M106 piston rings

Discussion pertaining to positive pressure E28s.
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Velocewest
Posts: 1558
Joined: Feb 12, 2006 12:00 PM
Location: UK

M106 piston rings

Post by Velocewest »

M106 piston rings are a unique part number -- no cross ref to other 92mm pistons. Are the rings really unique? Anyone just use NA 3.5 rings in a rebuild?
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Duke
Posts: 9986
Joined: Feb 12, 2006 12:00 PM
Location: Ormond Beach, FL

Post by Duke »

When they built my M106 short block they used chrome-moly raceing rings. That does not answer your question but is an option.
Last edited by Duke on Apr 01, 2006 6:55 AM, edited 1 time in total.
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Velocewest
Posts: 1558
Joined: Feb 12, 2006 12:00 PM
Location: UK

Post by Velocewest »

Thanks Duke. I've thought about Total Seal. It occured to me that I've got a couple sets of old pistons with rings in the garage, so I can compare the old M106 rings to regular M30 rings. At least I can see if there are any obvious differences.
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Jimmie G
Posts: 452
Joined: Feb 12, 2006 12:00 PM

Post by Jimmie G »

My understanding is if you use the chrome moly's you need to micro hone the cylinders to very fine finish. Anyone have input on this?
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