zx 9/12r Motor
zx 9/12r Motor
Hey. Can anyone help me, I am looking to put a zx12r motor in a zx9r frame and I am wondering whether it is possible. Any comments or website links would be appreciated. Thanks.

- Smitty
- VIP MEMBER
- Posts: 10910
- Joined: Wed Apr 21, 2004 1:59 pm
- Bike: ZX12R
- State: Victoria
- Location: 3rd rock from the Sun
- Contact:
Gosling1 wrote:I think it would be a hell of an expensive transplant..........they are *totally* different design frames.......
good luck
ummm
Gos
lil' secret courtesy of the 'silver' book
I remember reading that.....
the 12's original frame design was done using a 9r engine
and the 12R engine started out on the drawing board
....as a bored out 9R

so maybe not so hard
GOTTA LUV the 12R!!
- 99coconuts
- KSRC Member
- Posts: 268
- Joined: Wed May 04, 2005 12:23 pm
- Location: Vic, Keysborough
NFI, but do let me know what you''re doing with the 9r motor if it ends up hapenning mate



racing hondas is like running in the special olympics
win or lose, you're still a honda rider...
99 ZX7R streetfighter
76 HJ Wagon kiddiekart
71 HQ coupe
http://www.99coconuts.com" target="_blank
jeebuz, 3 kids now.... anyone want one? free to a good home!
win or lose, you're still a honda rider...
99 ZX7R streetfighter
76 HJ Wagon kiddiekart
71 HQ coupe
http://www.99coconuts.com" target="_blank
jeebuz, 3 kids now.... anyone want one? free to a good home!
- Gosling1
- Team Donut
- Posts: 13823
- Joined: Mon Jun 20, 2005 9:30 pm
- Bike: Z900
- State: ACT
- Location: Anarchy Road
Smitty wrote:....Gos...lil' secret courtesy of the 'silver' book
I remember reading that.....the 12's original frame design was done using a 9r engine....and the 12R engine started out on the drawing board
....as a bored out 9Rso maybe not so hard
hmmm, maybe there *is* something in that.....see, thats what happens when you don't have the damn book !!!!


It would be a *hell* of a hybrid.......I don't think a stock 9R frame would cope with the HP of a 12, but of course you can always brace them.....
hmmmmmmm



".....shut the gate on this one Maxie......it's the ducks guts !!............."
- Smitty
- VIP MEMBER
- Posts: 10910
- Joined: Wed Apr 21, 2004 1:59 pm
- Bike: ZX12R
- State: Victoria
- Location: 3rd rock from the Sun
- Contact:
Gosling1 wrote:
It would be a *hell* of a hybrid.......I don't think a stock 9R frame would cope with the HP of a 12, but of course you can always brace them.....
hmmmmmmm![]()
![]()
as the book sez
soon as they stuck the proper 12r engine in the frame..blah
so
the 'trial' monocoque frame got re-done..to what we know today
is in the 12
GOTTA LUV the 12R!!
- Nanna10r
- Team Ninja
- Posts: 4291
- Joined: Wed Jul 14, 2004 10:42 pm
- Bike: ZX10R
- State: Queensland
- Location: Brisbane Australia
Top idea but .... dont you have to remove the tacho n the rear brake caliper (and everything plastic,metal,rubber & liquid inbetween) to change the spark plugs in the 12r now ?.
Cheers Brett
Cheers Brett
"Nan & Pop Racing"
Poppy Hops on .... CBR150 (Superlite) CBR954 "Blade"
Nanna Naps on .... MoriWAKI NSR85 (Motolite) ZX10R "Crim"
We may ride like Old Can'ts, But Phuk we look DOOG !!!!!!
Poppy Hops on .... CBR150 (Superlite) CBR954 "Blade"
Nanna Naps on .... MoriWAKI NSR85 (Motolite) ZX10R "Crim"
We may ride like Old Can'ts, But Phuk we look DOOG !!!!!!
-
- KSRC Regular
- Posts: 722
- Joined: Tue Jun 15, 2004 2:00 pm
- Bike: Suzuki
- State: Western Australia
- Location: melb, east bentleigh
- Contact:
-
- KSRC Contributor
- Posts: 1035
- Joined: Sun Jan 02, 2005 3:22 pm
- Bike: Suzuki
- State: New South Wales
- Location: Sydney (again...)
SocialSecurity wrote:yeah completely different frame design... 12R goes over the engine, 9R goes around the engine
The engines mount up the same way, though; top and bottom bolts across the back of the gearbox and a bolt on each side at the back of the head.
I sincerely doubt that a 12 head would fit between the 9 frame rails, though. The 12 is a significantly bigger engine.
-
- KSRC Regular
- Posts: 722
- Joined: Tue Jun 15, 2004 2:00 pm
- Bike: Suzuki
- State: Western Australia
- Location: melb, east bentleigh
- Contact:
-
- KSRC Contributor
- Posts: 1035
- Joined: Sun Jan 02, 2005 3:22 pm
- Bike: Suzuki
- State: New South Wales
- Location: Sydney (again...)
SocialSecurity wrote:yeah by that i meant "if the engine is too big to put a frame around,
It's not, though. The Busa and the ZZ-R11/1200 engines are both bigger than the ZX12 unit, yet they both run conventional dual-beam frames.
The ZX12 doesn't run that monocoque frame because the size of its engine made using a conventional wraparound dual-beam frame unfeasible.
- Strika
- VIP MEMBER
- Posts: 8373
- Joined: Tue Feb 01, 2005 8:02 am
- Bike: Yamaha
- State: Victoria
- Location: Melbourne
Gosling1 wrote:Smitty wrote:....Gos...lil' secret courtesy of the 'silver' book
I remember reading that.....the 12's original frame design was done using a 9r engine....and the 12R engine started out on the drawing board
....as a bored out 9Rso maybe not so hard
hmmm, maybe there *is* something in that.....see, thats what happens when you don't have the damn book !!!!![]()
![]()
It would be a *hell* of a hybrid.......I don't think a stock 9R frame would cope with the HP of a 12, but of course you can always brace them.....
hmmmmmmm![]()
![]()
And yourself I'd reckon!!!

"I hate to advocate drugs, alcohol, violence or insanity to anyone, but they've always worked for me" Hunter S. Thompson.
There are really only two questions in life. 1.Which way do i go? 2.What is the lap record?
There are really only two questions in life. 1.Which way do i go? 2.What is the lap record?
Thanks for the feedback
Thanks for the feedback. Has given me something to think about when it comes to attempting to transfer the motor into my frame.
