brett561tc

i was curious about raising the rev limiter after building the head. after reading through some posts, it seems to be a touchy subject. i know that a cars redline is largely based on piston speed due to length of stroke. our car has a 96mm stroke, and the rev limiter is set to 6400rpms. after doing some research i found that a k24 has a 99mm stroke, with a 7300rpm rev limit. now these are both the stock settings, and im sure that the k24 has a much better valvetrain. i geuss all im asking is, when i build my valvetrain, could i safely raise the rev limiter to 7500rpms. im sure there have been a few of us wondering the same thing, and the only real way to find out is to do it. but i just wanted to get some opinions first.

318_tC

i guess ill just have to find out and let ya know how it works out ;)

paul_dezod

The race team we work with is stock bottom end, N/A and revs their car with our valve springs, retainers and 1mm OB valves to 7300 RPMS.

borderguy881

iTrader: (-1)

the thing is....is it still making power all the way up there?

brett561tc

with my turbo it will be.

318_tC

Im not worried about that, but for brett's sake his dyno showed he had alot left in it!

paul_dezod

Race team does until 7K or so. ;)


No point in revving that high if ya don't make power there.

318_tC

60-1, or are you going with something bigger?

brett561tc

paul. what does the racecar top out at in 4th gear at 7300rpm?

brett561tc

60-1

318_tC

gotchya

paul_dezod

It makes REALLY good all motor power is all that I am at liberty to say.

brett561tc

the only reason i want to know is because i dont want to have to shift into 5th at the dragstrip. i'd like to stay in 4th for the fact that its the closest 1:1 gear ratio and pulls harder than 5th. the only problem is that im hitting the rev limiter in 4th @ 112mph before i hit the finish.

318_tC

go aem ems and upgrade ur valvetrain.....120+mph et's FTW

brett561tc

thats been the plan all along. i'm just curious what redline a 96mm stroke would limit us to.

318_tC

ennd of 4th is like 131 with a 7300redline

brett561tc

^id be happy with that

318_tC

blam! lets see it happen sir!

brett561tc

ok people. who wants to give me some free parts?

318_tC

psshhh J O B !