Redline of 750?? What is it??

[burke]

Hi I have a 93 750 Kat motor in my 93 600 kat frame and I was wondering what the redline on the new motor is??
The old motor was 12k.
Also there is not a revlimiter correct. I dont see how it would work unless it cut fuel.
Thanks!

[BarMatt80]

12,500 rpm redline on my '92 750. but their isn't a fuel cut, i think the cdi cuts spark to the center two cylinders.

i thnik rev limiter is 500-1000 rpm past redline or some do it before redline.

[burke]

cool
thanks!!!

[TheKlic]

on that note, any way to remove the rev limiter?
I'm hitting mine all the time, it's at 11,500 and I want to go further

[thecynic]

on that note, any way to remove the rev limiter?
I'm hitting mine all the time, it's at 11,500 and I want to go further

It's there for a reason. I wouldn't recommend altering it.

[The CyberPoet]

To remove the rev-limiter, you'd have to change out the controller circuitry and replace it with something that puts out the same spark power and response time (based on input from the timing signal generator). That can get quite expensive... And thecynic is right -- that limit is there for a reason (several reasons), the primary one being that is the point the engine is designed not to have any of the components fail based on the power output and speed of the (primarily) reciprocating & (to a lesser degree) revolving components. There's probably a safety margin of 20% involved, but that also takes into consideration possible worst-case tolerances and minor (insignificant) manufacturing defects that may become significant if pushed that extra 20%.
The spring weight and strength for the valve springs are also critical -- if you expect to get another 1000 or more RPM out of the engine, you will probably have to change valve springs to ensure you don't get any valve float at the higher RPM's (not that it really matters -- the engine's cams produce significantly less power beyond torque peak and it's a decreasing return as the RPM's go further past it -- you'd be better off sprocketing for higher top-speeds if you want "faster" at the top-end).

Cheers,
=-= The CyberPoet

[WildKat]

IMO, unless you're making a track bike...there's really no reason to remove it. As others mentioned its there to help protect your engine. Ive hit the rev limiter on my Kat on more than 1 occasion. I know where it is on my bike, but when Im riding hard Ive hit it already. Its a friendly reminder for me to slow my a$$ down

[TheKlic]

in other words, WAY more trouble than it's worth