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View Full Version : ZX7 - 9 Engine swap



Hagarr
14-02-2016, 09:47 AM
Have a '91 ZXR750 and engine may be a little tired.

Wondering what model ZX9 engines will fit without too many mods.

Yella
14-02-2016, 10:37 AM
B model 94-97
http://homepage.ntlworld.com/webzxr/zxr750r/Features/91zxr7-9.html

Hagarr
14-02-2016, 03:02 PM
B model 94-97
http://homepage.ntlworld.com/webzxr/zxr750r/Features/91zxr7-9.html

Thank you Yella!

Good to see it 's been done and all the niggles sorted, now to work out if worth it.

Yella
15-02-2016, 09:15 PM
I am looking at one little later this year have the motor ready to go and have a lead on a bike just need to get my ducks in a row

Hagarr
18-02-2016, 08:50 PM
I am looking at one little later this year have the motor ready to go and have a lead on a bike just need to get my ducks in a row

I bought the bike off Jason and didn't know much about it, but rode it cold turkey to P.I. and back, man it kicked my guts all the way but that's being sorted as we speak but Engine may be a little sad so just keeping the feelers out for an engine swap.

Handled like a dream but haven't had a small bore 750 for a number of years and forgot how much you need to rev 'em!

Yella
19-02-2016, 06:21 AM
Yep helps to keep the revs under them, 9 will give it some more pull or you can throw a turbo at it really brings them to life.

GammaBoy
19-02-2016, 09:06 PM
Wow that's a rough way of doing it. There used to be offset mount kits available for the zx7/9 conversions... NFI if they still exist

Yella
20-02-2016, 02:34 PM
The Kits are for the 9 into P model BG racing did them not sure if they still do, not needed for the earlier

Hagarr
20-02-2016, 07:43 PM
The Kits are for the 9 into P model BG racing did them not sure if they still do, not needed for the earlier

"P" Model?

Yella
20-02-2016, 09:13 PM
http://homepage.ntlworld.com/webzxr/zxr750r/History/History.html

1991-92 ZXR (J1, J2)
1993-95 ZXR (L1, L2, L3)
1996-end of production ZX7R (P1 - P7)

Hagarr
21-02-2016, 08:30 AM
Ta!