4G63 or 3SGTE pistons do not fit FE stroker!
I think I have been along perpetuating this myth. It was before I began to verify the validity of the information I'm given. Apologies.
They have compression height of 35mm, only 1mm less than stock piston; you need 4mm, or 32mm. SR20DET pistons are the only pistons useable, but only worth getting for cheap; the lack of valve pockets is quick to cause grief, and they have a bit too little dish volume for really high boost. Also, don't go past 86.5mm bore, 87 *will* crack under boost, this is proven by many, here and other forums. I bored mine to 86.5 and filled the block up to core plugs to be sure. Wall thickness really is an issue with FE DOHC.
4G63 or 3SGTE pistons won't destroy a regular 86mm stroke engine, but then you'd lose a lot of squish without extra thin gasket. SOHC rods on the other hand are 2mm taller than DOHC's, which would ram the pistons into the head. Using an extra thick gasket (~3mm!) would help but again that creates other problems.
1988 626 Wagon GT 2.0 DOHC Turbo | 1988 626 Hatch GT 2.0 DOHC | 1991 626 GLX Hatch AWD 2.2 l 1998 Volvo 940 STW Turbo Classic | 1988 626 Coupe GT 2.0 DOHC
My vBGarage My ride at CarDomain
Last edited by STW; 1-15-11 at 14:38.