Higher Rpms? How Can I Do It?

[JDMK1DD]

i always wounderd how to get the rpms higher...
in a general sense... im aware of some of the head work but thats about it...
and what stock motor tach the highest for our cars?

[brutalcb7]

what are your goals? only to get to 12k, do you want to blow the motor? will your current motor even have any power at high rpms? what are you looking to do?

[IBCNYA]

better cam and valvetrain could help, but with the heavy slugs the f22 bottomend carries i wouldnt reccomend high rpm power without bottom end work.

[cloudasc]

better cam and valvetrain could help, but with the heavy slugs the f22 bottomend carries i wouldnt reccomend high rpm power without bottom end work.

The fact that our motors are stroked doesn't help the fact. From my understanding (feel free to correct me if i'm wrong) the closer the bore and stroke are to each other, the higher it can rev. If you had wet-sleeves installed in the block (and its a n/a build), you could use a bore up to 90mm (stock is 85mm).

Also the valvetrain specifically in the head would need to be upgraded to rev higher. Bisimoto's lvl 3 cam will have you spinning up to 9k rpm's to make power, so you better hope everything else can hold up.

[deevergote]

You would call those aluminum things heavy?


Still, yes... to raise your rev limit considerably, you'll need to do a LOT of work... forged internals, stiffer valvesprings, have everything properly balanced. You may even need to upgrade the oiling system at some point. High RPM is BRUTAL on an engine. A 500hp turbo F22A probably sees less abuse than a 300hp N/A F22A would.
It really depends what your goal would be.

Keep in mind that you won't be making power after a certain RPM. The stock F22A's power curve falls off very sharply around the redline, so taking that any higher would be quite worthless.

[IBCNYA]

You would call those aluminum things heavy?


.

Not neccesarly heavy, but larger than a higher revving B16/B18. Biggest problem with the B20vtecs are the larger pistons being over revved without any bottom end work. I was warned of this years ago by Howard of RLZ here in Concord many years ago. I know they are not physically heavy, by heavy i meant more mass and not made for a high revving application.

[Sordz]

you need is a chipped computer.

[deevergote]

That too, with a rev limiter removed (or at least raised.) Do that, and you can rev it as high as you want until it breaks!
But all the other things mentioned will keep it from breaking... hopefully.

[JDMK1DD]

TRUE...ok i see....
so i assume its only going to be more expensive cause im running jdm lude motor...
never attempted to tach it out..
but when it did run i didnt shift past 6
it was kind of pointless...
as far as the boost vs n/a, i never knew boost was less stress...

[Oreellyfool]

TRUE...ok i see....
so i assume its only going to be more expensive cause im running jdm lude motor...
never attempted to tach it out..
but when it did run i didnt shift past 6
it was kind of pointless...
as far as the boost vs n/a, i never knew boost was less stress...

JDM Lude motor... H22a? Vtec kicks in right around 6k.... if you wanted to rev it higher, you certainly can take it almost up to 9k.

[mtnbikaah]

Hold on.

You need to tell us exactly which motor you have.

[JDMK1DD]

F22B
No v

[GhostAccord]

That's basically an 85mm bore H23 if you want to compare specs. I'm pretty sure that won't make any power over 6,800 RPM without cams and supporting mods. If you want to rev it higher you will have to do pretty much the same mods as you would to an F22. The usual stuff cams, valve train, head and intake work, and maybe some higher comp pistons. And definitely an engine management system that can be tuned.

[Oreellyfool]

Or just buy an H22.....

[Jaysson_2012]

Or just buy an H22.....

^ That