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Buying OM617 Pistons Buying OM617 Pistons
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  #16  
Old 01-08-2014, 03:08 PM
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Quote:
Originally Posted by lacolocho View Post
Somebody want to bring in the truth of the matter
Dry liners. Absolutely 100% dry. I will pay for engine rebuilds for everyone on the forum if they are wet liners.

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  #17  
Old 01-13-2014, 11:38 AM
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******* has piston sets
Mercedes Piston w/Rings (240D 300CD 300D 300TD) - Mahle 6160306817 | FCP Euro
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  #18  
Old 01-13-2014, 01:45 PM
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$112 each is not so bad. Any reviews on the Mahle pistons?
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  #19  
Old 01-13-2014, 01:59 PM
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Originally Posted by lacolocho View Post
$112 each is not so bad. Any reviews on the Mahle pistons?
Original equipment for many Mercedes engines (not all). Usually are more expensive than other alternatives. For example for my M102 Nural were cheaper than Mahle and Kolben Schmidt...
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  #20  
Old 01-13-2014, 02:02 PM
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Great find on the $115 ea pistons, and incl rings and roll pins sweetens it. I still need to rebuild my 85 engine, but already have a set of used pistons (courtesy RollGuy). People in a Mopar forum fuss because a set of 8 forged pistons for the 273 cost $375 (vs $200 for 318 forged). Of course, a Chevy SB set is $90.

As far as the wet vs dry question, the block is totally dry where the sleeves fit. Just look up my post w/ photos where I show peeling the old liners out.
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  #21  
Old 01-13-2014, 07:33 PM
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Does anyone have a handle on fit and part numbers for pistons and liners?
There appears to be 2 models available from tcp:

Pistons
Mahle: 6160306817,06033045057,0024902
KS: 6160306417,06033043053,137416

Liners
Mahle: 6010110010, 6033052053
KS: 6160111210

the "master rebuild list" posting says the piston is 6170301017. Looks close
but not quite there.
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  #22  
Old 01-13-2014, 11:04 PM
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Those are NA pistons not Turbo pistons.... If you have a turbo motor these will not work.

Here is a link to some Turbo piston sets...http://www.prostreetonline.com/m/mercedes_piston-set.asp

Just checked and they are not in stock as the page says
Last edited by OM616; 01-13-2014 at 11:25 PM.
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  #23  
Old 01-29-2015, 02:31 AM
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Quote:
Originally Posted by OM616 View Post
Those are NA pistons not Turbo pistons.... If you have a turbo motor these will not work.

Here is a link to some Turbo piston sets...Mercedes Benz Piston Set

Just checked and they are not in stock as the page says
Dude at Metric says all they can get now are the ones from Mercedes. They used to use Mahle etc but they stopped making them.
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  #24  
Old 01-29-2015, 04:01 AM
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FYI
Quote:
Originally Posted by Dan Stokes View Post
The best advise is - DON'T! The OM617 uses wet sleeves and they are replaceable. Generally the pistons are OK and renewing the bores means that you can reuse the pistons in essentially a new bore. You'll want a fresh ring set but again they're not too expensive.

The reason to do this? Sleeves are fairly cheap and pistons are VERY pricey. If the pistons have failed in some way it might be cheaper to buy an engine from PnP and rebuild using those pistons. Like I said, the pistons generally last forever. If you REALLY need new slugs, this is NOT a place to cut corners. Pelican Parts likely has as good a price as any for quality parts.

Dan
Dan, and many others are correct.

The OM617 is designed / engineered to reuse the pistons for millions of miles of service.

This engine was / is used in class 8 HEAVY trucks, Heavy equipment, Marine / stationary generators, etc.

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  #25  
Old 01-29-2015, 06:01 AM
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Finally Whunter points out which post was using FSM information....
I can't believe how many bad posts there are in this thread.....
A bunch of you have never seen a MB FSM.... you are relating things done by other makes... which do not at all apply to how these engines are designed.
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  #26  
Old 03-31-2016, 08:02 PM
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Been on the piston hunt again and thought I'd revive this thread...

Quote:
The OM617 is designed / engineered to reuse the pistons for millions of miles of service.
While the above may be true, the reality is that about 90% of the pistons on the motors that we pull apart are no good. In order to put a good motor together, it will take us 6 or 7 motors to come up with one good set of five pistons.
Metric Motors has confirmed a similar experience.
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  #27  
Old 03-31-2016, 11:10 PM
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Originally Posted by reinventthewheel View Post
Been on the piston hunt again and thought I'd revive this thread...


While the above may be true, the reality is that about 90% of the pistons on the motors that we pull apart are no good. In order to put a good motor together, it will take us 6 or 7 motors to come up with one good set of five pistons.
Metric Motors has confirmed a similar experience.
What sort of mileage are you seeing for good pistons/bad pistons?
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  #28  
Old 04-01-2016, 03:02 PM
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There's not a set pattern based on mileage. Of course lower miles means better parts as a general trend, but we see plenty of lower-mileage motors that weren't taken care of (usually oil leaks that weren't addressed and the levels got too low).

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