Author Topic: Location of rear end number and ratio on 230?  (Read 4110 times)

twistedtree

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Location of rear end number and ratio on 230?
« on: February 10, 2010, 23:14:57 »
Hi,

I've been able to find the rear axle number and gear ration stamped on the rear end in my 280SL.  It's on the under side on a rib that goes forward from the pumpkin towards the input shaft.  But I can't find it on the 230's.  Is it in the same place?  I don't know if there's just a ton of crap the scrape my way through on the older axles or if I should be looking somewhere else.  I saw one diagram that suggested it should be on the side of the pumpkin (left side I think) around the 1:00 position.

Any guidance would be welcome.

Peter
Peter Hayden
1964 MB 230SL
1970 MB 280SL
2011 BMW 550xi

ja17

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Re: Location of rear end number and ratio on 230?
« Reply #1 on: February 10, 2010, 23:26:39 »
Hello Peter,

It is on the back side of the main gear casting on the 230SL. In other words on the gas tank side.
There is a semi circular area machined smooth and the number is stamped on it.
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

twistedtree

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Re: Location of rear end number and ratio on 230?
« Reply #2 on: February 10, 2010, 23:55:43 »
Many thanks.  I'll go scraping and digging.  I'm curious to see what ratios I've got.
Peter Hayden
1964 MB 230SL
1970 MB 280SL
2011 BMW 550xi

DaveB

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Re: Location of rear end number and ratio on 230?
« Reply #3 on: February 11, 2010, 08:51:34 »
Probably 4.08 on a US car. Most owners seem to think they're a little low-geared - to the point where stick shift drivers start in second! Mine is 4.08 but I've only ever driven it round the block so don't really have an opinion yet.
DaveB
'65 US 230sl 4-speed, DB190

Miloslav Maun

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Re: Location of rear end number and ratio on 230?
« Reply #4 on: February 13, 2010, 18:22:53 »
This is the place where it's on my '66 230 SL
Says SL 3/75

twistedtree

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Re: Location of rear end number and ratio on 230?
« Reply #5 on: February 14, 2010, 02:22:54 »
Pictures sure are worth a 1000 words!  Many thanks.
Peter Hayden
1964 MB 230SL
1970 MB 280SL
2011 BMW 550xi

twistedtree

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Re: Location of rear end number and ratio on 230?
« Reply #6 on: February 16, 2010, 22:26:19 »
I found them.  The '64 has a 3.75 and the '65 has a 4.08.  Plus I have another 3.75 on a pallet in the shop.

Thanks again for the help.
Peter Hayden
1964 MB 230SL
1970 MB 280SL
2011 BMW 550xi