S65 Bored Block 4.4-4.6L 94mm overbore

[RocketyMan]

Originally Posted by tdott

I think because that is how it comes back from the machine shop usually.
The engine builder would need to put it together, but doesn't look like it had made it that far yet.

So it's still available you're saying?

Sounds like this would need custom pistons? And this would be the expensive part. :X

[italyix]

Originally Posted by RocketyMan

So it's still available you're saying?

Sounds like this would need custom pistons? And this would be the expensive part. :X

It’s still available, only opened it to take a look and it’s still in the tote it shipped with.

Since it’s overbored, custom pistons would be needed.

[RocketyMan]

Originally Posted by italyix

It’s still available, only opened it to take a look and it’s still in the tote it shipped with.

Since it’s overbored, custom pistons would be needed.

From what I can find VAC motorsport is the only one that has 94 mm pistons for factory AluSil block and to maintain stock CR of 12:1 to the tune of $2.2k.

[tdott]

Originally Posted by RocketyMan

From what I can find VAC motorsport is the only one that has 94 mm pistons for factory AluSil block and to maintain stock CR of 12:1 to the tune of $2.2k.

anyone can custom make a piston, you just need to provide the right specs. for that you need an engine builder who knows what they are doing.

or you take that risk yourself.

[UPSROD]

Originally Posted by tdott

anyone can custom make a piston, you just need to provide the right specs. for that you need an engine builder who knows what they are doing.

or you take that risk yourself.

Ideally should be bored to match the piston in your hand!

[RocketyMan]

Originally Posted by tdott

anyone can custom make a piston, you just need to provide the right specs. for that you need an engine builder who knows what they are doing.

or you take that risk yourself.

Yup. I think the stock 92mm pistons measure 91.99 and the block cylinders are at about 92.2mm in that range?

I would wager a piston to wall clearance be at minimum a .1 to .2mm clearance.

[omgzirra_exe]

Originally Posted by RocketyMan

Yup. I think the stock 92mm pistons measure 91.99 and the block cylinders are at about 92.2mm in that range?

I would wager a piston to wall clearance be at minimum a .1 to .2mm clearance.

just find a really good builder, or send this motor to carbanh and they will get it all blueprinted and done.