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View Full Version : comatabillity of 1st gen 4g64 to 2nd gen 4g64 pistons



97dsmturbogalant
05-21-2010, 06:52 PM
I am selling my new galant gs pistons that Iv'e had forever and am wondering the interchange compatabillity of the 1st gen 4g64('94-'98 galants - 99 spyder 4g64 eclipse) to the 2nd gen 4g64(evo orientation) motors. The pistons are for a 1994-'95 gs galant(10:1 comp. ratio) on '99 spyder eclipse rods. Will they fit in the 2003 4g64's without minimal customizing? Thanks.

mysticj
05-22-2010, 11:39 AM
Yes, they will fit just your intake valve relief will be on the exhaust side and vice versa.

97dsmturbogalant
05-22-2010, 01:09 PM
So they wouldn't slap the intake valves even though the reliefs are on the exaust side?

mko
05-23-2010, 08:18 PM
on theory they should work, i dont think its been tested yet

97dsmturbogalant
05-24-2010, 01:30 AM
ok, I'll let the guy know that they should work, but there is no guarantees. he should turn the motor over by hand and see if there feels like there is anybindage. thanks guys.

Joel91GS
08-22-2010, 12:44 AM
Hey bud are you talking about the 10:1 pistons for 94 GS? Do you still have them?

troubled4g64t
08-22-2010, 08:38 AM
why would the intake relief be on the exhaust side the manifolds are in different positions that tb just faces on the other side so the valve pockets should line up just fine

97dsmturbogalant
08-27-2010, 03:05 AM
Sorry for taking so long....sold the pistons and he used them just fine.