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Old 08-09-2021, 02:44 PM   #1
Tobias
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Join Date: Aug 2021
Location: Winterthur, Switzerland
Posts: 12
Question Engine overhaul options/decision

Hello

I'm new to the barn and just started a A project.

I dismantled the for at least 25 Years sleeping engine. Head pulled.jpg Two oil rings where broken and one compression ring has gone during the removing. After cleaning (the cylinder surfaces felt smooth again) I mesured the cylinder an piston diamters. Engine bore mesurements.jpg

With my simple understanding I'm not sure which oversized pistons are in. Should be the 0.06 in, right?


What treatment would be recommended in this case? Could a new honing and new ring sets work out or is a borint to the next oversized piston diameter a must? Engine bore original and play.jpg


Btw is the piston play of 0.002 in to 0.007 in correct?


Thanks a lot for any reply
Attached Images
File Type: jpg Head pulled.jpg (137.0 KB, 66 views)
File Type: jpg Engine bore mesurements.jpg (160.6 KB, 74 views)
File Type: jpg Engine bore original and play.jpg (72.3 KB, 44 views)
Attached Files
File Type: pdf Engine bore.pdf (163.6 KB, 22 views)

Last edited by Tobias; 08-09-2021 at 02:49 PM.
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