I have a b20b with a gsr head ported and polished with skunk 2 valves. I'm trying to make a fast reliable all motor car. What pistons do you guys recommend and where can I get them. Also what ratio. THnx

 

How much do you want to spend and what type of racing are you trying to do?

 

I got 500 for pistons and I'm only gonna do a little racing here and their on weekends. Can I use stock rods?

 

With RS machine pistons yeah.

With forged pistons not so much. If you were using a aftermarket rod then wiseco, supertech, CP. Any of those would work well.

As for a cheap rod, I recommend scat rods. They are relatively cheap and require very little work to get balanced.

 

for rods.. i really like the carillo pro a

 

actually cant you just use the stock press wrist pin to put the piston on the rod. the piston is gonna slide back and forth on the pin no matter if its forged or cast. i still agree that if your gonna get forged pistons though the rods also.
also the forged rods will be better at keeping the big ends round than stock rods if the motors gonna see alot of high rpm,especially with the heavier 84mm pistons

 

Yeah, but $900+ may be a bit out of his price range.

 

So some rs machine pistons with scat rods. What compression is good for this set up? A friend of a friend works for arias and he said he could get me pistons and rods for 750. Is that a good deal?

 

thats a good deal,i just like the oem reliablility of cast pistons i guess. if your using stock sleeves your more likely to crack a sleeve than blow a ring land anyway even with cast pistons. quit a few people on here have used eagle/scat rods with rs/cast pistons

 

Where do I get the rs machine pistons and what compression. 11:5:1 or 12:1?

 

from RS machine as far as i know. Id look into the ITR pistons either USDM or JDM, cant remember if they sell both. The JDM will give you a little more compression

 

rs machine, last i checked, makes one dome in 84 and 84.5 that yeilds ~11.5:1 with a PR3 head, add 2 tenths to that for an unmilled P72.

thats the piston i would use if i were you, unless you want to drag the pockets out on a oem b20b piston and mill the **** out of your head.

 

Good infos right there

 

Thanks everybody for the good info.