9turbo51

I am starting a 2.7 build based on an S2 block.
A couple of questions:

The 3.0 blocks have a centrifugal oil compartment. When tanking the block (hot soapy water) do the covers have to be removed to make sure that nothing is left behind?

For the turbo oil supply is it just a matter of drilling and tapping the balance shaft cover? Are there any "tricks" for accomplishing the oil supply?

Thanks in advance!

Darwantae951

Don't know about the oil compartment, but just drill and tap the balance shaft housing. M14 I believe.

pole position

I would pull the oil supply from the oil filter area

Darwantae951

Why?

URG8RB8

I am curious if you happen to know the differences between the S2 crank and block versus the 968 crank and block if any? Does the S2 have the piston squirters as well?

9turbo51

S2 block does not have squirters, can be added. Don't know about the differences, if any, in the cranks.
I will be using a 2.5 crank, selling the 3.0 crank after getting it check out.

No info on the centrifugal oil compartment? With block upside down, you can see, there are covers bolted on at the top of crank case. These are not part of the 2.5 block.
In the Porsche factory manual it states that they do not need to be removed for an overhaul.
What the heck is a centrifugal oil compartment.

Thom

The 968 block has windage trays, the 2.7/S2 hasn't.
All 88mm stroke cranks are the same, 25kg.

blade7

Windage trays ?.

Darwantae951

+1

lart951

I thought the balance shaft on the S2 had a plug that you can unscrew for the turbo oil line, or amI getting old?

blade7

I think he mentioned the BS cover, gramps .

333pg333

I heard there might be a difference in the two cranks, but can't shed any more light on than that. Might be internet rumor.

Darwantae951

No, S2 balance shaft covers do not have a plug, you must drill and tap for the oil feed line.

KSira

Double post

KSira

Are you sure about this? Pretty sure i saw this in a 944 s2 porsche workshop manual.