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Old 09-28-1999, 11:21 AM
Coming back from burnout
 
Join Date: Jun 1999
Location: in the Pacific Northwest
Posts: 2,274
PLEASE HELP ME! I AM STYMIED! I am rebuilding a 83 240D with 616.912, engine number 616-011-28-01, 83 B21. The piston are stamped 90.875, 1 in one place and 64 in another place. They do not have a Star on them.The Mercedes Piston spec table is shown at http://www.jersey.net/~rtc/BENZ.html and does not list these pistons. My bore measures at 90.881 or 3.578". Furthermore why did the builder of this engine use 90.875 pistons-what was his rationale? ARE THESE AFTERMARKET PISTONS?
WHAT RINGS DO I ORDER? IF U DO NOT KNOW ANSWER, ANY SUGGESTIONS?

[This message has been edited by Carrameow (edited 09-28-1999).]

[This message has been edited by Carrameow (edited 09-28-1999).]
  #2  
Old 09-28-1999, 12:25 PM
JDEN
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Posts: n/a
Sounds to me like you will have to go with the next oversized piston and ring set with the rebore to match. If I remember correctly, I think you mentioned in a previous post that the cyliner walls were pitted. Here's yet another reason to go with a new piston set and rebore/resleeve. From the website you put up on the progress of your rebuild, it sure looks like you have a decent 240. Why not put a little extra into the engine rebuild and assure your long term satisfaction with the car?
  #3  
Old 09-29-1999, 09:06 PM
Aaron's Avatar
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Join Date: Aug 1999
Location: Cincinnati, Ohio
Posts: 1,935

So ah, how's about that free Snap-on tool set?

------------------
Rgds,
Aaron Greenberg
MB technician
'67 250SE Cabriolet
'77 450SL
'79 6.9
'79 6.9
'80 300SD
'81 240D
'85 380SE
'89 420SEL
'93 300E 2.8
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