will forged pistons work with the stock bore with out being sleeved
i only had about 20,000 mile on the block so my block was bored over .0020 to give the pistons room to expand

 

this is asked atleast once every few days man. yes you do need to sleeve the block anytime your putting forged pistons in your h22a4

 

actually there is a way to put forged pistons in the h22a4 w/o getting sleeves. its a process that removes the nickel from the cylinder walls. the nickel is what causes the forged pistons (rings) from not properly sitting. it wont be as strong as sleeves and im not quite sure about the price. i have only talked to a few people that have done it. but it is posible.

 

Can you get more facts about this? I always thought FRM was the resason for not being able to run forged pistons in 97+ Preludes. Just how do you remove nickel from the cylinder walls?

 

There's no nickel on the cylinder walls. The cylinders use an FRM liner, not a nickasil coating. There's so many posts on this stuff, I hate to say it, but do a search.

 

i don't know too much about the process but i know people running forged pistons in stock sleeves and thats what they said it was... sorry ill try to do a little more research before posting next time.

 

But for how long...

Of the subject but how are you only at 240hp at 10 psi??? whats your setup?

 

UR pulleys, f-max kit, 8.5 lb flywheel, 3" exhuast (RPI muffler), no cat. and i think thats about it the dyno is posted at http://www.personal.psu.edu/users/w/...97prelude.html
I will have a new dyno in the spring with the NX N-ter cooler and maybe a new turbo.

 

*note to self*
"Don't get the fmax kit"

 

well if 248 hp is low for 10 lbs w/ a t3/t4b 60 trim .63 a/r what hp should i be at?

 

its time for you to get a bigger turbo cuz boostedh23a is making 250hp on 7 lbs on his h23 and your car has more hp stock plus your boosting more and making less power....It just doesn't add up

 

The 60 trim is a good size turbo. It big enough to make 400+whp. I don't think it's an issue with the turbo size.

edit: My bad, I thought it was a t3/t4e. You should get the .60 trim t3/t04e or the .57 trim t3/t04e.


[Modified by Anubyss, 5:18 PM 1/7/2003]

 

i think he should move up to a t3/t4e insted of his t3/t4b

 

I was thinking about going to the T3/t4e (ball bearing) this spring because its much more effiecent. what mods does Boostedh23a have?

 

What's wrong with FMAX? I have no problems with mine and I pushed 273hp with 232 ft lbs. of torque on 11 psi.

 

Quaalude is making about 258 WHP at 8 PSI (I think), but he's got an AEM EMS.

 

Yes you can run forged pistons. Here is how, go to swaintech.com, check out the PC-9 coating, it coats the piston skirts, allowing you to run forged pistons in FRM sleeves. You should at least get a block guard if your gonna run 10psi of boost, open deck isnt the best for boost. If your gonna spend the money though, Darton sleeves are about 600, so you would only be saving about $450. Is it worth the savings to risk week sleeves? I have decided to spend the extra money.

 

I wouldn't recommend the FMAX's additional injector method for anything over 9 PSI. You can get it to work, but you risk getting uneven fuel distribution.

IIRC Dirtylude was going to fabricate a special fuel rail that would hold 4 additional injectors and be run off the MF2 (MF2 can control up to 4 injectors), but that was before he went Haltech.

 

what is your setup (besides the f-max) H22Prelude??

 

the original post at the top is mine under mine friends name............
the machine shop doin the work warranties there work so its all good if it doesnt work right. im just **** out for a ride until they fix it . oh also i running high comp.
im not boosting. you guys went way off the subject.