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1125

Posted: Mon Dec 06, 2010 4:08 pm
by big1
looking through old post has anyone finished an 1125 and got it up and running . if so has any got anymore information

Posted: Tue Dec 07, 2010 12:04 am
by sickle44
from my poking around, difficult to find parts for nowadays. There is allegedley even a larger kit available but suffers from the same. If you do manage to find them, they aren't cheap either.

As far as reliability goes, as long as compression is kept near stock or not much higher than, they can be a reliable motor. Seeking stratospheric compression rates is asking to rebuild bianually.

Posted: Tue Dec 07, 2010 12:43 am
by spook
So are we talking about stroked cranks?

Posted: Tue Dec 07, 2010 1:55 am
by FZRDude
One of our members, from Italy, has one if I remember correctly.

Posted: Tue Dec 07, 2010 2:01 am
by hotcam
Spook, do a google on superbikemike . He has big kits for the thou (1170?) that have a new block and pistons, offset to the outside to make more room for the big bore. Lovely but not cheap. Like, you could almost buy a zx14 ninja for the money, certainly a zx12. Still I gotta applaud his guts for making pistons that are offset to the conrod! Might want a stroked crank and some carillo rods to go with that I reckon.

Posted: Tue Dec 07, 2010 10:49 am
by big1
every time i try to get the link to superbike mike web site its a dead link

Posted: Tue Dec 07, 2010 7:44 pm
by spook
I'd love to see someone have a go, however it's not something I'm interested in personally. I think the 1040-70 is the best base for one of these engines from a power-reliability and $-power stand point.

Stroking is pretty easy to do in small amounts, just grind the big end bearing journal to a smaller diameter essentially moving it's centre point further to the outside, and increasing the stroke as a result. Downside is you weaken the crank, and need to find rods with a smaller big end to suit.

I guess you could easily have the bearings built up and re-ground to the outside, you would need to have the crank de-stressed or normalised some how, but it could be done :) Rod to case clearance may be an issue?

Keep us posted with your findings!

Posted: Tue Dec 07, 2010 8:05 pm
by spook
hotcam wrote:Spook, do a google on superbikemike
I just did Cam... ouch! he hasn't made many friends around the traps :roll:

Posted: Wed Dec 08, 2010 1:35 am
by sickle44
I think Ernest story to tell of SuperBikeMike I think, but I'm not sure if that's the dude or not? Ernest?

Not sure if you'd have to do all your talking about to stroke Spook. As I understand what Falicon does, they just reset the conrod journals further out from centre of their original position and make sure it's got same strenth to boot. Then a spacer has to built as obviously the old barrels will need to be longer in order to allow valve clearances.

I had thought about it but decided against it as I'm already well over budget with just my 1070 build and complexity, although the engine isn't the only thing being changed but I'll easily have well over 3K in just the engine alone and I was trying to keep it to 2K. Hell, I think injection alone will have me down for 1K+ by the time I'm done.

Re: 1125

Posted: Wed Dec 15, 2010 8:50 pm
by FZR1186
big1 wrote:looking through old post has anyone finished an 1125 and got it up and running . if so has any got anymore information

I have the 1186 kit in my 94. What info are you looking for?

Posted: Thu Dec 16, 2010 4:20 pm
by big1
whats been done to the motor,what carbs your running,what main jets are you using ,how many miles has it done whats horse power have you got cheers