16/20

[dehney]

hey all

ok i know some people say too change the pistons in a 20v block too run the 16v head but has anyone on this forum done the conversion with out changing the pistons ?
if yes what hg did you use eg normal or the likes of a trd 0.8 or 0.5.

cheers

[Sam-Q]

I have heard of it in a budget build, the head volumes are very similar

[mikeyee]

few friends have done the swap, it works. theoretically, the piston is prone to hot spots and stuff (pinging/detonantion). and they combatted that with higher flowing 7mgte injectors.

theyve been putting around for past few years as well. should be cool.

[trikzlane]

speak the blair on this site, he has done it

[slydar]

plenty of ppl have done it, and, just from looking, it should be fine. the "dome" on a 101 st 20v piston is about the same as a small port. obviously fly cuts are different on the intake side but it will work for sure unless something goes wrong.

you can buy a small port pistons and ring set new non oem for like $200 and even less.

[Sam-Q]

I completely agree with the above, I just fail to see the point. Get a thinner gasket or shave the head if you want more compression.

[mikeyee]

^^exactly

it's just a compression bump. you can get similar results with thin HG, shaved head/block.

i wouldnt do it unless i happened to have a 20v block kicking around, or got it for cheap to save the effort/$$ on getting another block to similar spec.

[dehney]

well thats why i asked i got a st 20v block just chilling at home and a small port head so was just gonna run the set up as my bigport shit it self.
cheers for all the feed back guys