Cylinder Sleeves?

[Dusty4]

I have heard that cylinder sleeves are available for MB diesels. We used these in our heavy equipment when rebuilding engines, so the original pistons could be reused. Comments or info? Thanks, Dusty

------------------
82 240D

[Alain V.]

Yes, sleeves are available and that is how I do my diesel rebuilds. The place to look for wear on the pistons is the ring land area, and the wrist pin hole.

A list of items that I always replace during a high mile rebuild on a diesel:
obviously the rings, bearings, gaskets, timing chain & tensioner, valve guides & seals, crank gear and front seal sleeve, oil cooler hoses, vac diaphragm,water pump, I'm sure there's a couple of things I over looked



------------------

I was going to reply by saying yes you can get the sleeves - the rest of what I was going to say is in the previous reply.

The sleeves will of course have to machined to fit the pistons.

------------------
Bob1

Dusty,

As one of the replies above indicated, these are dry, machine fit sleeves. The idea of these sleeves availability seems to be that if something catastrophic occurs, you can save the block, by resleeving the bad hole. This will have to be done by a COMPETENT automotive machinist on a completely stripped block. Don't get these confused with the wet sleeves used in over the road and construction equipment.

Alain,

Are you saying that you resleeve these blocks to standard and reuse the original pistons? If so, what has your success rate been with this approach?

Have a great day,

------------------
Larry Bible
'84 Euro 240D, 523K miles
'88 300E 5 Speed
'81 300D Daughter's Car
Over 800,000 miles in
Mercedes automobiles

[stevebfl]

We always replace pistons when we rebuild MB diesel engines; if they have more than 150k on them.

The pistons are available in .5mm oversize and the boreing to this size is about a quarter or less of what it costs to machine out the sleeves, press in new ones and rebore to fit pistons. As a result the cost to resleeve a motor and reuse pistons is probably more expensive (4x cost for machining, cost of sleeves, and cost of rings compared to: cost of single bore and cost of pistons with rings). BTW original rings are more than half the cost of pistons. Piston assy's are readily available from Mahle but all the separate ring sets are not original (Mahle or Kolbensmidt are original equiptment)unless bought through MB.

This info applies to 621/615/616/617 engines. I'm not sure whether the 601/602/603/606 motors have oversize pistons available.

With as much work as is necessary to do a rebuild getting cheap on the heart of the system don't cut it. It sure don't when it costs the same anyway.

------------------
Steve Brotherton
Owner 24 bay BSC
Bosch Master, ASE master L1
26 years MB technician