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Old 10-25-2005, 04:13 PM
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1987 300TD Wagon Engine Question??

I was talking to Mike at Metric in California an picked his brain concerning longevity of the 603 engine. The car that I need to replace the head has 188,000 on it and asked Mike how long should the bottom end last? To my surprise he stated he would rebuild the whole engine. Not much longer he stated. I was shocked anticipating atleast another 100,000-150,000 with no problem. Am I delusional? All comments and experiences appreciated.

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Old 10-25-2005, 04:39 PM
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Dieseldiehard
 
Join Date: Oct 2002
Location: Bay Area No Calif.
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Quote:
Originally Posted by gvanhouten
I was talking to Mike at Metric in California an picked his brain concerning longevity of the 603 engine. The car that I need to replace the head has 188,000 on it and asked Mike how long should the bottom end last? To my surprise he stated he would rebuild the whole engine. Not much longer he stated. I was shocked anticipating atleast another 100,000-150,000 with no problem. Am I delusional? All comments and experiences appreciated.
I don't know Mike but I know the machine shop that Metric uses and can attest to the excellent quality of workmanship on diesel heads, its absolutely tops!
However he doesn't seem to follow the experience of myself and mechanics I know regarding the bottom end. We know from experience that the bottom end on the 603 and 617 is quite good and can last to near 500K miles if you are speaking of the crank and rod bearings. Usually before an engine reaches that mileage it needs a complete rebuild. 100K - 150K is nothing for one of these engines.
If you want to discuss piston rings that is another story. While replacing a #14 head that failed due to a crack caused by overheating (original radiator!), I decided to replace the rings. Presently WIP. I cleaned the pistons and miked the lands they were fine and I found my cylinder walls are in good shape at 265+K. One had a light score from a worn ring but it sin't anything serious. The crank is fine and to install new cylinder liners was not justified.

A crank normally doesn't go bad unless the engine lost oil or water got into the crankcase and was allowed to remain there for a period of time.
Was there something other than a cracked head that led to him thinking the "bottom end" is bad?
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'00 E320 (wifes car), '95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!
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Old 10-25-2005, 04:41 PM
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Dieseldiehard
 
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Location: Bay Area No Calif.
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Quote:
Originally Posted by gvanhouten
I was talking to Mike at Metric in California an picked his brain concerning longevity of the 603 engine. The car that I need to replace the head has 188,000 on it and asked Mike how long should the bottom end last? To my surprise he stated he would rebuild the whole engine. Not much longer he stated. I was shocked anticipating atleast another 100,000-150,000 with no problem. Am I delusional? All comments and experiences appreciated.
Check back with Mike when you reach 275K or 300K miles
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Old 10-25-2005, 04:53 PM
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No there was nothing other than the car overheating. I got the car on Saturday and the coolant was full and clean no oil. The radiator was replaced with a new one. I noticed that the glow plug lead closest to the firewall was missing some insulation and thus there might be an electrical problem. One thing that I noticed was the turbo was drenched in oil and coolant. There is a rubber line that I found was not connected off of the turbo. ANY Ideas ?
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Old 10-25-2005, 05:32 PM
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smoke gets in your eyes
 
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As long as there's a line from the compressor housing to the wastegate actuator, you're fine. The line commonly removed or plugged is the line to the air recirculation valve in the turbo. In a Garrett the line goes straight in from the front of the car into a turbo appendage held on the compressor housing by 3 bolts.

Sixto
87 300SDL

Last edited by sixto; 10-25-2005 at 11:36 PM.
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Old 10-25-2005, 11:07 PM
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I wouldn't consider touching the bottom end at that mileage. Unless it was run without oil or with tons of coolant in the oil. But their would need to be a good rod knock to get me to take it apart.

If it had 300k on it then I would consider a bottom end rebuild, but only after a compression and leakdown test.

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