What would Type S H22 pistons do for my jdm h22

[meyerracer]

I plan on staying n/a and i'm wondering if type s pistons would help me out. Are they bigger or smaller pistons? Just would like some info about them and the performance i might expect with them.

[Whyte7]

they would raise your compression by .5 i think (not positive on that number) i wouldn`t expect much added power from that.

[accordfreak]

stock ones 10.0:1

jdm 10.5:1

type S 11:1

for stock sleeves this is the ideal because of the nickazil any other custom forged pistons will eat the stock sleeves etc!

[BustedLX]

Actually the JDM H22A is 10.6:1 and the SiR Spec H22A is 11.1:1.

It would give you an additional 8-10 hp depending on tuning.

[Whyte7]

kool that is more than i thought they would do...hell i may have to do that

[BIGDOM]

please God,, does anybody know aftermarket high compression pistons that will work with the FRM sleeves???

[mrmike]

u'll have to sleeve

[2point6]

Originally posted by BIGDOM
please God,, does anybody know aftermarket high compression pistons that will work with the FRM sleeves???

Wiesco and JE both make a FRM compatible piston. They are custom... cost more, usually not a shelf item, and difficult to find. Make sure when you are ordering this type of piston, you are specific about having FRM sleeves. The FRM sleeve is not the same thing as Nicasil so don't confuse the two.

[BIGDOM]

are you 100% positive b/c i dont wanna buy a piston set, and fuck up my cylinders,,,

[mayberry]

not to sound like a kiss ass, but im pretty sure he knows what hes talking about.lol

[h22sparkle]

just make sure you get the standard sized 11-1 type s pistons and not the oversized unless your going to bore it out. is you want a bit more you can go with the type-s standardized pistons and a thinner headgasket.

[BIGDOM]

yea but if i got those wisco or JE pistons,, they would be higher compression that 11.1:1 right,,, and if they' re FRM comp..b/c if not ill just stick with the type s,,

[h22sparkle]

stick with type s if you dont plan to resleeve all you gotta do is rehone it unless your goin for something real big like 12:1 or worse 13:1 or something like that hope you can run that with some race gas cause i hear its not cheap and dont even think about runnin pumpgas. if your goals arent that high and you dont plan to resleeve the motor stick with the type-s. The headaches will be spared in the long run. all you gotta do is rehone and not even have to worry about pingin and you dont want that shit lemme tell ya lol

[BIGDOM]

i want no less than 235 hp at the wheels,, i cant get that with type s man,,, or can i,, all my setup that i got now is a skunk2 IM, and a hytech header on the way,, i want a complete jun head pkg, i dont think that and the type-s will get me what i want...and 2point6 said that wiesco and JE make aftermarket FRM compatable pistons,, why cant i just get those with like 12:1 CR

[h22sparkle]

Im sayin i would just resleeve to be on the safe side atleast it will be able to take more of a pounding i really dont trust having it said being frm unless its stock especially on a h22 motor. But also i trust 2point6's opinion on what to do being that he has the experience im not sure but i think he did resleeve his motor . I would do the same and the money he spent to get it crackin I would try to follow through the best that i can and make sure that it doesnt go to waste .


Resleeve it i know it may sound expensive but allmotor is no joke and neither is turbo. And last but not least your gonna be runnin 12:1 I hope you have someone whos gonna be tuning that motor well cause you cant run 12:1 on pumpgas and expect it to run right sometimes it will detonate and if its not workin right good luck and kiss your shit goodbye. You also may wanna change the autotensioner like i had done to mine just for good measure as a precaution.

[accordfreak]

Originally posted by BIGDOM
i want no less than 235 hp at the wheels,, i cant get that with type s man,,, or can i,, all my setup that i got now is a skunk2 IM, and a hytech header on the way,, i want a complete jun head pkg, i dont think that and the type-s will get me what i want...and 2point6 said that wiesco and JE make aftermarket FRM compatable pistons,, why cant i just get those with like 12:1 CR

with that setup im sure u r gonna reach the 230+ whp !!! i saw some stock short blocks with complete head works etc @ 230 ;)

[h22sparkle]

damn accordfreak i like your ride bro what kinda rims are those?

[Jay187]

so whats the deal with the autotensioner havin to go when u go all motor ? i noticed that 2point6 also ditched the auto tensioner any explanation would help i am trying to learn as much as i can about high horsepower setups for when i start my project

[h22sparkle]

Well the deal with that on the h22 motor theres an autotensioner. The autotensioner is a bolt like mechanism that is in between the belt on the motor which tightens the belt up to prevent it from being loose.

Cause if that belt gets loose it could jam and tear some shit up which you dont want or it may jump a couple of teeth on the timing belt which you dont want it can cause some of the exhaust valve to open or close up at the wrongtime in turn makin contact with the piston which will in turn tear more shit up which you dont want.


BUt the thing is want to make sure you throw on a h23 they have a manual tensioner which is somewhat ideal for the h22 because all you have to make sure its properly adjusted to prevent the autotensioner from goin out. Sometimes it will or may get old and go when it wants its just a matter of time when your makin a certain amount of power or mechanical failure its not important but id change if i were you which i did.

[Jay187]

ahhh i see so like most things automatic there not as good as there manual counter parts. so what happens with the auto is that is might fuck up and losen up when it shouldnt causing the timing belt to get lose and maybe break or do as u said witch would pretty much end up in having to get a new engine.


thankz guyz very minor but importain detail i would have never thought about.

i had been thinking of my final goal being a h22a trubo once its all done witch would take me forever because of money but seeing how much 2point6 got NA is really making me think about doing NA becuase i could not only learn more about the engine but it would be less matince and i wouldnt have to mess with things like A/C and what not even tho it will prob be the same or more then a turbo kit would cost.

[BIGDOM]

yup that happend 2 my buddy;s Lude,, outta nowhere just drivin,, bam, fucker died on us, left our ass stranded,, so best route finacially and horsepower wise would be 2 just get the type s,, cuz i wanna be faster,, and i love the sound of allmotor vtec,, but if i could throw in some wiscos or something a lil higher than type-s to make more power i would do that...

[h22sparkle]

If you do it right it wont cost that much in the end. But It will cost,but as far as it is imma tell it to you like this it will require maintenance reguardless you just have to catch the problem when it pops up on top of that once you start modding these engines reguradless theres no guarantee.

[h22sparkle]

yeah go without a cat but get a nice highflow resonator cause cops like to be dicks nowadays.