how to hit 8000rpm?

[rudy_kid]

any suggestions?

how about 9000rpm?

i have a 90 gts
im getting my engine rebuilt right now
so yeah ill have a GOOD base

[Ghostyman]

Drop it from 4th into 2nd at redline? What are you asking here and what do you mean by rebuilt?

[big_daddy234]

more lift and duration on the cam , get your head ported and bump the compression up , ask your machinest for more details.

[Evo_lucian]

why do you wanna hit 9000 rpm ?

[rudy_kid]

i should have worded it better
i meant to say is more like how can i increase my rev limit to 8krpm

the 9k was just curiosity but im serious about hitting 8k
would it be very difficult?
i heard that a lightweight pulleys and flywheel can help

[MR2Jedi]

If you want to rev above redline, you will need to upgrade your valve train with stiffer valve springs to avoid valve float. Lighter lifters would help too.

[canadianae92]

you need a way of raising your limiter to 8000 rpm if you want that
you need fuel and spark control + valve springs for 9000rpm
but for more power and longevity at 9000rpm range you need other modifications

[SCT]

... why the want to hit 8k/9k+ RPM?

[Flashmn]

ou will need to upgrade your valve train with stiffer valve springs to avoid valve float.

And stiffer valve springs will cause other problems, like the wear of cam lobes for one, If you want to rev to 8k, get a motorcycle.

[Frozentide]

I'm with most of the ppl who have responded: WHY DO YOU WANT TO REV YOUR RPM'S THAT HIGH??

It won't make more power.... if you think that you haven't seen a dyno chart, and don't know what a torque curve is. Also horsepower as a measurement really doesnt mean much at all. Torque is all that matters, horsepower is just a way of showing torque multiplied by time.

MEANING: If you have 2 identical engines in 2 identical cars:

Engine A: max power is rated at 120hp @ 7000rpm and 100ftlbs @ 5000 rpm
Engine B: max power is rated at 150hp @ 8500rpm and 100ftlbs @ 5000 rpm

Which is more powerful and therefore faster?

Answer: THEY ARE THE SAME!!! The only difference is that if you ride the rpms to the limit you can shift later and might gain an advantage because when you shift, you will be at a higher rpm for next gear, however if your torque curve drops significantly between 6500-8000rpm then you are no longer taking advantage of the accelleration (which is usually the case).

There is a reason that people install shift lights, because you want to have them flash when you have reached the optimum power vs rpm spot to shift.

I hope this helps...

[Createdtoburn]

Rev too high make engine go boom

[eage8]

You could swap in a Blacktop 20V

also, look at this site: http://www.billzilla.org/4agmods.htm

Originally Posted by Flashmn

And stiffer valve springs will cause other problems, like the wear of cam lobes for one, If you want to rev to 8k, get a motorcycle.

My Corolla and my RX-7 rev higher than my motorcycle does lol

[toyotaspeed90]

stock 4age can easily handle 8500, actually so an 8k rev limit isn't all that high.

the better question is if you're getting a stock rebuild and stock cams, why would you want to go higher? Your power band will fall off drastically before you hit 8,000 rpm's (I have mine set at 7800 and I can feel it fall out of breath) due to limitations of the stock cam.

If you came in and said you were upgrading your valvetrain then I might tell you how to actually change the stock ecu's rev limit. Not many know how to do it -- including most "tuning" shops.

[SuLLiVaN88]

hell if you want to rev so high why not put in a rotary motor! but other than that these cars have a dam impressive rev limit stock

[j2b4osan]

Buy a civic with a b16......