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#1
12-17-2010, 03:26 PM
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Step by step OM617 head removal
Looking for the definitive post/guide on removing the head on my 1979 300SD to send out to Metric. Someone point me to the best resource guide/post for this noob? Thanks!
__________________
"Opportunity is missed by most people because it is dressed in overalls and looks like work" - Thomas Edison- 1979 300SD 1975 450SL 2014 Ram Cummins Megacab (tow rig) 
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#2
12-17-2010, 03:31 PM
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Quote:
-Get the head/cam from a 81 or newer to get the extra 13 hp you dont have with the 79 w116 motor.  You're in Michigan, isn't metric in CA? no way I would pay to ship back and fourth, Whunter knows a competent place im sure-Up the road from ya.
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#3
12-17-2010, 03:41 PM
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I agree, you should update the head. But I am not sure you need an entire head.... perhaps just the cam.
Also, no need to go to Metric. Review the factory procedure for removing the head, then post questions. You should be able to find the FSM online. I tried to post the file you need, but it was too large.
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#4
12-17-2010, 06:14 PM
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I'll reach out to Roy. Got his number. You bring up an interesting point on the HP though that I hadn't considered. I do have a 1980 300SD in the garage with a known good motor but thought doing the head would be less of an overall hassle (disconnecting ****). What was the cutoff on the improved HP? The 1980 has a build date of 10/1979.
__________________
"Opportunity is missed by most people because it is dressed in overalls and looks like work" - Thomas Edison- 1979 300SD 1975 450SL 2014 Ram Cummins Megacab (tow rig)
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#5
12-17-2010, 06:16 PM
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Metric is actually 3 miles from my sister's house so I can have her boyfriend/significant other schlep for me. If I can find a good place locally of course but hate to save a couple hundred to regret it later...
__________________
"Opportunity is missed by most people because it is dressed in overalls and looks like work" - Thomas Edison- 1979 300SD 1975 450SL 2014 Ram Cummins Megacab (tow rig)
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#6
12-17-2010, 06:55 PM
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any qualified machine shop should have no issue rebuilding your head. no reason to go to metric. if your head is cracked, NOBODY can rebuild it, not even metric. the core would be junked if your head is cracked.
if you get guides, seals, seats, and cleanup after magnaflux testing for cracks, rebuilt is rebuilt. the cam towers, and the cam need to be 82 and up to get good hp, and they need to be 85 for maximum HP. also replace the head bolts~!
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!!  1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#7
12-17-2010, 07:09 PM
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Hmmm...maybe the best course of action is use the known good motor now and slow-boat a rebuild of the other with the upgraded performance. Decisions...
__________________
"Opportunity is missed by most people because it is dressed in overalls and looks like work" - Thomas Edison- 1979 300SD 1975 450SL 2014 Ram Cummins Megacab (tow rig)
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#8
12-17-2010, 07:37 PM
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Quote:
Iron heads can easily be repaired by a qualified shop. Probably best to just get another considering the availability of parts, though.
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#9
01-02-2011, 09:52 PM
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Got the head released, picking up a hoist from a friend tomorrow. Will reach out to Roy for a local recommendation on machine shop. What/where might a guy look to find the '85 cam and cam towers?
__________________
"Opportunity is missed by most people because it is dressed in overalls and looks like work" - Thomas Edison- 1979 300SD 1975 450SL 2014 Ram Cummins Megacab (tow rig)
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