated.just a few quick ones. assuming your gixxer was a 96, did you keep the carbys, or did you go with efi? whichever, did you have any dramas getting it tuned,if so any hints to make my conversion go possably smoother ? ive just completly stripped the bike down to its last bolt and have the engine set up on a stand ready to be blinged up, inside and out. question 2- what internal mods did you do( no matter how small), and anything you wouldve done different? at this stage im actually pretty excited, its effecting my sleep patterns cause i keep getting new ideas when i try to sleep lol. im gonna put some photos up real soon cause i know everyone prob thinks im full of shit and all talk, so pics will be up real soon. well any help at all will be awesome, thanks again mate and anyone else that can help.:D

[Booster]

Hey Boost
I initially tried the blowthru system but was frustrated by constant dissasembly of the carbs , didn't take long to fit later throttlebodies,make a new plenum ,mt4 microtech ecu,bosch fuel pump malpassi 1.2 reg,and that solved the prob.if you take this path i can send a screenshot of the fuel tables(microtech don't have transferrable files)
Engine started with std compression and water inj but i holed a piston at 10psi when the water ran out [B)], then put in a .035" spacer plate , this advances the cam timing slightly but i figured it would suit the turbo more and didn't try to readjust.
Clutch had extra diaphram spring fitted , this was very stiff and went back to a spacer preloading the std spring more .
Current owner has fitted a undertank air/air intercooler and ducted the ram air to make this work , he fitted the Busa swingarm and has now fitted a later 5 spring clutch hub and hat (minor mods needed in the clutch to make this work)

[chicken]

thanks booster,
i think im gonna go with efi, after hearing several people saying it makes life alot easier. im pulling the engine down soon for inspections and will rebuild with better components to suit the build. what parts did you have left over, like you were saying in your original msg?

[Booster]

http://www.streetfighters.com.au/forum/upload/9644973063300.jpg

And a set of 1k throttlebodies.with injectors.

[EXBEN]

Hey Boost Ive got an EFI setup off a 98 750 for sale for $500
If your interested. Just missing a cam sensor.

http://www.streetfighters.com.au/forum/upload/96449824130060.jpg

[chicken]

thanks guys,
how much did you want for your parts booster? thanks also for the offer ben, im thinking about it. would 1000cc efi be more benificial than the 750cc, due to more fuel capabilities? thanks.

[Stocky]

The 750 stuff is the same as the 1000 stuff (up to K5/6)

You are mad if you don't grab that stuff from Ben mate.

[Booster]

The 750 injectors changed in 2000 or 01 but all were at least big enough to support 180 or so hp at std pressures and more with a rising rate reg.
my old 750 is running std injectors , 1.2:1 reg and pushing 14psi (around double std hp.)

[Stocky]

Sorry, I did mean that they were 42mm like the 1000

[Booster]

Stocky you would be more familiar with the gsxr's ,all i have some experiance with is the injectors, which after the change were the same as busa's for a while (i thing till the twin injector system came along) and a busa will support ~ 190hp before having trouble with supply .
BTW the Airbox pan turned up from that link i sent you ,i'm going to try it on my NA 96 and see if i can get it going with carbs.

[chicken]

hey, im gonna get the efi setup off ben, gerard i might try to rope you in and help me fit it all up if your keen. if just finished making a mounting bracket for the turbo, 5mm thick, so it wont break, haha. i ordered a secont frame cause mine was damaged in the front, so i stripped the bike down, engine on stand about to pull it down, and when the second frame turned up it was twice as bad as my first, so to get the frame straightened on my original, ive gotta put it all back together again. fun times. i will have a swingarm in good condition left over if anyone wants it.

[chicken]

exben, that cam sensor that is missing, fo you know if it is expensive? thanks mate.

[EXBEN]

nah you'll be able to pick one up at a wreckers cheep cheep ;)

[Stocky]

No worries , I can give you a hand to fit it.


