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85RedCarrera 85RedCarrera is online now
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Join Date: Apr 2025
Location: NorCal Foothills
Posts: 274
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For a 3.2, I think you stuck with .25mm, .50mm, and 1.0mm shims...there is nothing in-between.

For .75mm you have to stack a .25 and a .50

If there are .75mm shims out there, I could not find them. LNE sells a lot of custom shims for the older engines

My Mahle Motorsports (Moritz single-plug) piston/cyl kits required .75mm shims with the combustion chambers that I got back from my machinist (~89.5cc) to keep the deck heights above 1.1mm
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Dave
Project: 1985 Porsche 911 Carrera Coupe 3.2 to 3.4L "Carina"
PCA Member- Sacramento Valley region
Old 01-16-2026, 07:21 AM
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