 Help to Identify These Pistons |
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| Tom1394racing |
 Feb 25 2026, 09:23 AM
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#1
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Senior Member  Group: Members Posts: 507 Joined: 25-August 07 From: CT Member No.: 8,039 Region Association: North East States 
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While going through my stash of parts, I found this unused piston set. Flat top, no valve pockets, 82 mm diameter with Kobelschmidt markings. They do not seem to match any Porsche or VW specs that I am aware of.
Does anyone recognize these?     |
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Replies(1 - 3)
| Krieger |
Feb 25 2026, 09:51 AM
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#2
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Advanced Member Group: Members Posts: 4,838 Joined: 24-May 04 From: Santa Rosa CA Member No.: 2,104 Region Association: None
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I see K with an S over it. Kolbenschmidt (IMG:style_emoticons/default/confused24.gif)
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| Jack Standz |
Feb 25 2026, 02:16 PM
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#3
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Senior Member Group: Members Posts: 715 Joined: 15-November 19 From: Happy Place (& surrounding area) Member No.: 23,644 Region Association: None
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Best guess is that those are Type 1 1500 pistons.
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| fixer34 |
Feb 25 2026, 06:00 PM
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#4
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Senior Member Group: Members Posts: 1,392 Joined: 16-September 14 From: Chicago area Member No.: 17,908 Region Association: Upper MidWest
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Dug out my old Type 3 tech manual. 1500 engines were 82.95mm and 1600 were 85.45mm. It says that KS and Mahle pistons were used, but probably not VW pistons.
Also looks like 'racing style', there isn't much of a lower part of the piston. |
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