piston help Options

[trd94]

ok i have read that the 4age head gasket fits a 7afe so i would like to know if i use a set of 4agze pistons with a 2mm head gasket will i be ok for 10-12psi of boost or will the gze pistons raise the compression to much even with the 2mm steel gasket just need some input befor i buy parts i dont need thanks guys

[frotou]

Trd ; the most important thing you must specify with the CR on 7a is the head you want to use (7afe or 4age). Two completely different CR with the 4agze piston.

With 1st gen 4agze toy piston (8.0;1) + 4age head +7afe block+1mm gasket= approx. 8.5;1 to 8.7;1.

Just to clarify

Claude

This post has been edited by frotou: Feb 19, 2007 - 6:50 PM

[trd94]

Trd ; the most important thing you must specify with the CR on 7a is the head you want to use (7afe or 4age). Two completely different CR with the 4agze piston.

With 1st gen 4agze toy piston (8.0;1) + 4age head +7afe block+1mm gasket= approx. 8.5;1 to 8.7;1.

Just to clarify

Claude

i was thinking of trying the 4agze pistons (8:0:1) + 7afe head gasket with a 1mm ,or a 2mm head gasket , if the 1 mm head gasket with the head and piston set up raises the compression some that could be ok as long as it does not go way high 10:0:1 would be ok as i have seen some toyotas run that ratio and boost just not alot of boost , i have pushed my 7afte to 17psi abd the motor held up well but the tuning would not let me run that all the time so , the idea is to beef up the pistons a little get the compression around 10:x:1 and run a little less boost like around 10psi -12psi ,just to see what it will do i think i will try this setup on a differant 7a as mine is a very strong motor and if this does not work i can go back to my motor i have now i know some one with a motor that would let me have it for a real good deal so we will just try and see what happens. by the way what do you think the CR would be with the 7afe head and 4a pistons with a 1mm headgasket , or a 2mm headgasket just would like to know

[Negative]

i know some one with a motor that would let me have it for a real good deal so we will just try and see what happens. by the way what do you think the CR would be with the 7afe head and 4a pistons with a 1mm headgasket , or a 2mm headgasket just would like to know

Someone on a previous page offered to donate you a motor - so do it. This would benefit many ST owners to know one way or another.