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thetorch thetorch is online now
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Join Date: Mar 2021
Location: SF Bay Area
Posts: 559
Update:

I do not, in fact, have a short stroke 3.2, but a regular stroke (74.4) 3.2. This is news to me.

What I found:
Case: 1982 Carrera 3.0 (date mark 82 41)
Pistons: Mahle 3.2 (marked 95P36++)
Cylinders: Mahle 95mm (marked Mahle 95ZN1++).
Carrera 3.2 crankshaft (marked 930 014 09)
Connecting Rods: 3.2 (marked 930.103.121.2 R)
Heads: 3.2 (marked K1926R dated 7-87)
Cam Towers and cams: stock Carrera 3.2 (Left cam marked: 930 14710)
Oil pump: SC part (911.107.105.1R)

Overall condition is very good. Bearings look unmarred, crank looks excellent. I haven't pulled the rods off the crank so I haven't measured any rod journals yet. Oil pump looks like new. Upper head studs are steel, lower studs were replaced with newer porsche steel studs at some point. They look like new.

My friend thinks I should go to 98mm P&Cs to get to (about) 3.4L. My understanding is that I can have the cylinders bored out to 98 without a problem, and get some 98mm pistons with 9.5 or 9.8 compression. This should all bolt right in, correct? The whole setup is 3.2 from the crank to the cam towers (other than the SC distributor gear on the crankshaft, and the case of course).

Open to (constructive) thoughts on my 3.0 -> 3.2 -> 3.4 idea.
Old 07-05-2022, 07:22 PM
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