How much power can stock (85mm) 4G63 pistons hold?
Whats the first thing to go once you pass that/typical problems?

What size is the wrist pin on the stock pistons?
What about compression height on the stock pistons?

Thanks.

 

Handle - 500+
Just like any other piston seeing alot of stress, ring landings fall apart
The 2g rods are only good to 400-450hp, 1g rods can handle 500+
Don't know if the wrist pins vary from 1g/2g, but I know you have to machine down a 1g rod to fit a 2g piston.
Not sure on the compression height, i know they are dish type with 4 valve reliefs ( as most 4 cyl. )

 

Oh and in a very high hp application, with arp studs and a really nice headgasket, you're more likely to snap a rod before you fry a piston.