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  #1  
Old 12-26-2012, 06:09 PM
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Piston help

I need new pistons for my diesel OM621.915 engine. I am not having much luck- can anyone help please? Thanks Paul
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  #2  
Old 12-26-2012, 07:06 PM
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what car is that engine in? or what did the engine come out of? Pelican parts up top should be able to source pistons...
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Old 12-26-2012, 08:26 PM
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Pistons

It is from a L319 diesel truck. Basically a two liter 4 cylinder diesel. 87mm cylinders are original size.
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Old 12-26-2012, 08:29 PM
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I meant to add that pelican does not have these pistons. Paul
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Old 12-26-2012, 08:44 PM
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I don't know anything about this Engine but I remember when I was in Trade School (about 1975) on a Mercedes Engine they found that the Pistons measured out as still serviceable.
They bored out the Block and pressed in generic Sleeves (there is catalogs with different size automotive Sleeves and Sleeve materials).
I can't remember but I am guessing they used Sleeves with a Flange/Lip on the top.
At that time oversized Pistons were available but were too costly for the Owner so they bored, and sleeved it, and bored it again to the Standard Bore

This is the same as they used to do with Gasoline Engines when the Block was already past the last oversize; sleeve back to standard size and start over.
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Old 12-27-2012, 10:32 AM
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Quote:
Originally Posted by 4cam View Post
It is from a L319 diesel truck. Basically a two liter 4 cylinder diesel. 87mm cylinders are original size.
These are the same pistons as either the 190D or the 200D of the 1960s. Check the specs.

OM 621 is the diesel for the 180Dc, the 190D (all) 200D.
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