I've always assumed that my 92 300D 2.5 turbo had dry cylinder liners. The 124 owners bible suggests this is not the case. However my Performance Products catalog shows the liners as available for my engine.

Does anyone on this forum know if the 602 5 cylinder has liners .
Thanks, Roscoe

I don't have my 602/603 engine book handy but as I recall the early 603's had cylinder liners - they were phased out relatively early in the production run. I don't belive any 602 turbo's had cylinder liners - maybe somebody that has their book handy can check for you.

Are you rebuilding your 602? If so how long did it last?

It really doesn't matter, even if it was one of the ones with liners, your best approach for rebuild is to bore oversize and replace pistons.

Good luck,

Larry

Have you checked the price of a 602/603 piston?

No I haven't, but I would not reuse a piston from one of these engines. A diesel piston is EXTREMELY highly stressed.

That said, if you're bent on sleeving back to stock bore, you don't need liners from MB. This is standard procedure stuff for a decent auto machine shop. They bore the cylinder out quite a bit and drive a sleeve in place, cut the top and bore the cylinder with their boring bar. There are all different sized sleeves available to them.

Good luck,

I don't understand the recomendation to bore a sleeved engine? The sleeves are there for a reason. If I was ever to do mine I would re-sleeve it with new piston etc. On larger diesels they call them "kits" and you rebuild the engine in place usually.

__________________
1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

The sleeves can be there for a number of purposes. If for some reason you wanted to reuse the piston, you can resleeve. If the sleeve is scored beyond boring out to 1st or 2nd oversize, you can resleeve.

However, if I am buying new pistons, there is no reason to resleeve, especially at $37 a piece.

But if someone gave me a set of standard size pistons, I guess I would resleeve. (HINT HINT, I need a set for an 86 300SDL)

__________________
Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)

from the Flathead Fords of the late '30s, with which I had some of my earliest mechanical lessons, toddling along behind my father -- those had extremely porous, but thick cast iron blocks which would leak or crack if the sleeves were left out.

In fact, that's exactly what happened to the first motor in my early '60s autocross car, which was powered by a '39 Ford V8-60 midget racing engine converted back to gasoline and hitched to an Austin-Healy 3000 4 speed + OD gearbox by a homemade adaptor. The motor was overbored .125" (to 150CID) and a cylinder wall collapsed on the way home from a date on a very cold winter night in Minnesota. That gave me an excuse to install the then new Ford 260 CID smallblock from a wrecking yard, but it overstressed the trans.