jdm 1080p

alright so
http://www.ebay.com/itm/JDM-HONDA-PRELUDE-TYPE-S-PISTONS-ACCORD-H22A-H22A4-FREE-SHIP-/161091836213?pt=Motors_Car_Truck_Parts_Accessories&hash=item2581d25935&vxp=mtr
these pistons i been skeptical about these knowing ebay. has anyone bought these pistons for there h22 with frm!

im doing a oem h22 stroker with h23 crank n rods just want some oem type s pistons to finish the block, these seem good but??? EBAY!

will these work? has anyone used these?

TheJGB3

I would never buy aftermarket ebay crap.

I would buy JDM Type S OEM ones here (the last set in the US). They are for standard bore, the +.25MM OS is sold out. Wrist pins are included, but you will have to buy rings separately.

http://www.icbmotorsport.com/jdmprbb6tysp.html

According to Mike L, service manager at King Motorsports, these pistons will gain you 15-20WHP since they are 11.1:1 compression.

AznBlueBoy

A cold air intake will also give you 15-20whp.
Yeah right.
It will gain you 15-20whp with a good set of cams.

Mykizism

Buy them and try them out. Report Back your findings.

the171

Ive avoided these so far after reading stories of weak ring lands. Theyre probably Ok under 235whp.

1funryd

These are not an ebay brand, these are an aftermarkt brand from Japan, but I do a person who did his H23vtec build and he used NPR pistons and rings, and one of the pistons pretty much disintegrated in the block and cause massive damage on stock power.

This could have been a bad run, but the amount of damage done now requires a new block.

I will get those pics to show what happened.


Here I got them:











Just so we are clear, this was done on stock power, not a built motor.
And I am in no way bashing NPR's quality, just sharing a build result with what may be just a bad batch.
I was on the verge of getting this pistons for my H22 rebuild until seeing this.
So I am doing more research on what the better options for me are going to be.

I would talk to the dealer who is selling the pistons and ask about the warranty of the product and what they are willing to back.

jdm 1080p

holy crap maybe i should just buy the mahle pistons instead to make life easyer! because i know those work well

1funryd

Like I said this is only one experience and you should always ask the dealers on their warranties should something like this happen.

Do not take this as gospel, because this could have been a bad batch.

AznBlueBoy

Warranty doesn't do much.
The pistons are cheap but the damages it can cause is way more then the price of pistons. So if it destroys your entire motor which it probably won't, they will give you a new set of pistons if you can prove it was the pistons but you're **** outta luck on everything else.

slacker253

thanks for the painful reminder of the murder those pistons did to my engine 1funryd
hmotors online has oem type s pistons for pretty much the same price ebay sells those nippon ones. http://www.hmotorsonline.com/shop/sc...age&item=10021

AznBlueBoy

rings not included

1funryd

Sorry bro was just trying to report.

Sell the other rex and rebuild the H23vtec...

slacker253

thats ridiculous sell my other rex lol its my dd i can't just up and sell her. yes AznBlueBoy neither set of pistons from icb or hmotors come with piston rings. i believe the mahle gold series pistons for our engines come with rings but they are also roughly twice the price of oem type s pistons.

jdm 1080p

BEAST i just bought these and as for the rings i just bought oem rings from honda

slacker253

i hope everything works out the best for your build but like 1funryd was saying this may as well just been my bad luck or bad batch. as for nippon i did do alot of reading around and they have good reviews with there products and what not. as you stated you had purchased the oem honda rings maybe that is the combo you need for these pistons to work as for me i used the supplied npr rings that came with them. after she is all together and running please by all means report back with a successful setup i hope

1funryd

I am really hoping that a bad batch is all it was. Because for the price and value these are very good. For OEM replacements.

Rosko

iTrader: (1)

Out of curiosity was that setup tuned at all or just ran with the stock ecu?

slacker253

no this was not tuned yet. i was on my way to drop it off for dyno tuning car was running with a chipped p28 with an h22 base map.

Rosko

iTrader: (1)

So it could very well be an ignition/fueling problem then. Looks like plenty of fuel from the pics though but making a 10:1 to 11:1 jump is a pretty serious change compression wise, and you never really know what those "basemaps" consist of. They really should only be used to start the car and check for leaks, unless you know exactly where they came from and are using the same injectors/initial timing etc.

I'm not sticking up for the pistons and personally I wouldnt be interested in running them, but I dont think it would be fair to say they were faulty either. I know you arent neccesarily saying that, but for anyone reading this its good to know that there are a handful of other factors that could contribute to destruction like this.

slacker253

yes this could of very well just been bad ignition/fuel problem because of base map or what not. the car ran amazing for the very short life span it had but obviously something was wrong and went boom. just wish i could put my finger on the exact problem why it blew.