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#1
08-17-2006, 04:51 PM
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thinking of doing a standard rebuild need your input
going to go look at this 300sdl saturday and do a pressure check(coolant) and see if it holds pressure or not
if it fails i will see if i can talk him down a hundred or 2 but its no biggie since i would have to take out the head to do the gasket and do the head im thinking of redoing the motor i was gonna tare it down and hot tank it and put in new bearings and rings and gaskets and pump and timing setup and be on my way i mean as long as everything specs out (which shouldnt be a prob) anyone know of anything i should look for /any trouble areas/ and all this would be my first diesel build 
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#2
08-17-2006, 05:03 PM
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Cracked heads and/or bent connecting rods can be a problem, but it is dependant on the year. I have a 123, which have thier own set of issues.
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K 90 Dodge D250 5.9 Cummins/5 speed. 400K Gone and still missed...1982 w123 300D, 1991 w124 300D
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#4
08-17-2006, 05:52 PM
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Pretty deep?? You have to get a crane to reach down that far. LOL.
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1981 300D 147k 1998 VW Jetta Tdi 320k 2001 Dodge Ram 2500 141k 1979 300D 234k (sold) 1984 300D "Astor" 262k(sold) Mercedes How-To and Repair Pictorials I love the smell of diesel smoke in my hair 
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#5
08-17-2006, 08:56 PM
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Usually the pistons should be replaced as they take a pretty good licking with the high compression of these engines, so an overhaul does get "spendy" but if the rest of the car is good...Its worth it
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 1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car"
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#6
08-17-2006, 09:27 PM
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Well, lets say you have to have new pistons
but the rods and crank etc. can be refurbished. My personal perference would be to definitely replace pistons if you take the head off of an unknown mileage engine unless you were an expert at diesel piston wear. Given the head needs to be ground, valves reseated and sealed, etc. Given all the above, What would be the $$ cost of a dependable independent shop performing the work.
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#7
08-17-2006, 09:37 PM
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Well, I had a quote for a 603 head from Metric Motors for around $400 reworked. That's assuming the valves and prechambers were still useable.
Since I couldn't afford the time to ship to them, etc. I went with a local mercedes specialist who did the head for me for $360...roughly what MM was quoting. Obviously valves and prechambers were still good enough..but head was at the limit for tolerances on the shave...something to consider when you pull the head..they may tell you they can't shave it anymore.
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1982 300TD 210K miles ("The Replacement" aka "The Anvil") - SOLD 1979 300SD 245K miles (never ending project) 2007 Pinarello F3:13 1995 Ducati 916 (SOLD, sniff) 1999 Ducati 900SSie (SOLD)
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