Konstantin

and S2 Crankshaft.
anyone tried this.
This should be a chepaer way to turbocharge a 3 L engine. The2.7Lalready has the 104 mm bore. so the S2 pistons with the S2 crank should do the rest.
any pro or contra about this project.

Konstantin

nick_968

The s2 pistons are for use with the 16v head, so the compression ratio may not be correct with the 8v head, and what about the squish ? If you machine the correct dish into the pistons it should work no problem. I was going to use a 2.7 block for mine, until I opened it up and found heavy scoring on the cylinder walls.

fast951

Kons, This should bring the compession down for around 9:1CR. However the S2 piston does not have the appropriate shape for the 2.7L head.. Also, I'm not sure if the S2 piston is forged.. I have a set, I'll check it when i get a chance..

If you are going through the trouble of putting a 3.0L turbo together. Why not spend an extra $1200 and get the correct pistons???

Thom

Hallo Konstantin,

I think Sohnrey has done it. It doesn't seem to have blown ... yet

Tom Carson

we all know the original advertisements and magazine articles claimed the S2 had forged pistons as standard equipment...with this thread I hope someone will finally get the correct answer, whether the S2 pistons are forged or not ! Konstantin, I thought you had friends on the 'inside'

Konstantin

yes they say they are NOT forged.
I know of people who runs 1.3 aron S2 pistons.
so......you decide ;-)

Konstantin
PS btw thesame people say that the 951 pistons are not forged either???

Konstantin

who know for SURE what the volume in the S2 head is. what the volume in the 2./ L head, the dish volume in the S2 and the 2.7L pistons.?
I have these infos but I am not sure if tehy are right.
2.5L 951 head 60 ml
2.5L 951 piston dish 23 ml
2.7L head 64 ml
2.7L piston dish 4 ml
S2??

Konstantin