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Author Topic: Late 1970 280SL Camshaft  (Read 5775 times)

Jack Jones

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Late 1970 280SL Camshaft
« on: January 19, 2015, 14:58:50 »
I am looking at a 02 camshaft for my 1970 US emission 280SL and would like some advice. Since I believe this is a Euro spec cam how would it perform when used in my application. I am completely overhauling the engine including a new cylinder head, pistons, bearings etc.

Jack   
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Jack Jones                                                                                                   
1970 280SL 4 Speed
1984 280SL 5 Speed

ja17

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Re: Late 1970 280SL Camshaft
« Reply #1 on: January 19, 2015, 15:29:36 »
Hello Jack,

The "hot cams" for the 280SL euro spec engines were "02" and "09".  The "09" was the same spec but was made from "improved material".   Be careful with the cam supports. At some point they increased the diameter of the cam bearing journals. Early and late sets of cam supports will not interchange. No sure of the specifics on this. Keep them matched with the cam they came off of if possible.
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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

Jack Jones

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Re: Late 1970 280SL Camshaft
« Reply #2 on: January 20, 2015, 14:24:36 »
Hi Joe,

Thank-you for you advice. The 02 camshaft I am looking at is new from Mercedes as they are still available and I would assume adhere to the improved materials updates. Should I be replacing the cam bearing journals as a good practice or can they be reused if there are no signs of wear and are within spec?

Jack
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Jack Jones                                                                                                   
1970 280SL 4 Speed
1984 280SL 5 Speed

ja17

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Re: Late 1970 280SL Camshaft
« Reply #3 on: January 20, 2015, 15:10:49 »
If the cam holders show no sign of damage and are up to specs, there is no reason they cannot be re-used. Some like to change them in any case, however they are quite pricey these days. The rocker arms are most often replaced with new, since any wear ridges on them might transfer to your new camshaft.
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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

Jack Jones

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Re: Late 1970 280SL Camshaft
« Reply #4 on: January 20, 2015, 16:55:39 »
I agree Joe and I have a set of new MB rocker arms waiting for the install.

Thank-you for your assistance Joe.
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Jack Jones                                                                                                   
1970 280SL 4 Speed
1984 280SL 5 Speed

G$ 993

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Re: Late 1970 280SL Camshaft
« Reply #5 on: February 27, 2015, 05:34:18 »
I am in the process of installing an 02 cam in my 1970 SL.  I went ahead an ordered new towers, rocker arms, bearings, etc.  Install is going well.  Can give thoughts on the conversion when complete.
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Jack Jones

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Re: Late 1970 280SL Camshaft
« Reply #6 on: February 27, 2015, 22:19:13 »
That would be great and I look forward to it.
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Jack Jones                                                                                                   
1970 280SL 4 Speed
1984 280SL 5 Speed

Benz Dr.

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Re: Late 1970 280SL Camshaft
« Reply #7 on: March 01, 2015, 22:18:24 »
Pay attention to rocker geometry. Get this wrong and you will be installing a new set of valve guides.
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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

G$ 993

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Re: Late 1970 280SL Camshaft
« Reply #8 on: March 08, 2015, 06:09:40 »
Finally got to drive the car with Cam 02.  Very nice.  Car idles very well and pulls smoothly and powerfully.  If you are looking at doing top end work, this is a nice upgrade.  The cam I replaced (10) was flat as the oil feeder line had a small bend which caused oil starvation to a couple of lobes.  No reservations regarding this mod!
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