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| | | | Joined: Oct 2009 Posts: 171 'Bolter | | 'Bolter Joined: Oct 2009 Posts: 171 | Hello,
the pistons which were in my engine have a mark on the top. Should show this mark the rear or to the front? Or is it equal where this mark shows?
Ask
Wolfgang | | | | | Joined: Mar 2014 Posts: 4,510 Moderator, Electrical Bay | | Moderator, Electrical Bay Joined: Mar 2014 Posts: 4,510 | The last pistons I bought with a notch in the top were designed so the mark faced the front of the engine, Wolfgang. You should also see marks on the piston rings which show which side faces the top (usually a tiny o is stamped into them).
Jon
~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end
| | | | | Joined: May 2018 Posts: 51 Wrench Fetcher | | Wrench Fetcher Joined: May 2018 Posts: 51 | Rules of thumb, mark towards the front. Exception may apply!
J. F.
| | | | | Joined: Oct 2009 Posts: 171 'Bolter | | 'Bolter Joined: Oct 2009 Posts: 171 | Ok, thank you for your answers.
Wolfgang
Last edited by wokri; 05/27/2018 9:46 AM.
| | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | If you are talking about a Chevrolet 216, the original pistons did not have a front and back. After market aluminum pistons sometimes had a slot in one of the thrust faces and it was intended to go on a specific side. Somewhere around 1954, 235s had an offset wristpin and those pistons were definitely made to go in one way only. | | | | | Joined: Apr 2006 Posts: 506 Shop Shark | | Shop Shark Joined: Apr 2006 Posts: 506 | Hello,
the pistons which were in my engine have a mark on the top. Should show this mark the rear or to the front? Or is it equal where this mark shows?
Ask
Wolfgang No... it is not equal where this mark shows. Do your connecting rods have a stamped number on them? When installed correctly, the stamped number is on the camshaft side of the engine.
-Tom
1950 Chevy 3100 w/ 1956 235
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