Bone1

tap tap tap...........

thats rod stretch making the piston knock on the head, pray you never have carbon build up.

compressed HG = .035-.037"
piston = .018-.020" above deck.

You have .020" to play with.

NOT ENOUGH esp. with flimpsy OEM rods.

Minor Threat

Viagra pistons don't use stock rods though.

0b00st0

20 thou is plenty. Might get close if you are using aluminum rods.


Regardless, what does that have to do with the head being Y8 or Z6?

Bone1

Y8 = closed chamber, piston will hit the quench pads.

the rest = open chamber, room in the chamber for the piston

Know wadda mean there Vern?



TT rods stretch also......

bitchasscracker

i like streching my ball sack out and making it look like a heman schield

ifly87

I put my vitara's and stock z6 pistons next to each other, the vitara's didnt seem to have any thicker ringlands at all, I didnt mic it but they almolst looked thinner.

Bone1

look at the TOP ringland between the top compression ring and the piston top