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Author Topic: If you had the engine out, what would you do to it  (Read 5517 times)

Miloslav Maun

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If you had the engine out, what would you do to it
« on: January 15, 2006, 13:11:57 »
I have the engine out of the car for painting. What would you recommend to do to it? It did not have any problems before. It ran fine.
I plan to have the valve cover seal changed. The transmission also needs to be opened because of a worn synchro ring. But the engine itself did not have any issues...
I wonder if there any "if-I'm-already-there" task list... 8)
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erickmarciano

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Re: If you had the engine out, what would you do to it
« Reply #1 on: January 15, 2006, 14:52:59 »
rear main seal , front seal , chain , water pump

1971 280sl
1962 VW
1954 Allstate vespa
1958 gs150 vespa
1962 gs160 vespa
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1994 E500 W124
1971 280sl
1989 Porsche 930 coupe
1988 e30 m3
2001 ducati mh900
2006 ps1000
1962 Vespa GS160

saygold

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Re: If you had the engine out, what would you do to it
« Reply #2 on: January 15, 2006, 17:31:57 »
Replace the front transmission seal would be a good idea as well, particularly if you are installing the rear engine seal.

Ken
'66 230SL
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ja17

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Re: If you had the engine out, what would you do to it
« Reply #3 on: January 15, 2006, 18:57:13 »
Hello Muf,
I agree with Erick, also check motor mounts and the verticle timing gear.
The problem with replacing the rear engine seal is the oil pan and the crankshaft must be removed to replace the upper half of the seal!!! Lots of work. You may just want to replace the front engine seal, no oil pan and crankshaft removal.

You probably will find that the sychros in the transmission are fine. The gear cluster becomes loose and causes hard shifting and some gears to nip. Sychros do not usually wear on these transmissions. Replace them all anyway they are inexpensive.

Joe Alexander
Blacklick, Ohio
« Last Edit: January 15, 2006, 18:58:42 by ja17 »
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Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback

erickmarciano

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Re: If you had the engine out, what would you do to it
« Reply #4 on: January 15, 2006, 19:07:54 »
Joe I was told by an old school mercedes mechanic that most of the time it is the bottom half of the rear main seal that goes bad is this so?
could we add a little more than the BBB says of seal on each side to compensate for the leak and not replace the top part?

1971 280sl
1962 VW
1954 Allstate vespa
1958 gs150 vespa
1962 gs160 vespa
« Last Edit: January 15, 2006, 19:09:11 by erickmarciano »
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1994 E500 W124
1971 280sl
1989 Porsche 930 coupe
1988 e30 m3
2001 ducati mh900
2006 ps1000
1962 Vespa GS160

Chad

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Re: If you had the engine out, what would you do to it
« Reply #5 on: January 15, 2006, 20:11:29 »
mounts of the subframe too  ?
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ja17

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Re: If you had the engine out, what would you do to it
« Reply #6 on: January 15, 2006, 23:01:45 »
Hello Erick,
I have never tried just the bottom half, but I guess this does seem logical.



Joe Alexander
Blacklick, Ohio
« Last Edit: January 15, 2006, 23:04:23 by ja17 »
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Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback

Miloslav Maun

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Re: If you had the engine out, what would you do to it
« Reply #7 on: January 16, 2006, 03:27:08 »
Joe, I suspect the synchros because it is about the same symptoms like on my Porsche 911 transmission (the 915 type) - this was repaired by replacing the synchro rings.
The tranny grinds when shifting from the 1st to the 2nd (and also from the 3rd to the 2nd). This is really so bad that you must either wait till the motor revs fall down or double clutch. I know that the porsche transmission uses different type of synchro rings (the porsche system) but I do not know what else could make those scary sounds apart from synchros. Well, I hope the mechanic whom I give the tranny to rebuild will know :-)
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Ben

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Re: If you had the engine out, what would you do to it
« Reply #8 on: January 16, 2006, 04:21:16 »
quote:
The gear cluster becomes loose and causes hard shifting and some gears to nip. Sychros do not usually wear on these transmissions. Replace them all anyway they are inexpensive


..........what is the remedy for a loose gear cluster ? Do you just replaced the bearings, shim it all up and ensure the rear output shaft nut is correctly torqued and locked with the Tab washer ?

The transmission tour we spoke of previously looks a bit more important now since it seems a few of us want to work on our manual boxes !

Regards,
Ben in Ireland.
'64 230SL 4sp.
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andre_morcos

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Re: If you had the engine out, what would you do to it
« Reply #9 on: January 16, 2006, 08:39:56 »
Hi Muf,
I agree with all of the above comments. But just would like to add a few of my own.
Since the engine is out why don't you powdercoat the parts that need it, and spray the black bits(power steering unit,steering column,and all small black bits and pieces) with black semi gloss paint. The right combination is 60% gloss to 40% matting agent.This will give you the right texture and sheen, as I did it on my car a year ago.
Why not since the engine is out.And you can give it a real cleaning with STP Engine cleaner.
Once you do that, your engine will be much fresher and once it's back in place you'll have yourself a great feeling of self satisfaction.And belive me the result is worth the effort.
Regards,

Andre Morcos(UAE)
1964 230 Sl
1960 220 Seb

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Benz Dr.

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Re: If you had the engine out, what would you do to it
« Reply #10 on: January 16, 2006, 09:21:50 »
Imput shaft should have next to zero end play. Any amount of end play affects shifting. I use synthetic trans fluid which greatly aids in smooth shifting.
The front seal can not be replaced without a special installation tool - I made my own.

Dan Caron's
 SL Barn
benzbarn@ebtech.net
 slbarn.mbz.org
  1 877 661 6061
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1966 230SL 5 speed, LSD, header pipes, 300SE distributor, ported, polished and balanced, AKA  ''The Red Rocket ''
Dan Caron's SL Barn

1970  3.5 Coupe
1961  190SL
1985   300CD  Turbo Coupe
1981  300SD
2013  GMC  Sierra
1965  230SL
1967 250SL
1970 280SL
1988 560SEC

Miloslav Maun

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Re: If you had the engine out, what would you do to it
« Reply #11 on: January 16, 2006, 09:57:14 »
I plan to have the whole transmission resealed. So I buy the complete seal set for the tranny.
But I do not understand the motor stuff much. Could someone of you be so kind please and tell me what are the parts numbers. I think I will order the seals at SLS Hamburg. They have a nice catalogue at http://www.sls-hh-catalogue.de/bin/dbframes.phtml?mid=IN02 . Just a simple copy&paste the Artikel #
Especially not sure what the "rear main seal", "front seal"is
BTW: The motor mounts are reportedly still OK so I am not going to replace those. Of course that I wish to have all the origonally black parts to be repainted black again. No question about it.
Thank you all for help! :-)
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Ben

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Re: If you had the engine out, what would you do to it
« Reply #12 on: January 17, 2006, 02:54:27 »
quote:
The front seal can not be replaced without a special installation tool - I made my own.


Thanks Dan..........interestingly I replaced my front seal without any special tool...................now it leaks !!   :oops:

Regards,
Ben in Ireland.
'64 230SL 4sp.
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