hey, im looking for cheaper ways to bump up my compression without buying $500 forged pistons, i have a B18b, i want around 11.1 comp. will b16 pistons give me that, or should i go with itr? i know with the itr pistons i have to get a machine shop make em fit, but will the b16 fit no prob, or will i have to do the same as the itr's to make em fit? im also planning on revin up to 8k while still making power up to there. how nessesary is it to get forgen rods and pistons? im getting the Z10 block girdle , arp rod & head bolts, would shot peening my stock ls rods w/ b16-itr pistons do the trick? or is it nessary to get forged peices to take the abuse, im going all motor, and i already have dual valve springs and titanum retainers to pair with my crower 404's. TIA for any input.

another thought, will i have problems with my valve clearance with my 404's and high comp. pistons? or will i be good? thanks


[Modified by One8Hatch, 5:30 AM 10/8/2001]

 

Best pistons on the earth - JE. I recommend getting a set, go with there rods and rings. Since you're in there, might as well go with a high compression head gasket. You should be at 11:01.5+ compression! I believe the set is around $300.

 

$300 for the pistons, rods and headgasket? or whats included in a set? thanks
oh and really my question was about would spending money on forged internals my absouletly nessary to rev up to 8k in my ls? thanks

 

that would probably be for pistons only and i've never seen je's that cheap i know u could get a set of srp's for 350 (srp is made by je), i probably would build the bottom if ur gonna rev to 8000 all the time. a cheap way to raise your c/r would be to get the head milled but that can lead to other probs later, cam timing will be slightly off and i would be worried if u ever decided to put some high c/r pistons in a motor with a milled head. valve to piston clearances could be very close depending on how much u have the head milled. another way u could raise ur c/r would be a thinner head gasket. just save up for a set of pistons and have your stock rods shot peened and polished.

 

I don't think the B16 pistons will give you the valve clearance you need. You gotta check that.

especially with a high compression head gasket or any aftermarket cams.

 

how would i go about finding out if the b16 pistons will give me enough clearance? is there a formula? thanks

 

Yeah, I ment pistons, my bad. You said you already had rods?

 

Sorry, I'm a little out of it today for some reason. The B16A valve heads have a larger diameter than the B18B. So the B16A valves may not have the valve relief dishes big enough. You can just hold the valve to the top of the piston to figure it out.

 

so i can just check if the b16 piston will have enough valve clearance if i just put the ls valve in teh piston's valve relif? im not really educated on how the valves open, i know the cam pushes em down, but when you get a bigger cam, does it push it down farther? or is it just hold them open longer? i want the b16 pistons becuase my friend has his stock ones, and he's just giving it to me, what a firend huh. but if my valves would hit my pistons i'll just save up for some forged pistons, how much do the edyne roller waves go for? they'd be able to make a bigger valve relif for me right? hope i can find some one who has 404s and using b16 pistons,thanks

 

Oh man, I was totally thinking you were going to use LS pistons on a B16A for some reason. Sorry bout that.

B16A valve relief on pistons will be big enough for the LS valves. No problem.

Yeah, as far as the cams, They change many things about the valve characteristics...A couple of which, that are most talked about are Lift and Duration. Lift is how far it opens the valve. Duration, is how long it keeps the valve open (roughly).

 

alright just to make sure, i can use usdm b16 pistons in my b18b motor w/ 404's without my valves smashing into my pistons? i notice your in Wa too, do you know of a shop that can balance my internals, hone my block and re thread my timming belt tensioner hole in my block.? thank man

 

yeah, you'll be fine.

I also noticed you posted on c-speedracing..

I'm not too sure where to take your engine. Not in Washington anyways. Ask on C-speed, they might know.

 

thanks