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  #1  
Old 07-23-2008, 02:17 AM
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Rollin' on 16s
 
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Thank you. Hopefully I will not find what you did when I pull the pan.
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1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine
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  #2  
Old 07-23-2008, 02:21 AM
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you have my prayers
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  #3  
Old 07-23-2008, 02:23 AM
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Rollin' on 16s
 
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Was your crank gouged or out of round? How much was the new crank?
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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine
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  #4  
Old 08-23-2008, 10:51 AM
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Quote:
Originally Posted by bgkast View Post
Was your crank gouged or out of round? How much was the new crank?

Crank is back. rouglhy $65 to get polished. It did not need to be turned / reground. The bearing material melted and welded itself to the crank, and I am told that woth hardened cranks that is pretty typical. I was lucky enough to have ZERO material removed from my crank. all my measurements are standard. And I still have a hardened crank. wow
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  #5  
Old 07-23-2008, 02:24 AM
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It looks like low oil to me.. i would suggest a new oil pump..
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1981 240d (engine donor 1983 240d) recently rebuilt engine hurray! - No more.. fought a tree and the tree won.

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  #6  
Old 08-15-2008, 10:35 PM
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I have selected to regrind my original crank to the first oversize and use all original equipment. After talking to a few local machine shops, the expensive nitride hardening is often skipped with excellent results.

Often, the N/A engines eventually find turbos on them as well. As an upgrade, of course(?)
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Old 08-15-2008, 11:37 PM
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Quote:
Originally Posted by jt20 View Post

Often, the N/A engines eventually find turbos on them as well. As an upgrade, of course(?)
I dont think so
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  #8  
Old 08-15-2008, 11:40 PM
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what? Not an upgrade? Or never happens... ? I ve seen two. but they were recent installs, cannot confirm longevity.
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  #9  
Old 08-16-2008, 02:13 AM
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Two thoughts on "Your" Upgrade theory

1. NA engines have no Oil Jets to keep the pistons cool.
2. 'Cranks on NA engines not Nitrided.

"Turbo-ing" a NA is "Train Wreck Waiting to Happen".
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  #10  
Old 08-16-2008, 02:46 AM
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Don't forget the oil pump.

I would certainly not suggest this to anyone. Simply claiming its plausibility.
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  #11  
Old 08-16-2008, 04:56 AM
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Crazy mechanic.
 
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your better off just getting a turbo engine, piston oil coolers, nitrided crank, sodium filled valve faster spinning starter.
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Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac?

As long as they would add one additional commandment for you to keep thy religion to thyself.
George Carlin (Wonder where he is now..)

1981 240d (engine donor 1983 240d) recently rebuilt engine hurray! - No more.. fought a tree and the tree won.

pearl black 1983 240d 4speed (Converted!@$$%) atleast the tranny was rebuilt.
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  #12  
Old 08-16-2008, 01:00 PM
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Rollin' on 16s
 
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He has a turbo engine, he just needs a crank.

Was the crank damaged?
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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine
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  #13  
Old 08-16-2008, 05:35 PM
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cervan, do ever read the entire thread?


BG, yes, all 5 throws had bearing damage. Pretty minor considering what can happen. It is being turned this week.

car should be back together in 5 days.

then troubleshooting for then next 6-8 months (ha!)
Attached Thumbnails
Prelude to crank rebuild / replace-rebuild2-015.jpg   Prelude to crank rebuild / replace-rebuild2-013.jpg  
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  #14  
Old 08-23-2008, 02:40 PM
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Rollin' on 16s
 
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Location: Vancouver WA
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That makes sense. I pulled the pan from mine and did not find any metal. Guess I lucked out.
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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine
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