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Author Topic: Engine bearing tolerance  (Read 4031 times)

hakan

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Engine bearing tolerance
« on: January 22, 2009, 12:39:29 »

I want to get information at Engine bearing tolerance
To 230sl

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menesesjesse

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Re: Engine bearing tolerance
« Reply #1 on: January 22, 2009, 13:21:33 »
What tolerances are you looking for?  Rod Journals? Crank Shaft journals? Piston End Gap? etc. I have them in a book at home.  Email me and I can send the info over to you. menesesjesse@juno.com
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Jesse
1966 Mercedes 230 SL auto
2003 Mercedes E500
1992 Ford F150
1994 Ford Bronco
2019 Shelby GT350R
1967 Mercury Cougar XR7

ja17

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Re: Engine bearing tolerance
« Reply #2 on: January 23, 2009, 01:34:33 »
Hello,

The crankshaft main bearing clearances are;

radial...............      0.045-0.60 mm  (0.050 mm best)
axial................  ( controlled by flanged bearing).....  0.1 - 0.175 mm

The rod bearing (big end) clearances are;

radial:   0.045-0.060 mm  (try for 0.050 mm)

axial when new.....  0.11 - 0.26 mm    after repairs  up to  0.5 mm

See Technical  Data Book July 1963 edition p. 114
« Last Edit: February 05, 2009, 04:02:57 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

pauldridge

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Re: Engine bearing tolerance
« Reply #3 on: February 04, 2009, 12:29:26 »
For Joe,

You stated .5mm clearance for rod bearings.  Is that a misplaced decimal point?  That seems way excessive??
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ja17

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Re: Engine bearing tolerance
« Reply #4 on: February 05, 2009, 04:05:42 »
Good catch Paul,

I listed the axial as radial. The post is corrected and I will send a message to hakan!

Joe
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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
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