The injectors all fit K1-6 (even the dual ones use the same injector up to K7) and the Busa ones are the same too.
They do change from pintle to multi hole in newer models.

You might want to grab a cam cover from a newer model if you find one too. It'll have the cam sensor mount in it. Might have to add the pin to the cam too.

Nothing too hard, just details.

The hassle of fitting the EFI will be less than the hassle of tunning carbs.

What are you going to do for fuel on boost ?

I might even have a cam sensor, I'll have a look.


Booster -
I'm going to need some pics of that setup. I can send you some of mine and a few tips on sealing it etc.
Also a custom air filter.

[Booster]

I'll send some pics Gerard,Tips on fitting would be handy,;)
this has foam to make a filter, figured i'd treat it a bit like the ZX Kaw filters and slab it between the tank and tray dropping at the front to get the air entering the right side of the filter.
Looking at putting the 750 into the workshop for a checkup, it been rattling a bit when flogged hard and i know the rods are a weak point in these when there screaming all day long.
And i have a 790 kit with balanced crank and fresh rods under my bench that needs fitting.and a 600 inlet cam for the exhaust.

Boost , as Gerard said, you need to decide how you will make the fuel system boost responsive , it can be as simple as a powercommander reading a map sensor instead of the throttle position sensor .

[Nick1182]

Hey booster, I'm doing most of the fab work on Boost's bike.
Firstly how critical are the intake runner lengths/ volumes and plenum chamber volume.
I've done a bit of research and what I found suggests the plenum has to equal the displacement of the engine, is this only as a minimum because it will mean the chamber be about 15mm thick which is clearly wrong. The intake runner length is a complex calculation to make allowance for percussion wave travel but the volume equals cylinder displacement.
At the end of the day will it make a lick of difference for application that won't really be raced?
Is it worth running a 5th injector on boost into the plenum and is this easily controlled? if this is a feasible option would the injector be the same size as the 4 mains?

[Booster]

This is one of my first, it works well but not alloy or pretty
$50 and it can save lots of work.
http://www.streetfighters.com.au/forum/upload/30537215067183.jpg

This is on a landspeed bike,so far 310 hp at 8500rpm 12psi, engine manager sync probs wouldn't let it rev
http://www.streetfighters.com.au/forum/upload/30537215063199.jpg

this is on a streetbike,
http://www.streetfighters.com.au/forum/upload/30537215062579.jpg

Should give you an idea of sizes , i use split 60mm tube for the rear wall and sometimes the sides, lots of kits use 50mm

[chicken]

i have posted my pics on a new topic!

[EXBEN]

quote:Stocky Posted - 21 Aug 2007 : 17:54:49 You might want to grab a cam cover from a newer model if you find one too. It'll have the cam sensor mount in it. Might have to add the pin to the cam too.

He's getting a cam cover & exhaust cam with the efi setup from me, Im just missing the sensor.

[EXBEN]

quote:Nick1182 Posted - 21 Aug 2007 : 18:58:06
--------------------------------------------------------------------------------
Hey booster, I'm doing most of the fab work on Boost's bike.
Firstly how critical are the intake runner lengths/ volumes and plenum chamber volume.
I've done a bit of research and what I found suggests the plenum has to equal the displacement of the engine, is this only as a minimum because it will mean the chamber be about 15mm thick which is clearly wrong. The intake runner length is a complex calculation to make allowance for percussion wave travel but the volume equals cylinder displacement.
At the end of the day will it make a lick of difference for application that won't really be raced?
Is it worth running a 5th injector on boost into the plenum and is this easily controlled? if this is a feasible option would the injector be the same size as the 4 mains?
You can see from boosters pics that you can get away with pretty much any size plenum on a street bike but stick to about 1/3 - 1/2 of the standard airbox size ( this is a rough guide ) try to belmouth the inlets to the throtle bodies like he has done. On a streetbike you won't notice the diference of tuned runner lengths etc because it'll make so much power you'll shit yourself anyway ( assuming you haven't ridden a turbo bike before)