24 psi on a stock motor even w/ the greatest tune out there will blow in a matter of time. His is obviously built for that amount of power. The rings are usually the first things to go on the H22's and F23's when they're boosted. Usually followed by melted pistons or spun bearings.

 

FRM sleeves dont respond very well to the pistons expanding and will crack, massively modified i would hope means resleeve with cast iron. People will always argue which is better, a modified f23 or an h22, i bet on the f23 just cause it has a longer stroke, you can get an h22/23 head and build up on the f23 block and have a stronger running engine in the end. Haven a smaller pistons doesnt mean much just because you can do a resleeve and put larger pistons in. But any way you look at it, with enough time and money you can build a beast.

 

FRM sleeves don't respond well to the expanding of FORGED pistons, not the stock pistons. Your stock header is made of cast iron, aftermarket cylinder sleeves are usually forged iron for strength and durability.


If you guys are gonna reference the site I help mod, atleast join and introduce yourself. Don't just ***** out the info we've worked hard for.

 

its any piston expanding, forged pistons expand more then the stock pistons which are something that arent as easy to expand from heat. What are stock prelude pistons made of? that will be the biggest identifier of they expand as much as forged pistons

 

that'swhy i said that a H22 can actually be modified for gaining a hhuge amount of boost! no stock engine will get more that 5psi, mine (F23) was running dry so i had to buy a walbro fuel pump and fuel rail to intall the eclipse turbo 450cc injectors.... things haven't arrived yet but ill inform when im done....

 

Ok..so you reinforced what I said. Then I'm not quite sure what you're saying. The problem is the AL->AL contact of forged internals with the FRM liners.

 

i was adding that cause its not like only forged pistons would expand in a way that would damage frm sleeves

 

I guess you're not getting it, forged pistons will expand more than the stock H22 pistons. That's a fact, not my opinion. I've never once seen or heard of a case of stock H22 pistons expanding enough to ruin stockcylinder walls. There have however, been cases of too much side load of the piston on the cylinder wall and that does ruin the cylinder walls, but this goes for any piston.

 

I was looking to add a little power to my 96 accord 4 cly. A friend of mine told me to put a vtec head in there and I will get a few more hp's. Also do you think if i put a chip in it, i will get more hp???

 

*sighs* im talking about other pistons that dont come stock in a h22, this is just turning into a situation of youre either completely misinterpreting what im saying or you just dont care about what im saying. I never said that the stock pistons expand and ruin the engine for the h22 it would be stupid to even say that when theres prelude engines that have been running for over 200+k miles, before i asked what the stock pistons were made of to find out if they were a different material then say the stock pistons running in a f23/22 engine


rh honda,
rechipping a stock i4 hondas wouldnt be worth it because they are pretty much maxed out as they are, you may be able to get 5 to 10hp but i wouldnt bet on too much more then that. You would be spending a bit for just a little bit of gain.