Is there any way you can make your Prelude rev higher than it all ready does? Like, right now the peak power is at about 7200rpm, is there anyway to make it rev higher, like the S2000, at about 8-9000rpm? I will eventually have to rebuild my engine anyways, for a higher shot of nitrous, and would like to be able to rev up to about 9, but 8 would be good to. Just curious.

 

I did mention that a rebuild was going to happen, that why I asked, cause if I were to spend that much money into rebuilding, it would be nice to gain some revablility. How does the S2000 rev so high? 9000 would be red line, but if it was going to be more money than its worth, I probably woulnt even consider. I know I can rev to about 8000 on the tach right now, which is about 7500 on the engine. Being able to rev to 9000 would be nice for races.

 

.. a few things come to mind:
Rod ratio [what are you going to do to make it better]
ECU
Single Runner Manifold
Destroke
Oil Pump Gear
So, get the crank rods and pistons out of a F20B, destorke your H22 to 2.0 liters, get a reprogrammed ECU, Prodrive Oil Pump Gear, ATR Intake manifold or Euro Accord Type R intake manifold, and go to work.
But, why not just buy an s2000, if you really just have to rev the **** out of everything you drive, get something that was purpose built to be high-strung, like and s2000, ITR, hell even a sportbike.

 

OK, so its not going to happen. I do like the idea of reving extremely high, but oh well. I wont buy an S2000 cause I think they are ugly. It looks like rip off of the Porshe, but thats just my opnion. I would rather have a Prelude any day, plus, with the money you would save, you could have your Prelude running 12's. Not a big deal, thanks for the input.

 

if you have the money then you could put a type R ECU but then you have to build your motor but then you will be at 8500 to 9000

 

With the complete rebuild you should be able to rev the hell out of it anyway. Look into the JUN kit.

 

Now thats what I like to here. Where can I get info on the JUN kit?

 

http://www.junusa.com

 

link doesnt work, or is it just down?

 

Sorry. http://www.junauto.co.jp/index-e.html

 

Its cool, thanks for the info. When you say rev the crap out of it, did you mean higher, or just more often?

 

Both. you'll need to go with a full head rebuild to do it. JG will have more insight than I do on this one.

 

I noticed that JUN doesnt make a kit for the H22, but does make the pistons and rods. Are these the best pistons and rods the rods on the market? I know JE makes some high quality pistons, and crower rods and cam. But there are alot of products I didnt know about. Anything anyone would like to share that would help shed some info on the topic would be greatly appreciated.

 

if u really wanna rev..sell that engine and get an F20B2 2.0l

mugen did some research for race engines with thoose before they dropped them cause of the new K20 egines.. ( is ti K20 the RSX engine ? ) neway

 

One thing you could consider if you really have your mind set on a high reving H22. Have a custom set of pistons made which would normally lower your compression ratio to around 7:1, and relocate the wristpin higher within the piston. Then compensate for the lowered compression ratio and lowered wristpin placement by installing slightly longer rods, effectively increasing the rod ratio from a paltry 1.58 to a more revhappy 1.64. Or by using offset aluminum buttons to control the oil ring on the piston, you could have at least a 10mm longer rod. That alone would increase the rod rato to 1.69. Installing a set of longer rods will increase the dwell time at TDC and BDC, allowing the engine to fill the cylinders with air more effectively at high RPMs while also reducing the side-to-side movement of the piston caused by the crankshaft shifting the rod from side to side while the crankshaft is rotating. In the longrun it would promote more "even" cylinder wear, reducing the common eggshaping of cylinder bores related to excessive engine wear.

 

JUN does make cams for the H22. They make stage 1 and stage 2 cams, I just looked at them.

 

I have seen my car take it to 9k on the tach, but I think that maybe the previous owner disabled or removed the rev limiter?? I have no clue, but I do know I've maxed out my tach--not a good thing though, it was actually an accidental mis-shift. Just my experience with high revs...

 

hm... do you have any other mods done to your car by previous owner?
if not, then it's very unlikely that someone would just "remove the rev-limiter".
that can only do harm to the engine. if the rev-limiter is still functional, i doubt you revved even over 8k.

 

If you over-revved the engine due to a mis-shift that has nothing to do with the car being able to push the engine to that RPM. It's just the speed of the car being put through the lower gear that spins the engine that fast. I'm sure that it didn't accelerate or hold that speed since the fuel cut off would have been operating then.

 

I just saw it on the website, but do you think it will be as good as the Crower VTEC cam for the H22? Also, for the headwork, would I have to send it off to get it done? From what I have read so far, teh headwork is what will make the engine rev higher, along with the stronger rods, pistons, and crank if needed.

 

you'll need dyno charts to see which cams will be better. A Machine shop would have to do the headwork for you.

 

Yea, I will go with whatever products are the best for the money. What the headwork gonna run me? Probably 1000 or so if I had to guess. Just curious, is there any reason you have been looking into JUN products?

 

I've been looking at JUN because most people don't have it and it's a well respected company. I haven't decided what cams I'll get because they are along way off from going into my car.

 

Yea, I have a long wait ahead of me to, but I do believe its never to early to start researching. I know I am going to do some bolt ons and a NOS kit this year, once I have most everything I can do before the rebuild, I will start to purchase the rebuild equip, once I have everything together, then I get to rebuild my egnine.

 

WHY make power at 9k, when u can be just as fast at 7600rpm
TYPE S cams

just works wonders!