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  #1  
Old 10-03-2012, 12:14 PM
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1973 280sl 5 speed Transmission fit on w123?

Hello,
I wanted to know if a 5 speed manual transmission from 1973 280sl would fit my 1979 280ce euro 4 speed?
Thank you

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  #2  
Old 10-03-2012, 05:51 PM
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Well, you have to start with the obvious. Is the starter on the same side of the engine on both cars. If that is yes, you can move ahead. If it is no, it is a big stopper. Another question is, does the five speed on the 280SL shift directly into the gear box, or is it remote and uses shift rods? If it uses shift rods, I would think you should look further. If it does not use shift rods I think you have a big problem.
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Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!
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  #3  
Old 10-03-2012, 06:07 PM
Benzguy300
 
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I know for sure it will fit same transmission, shifter the 280SL uses shift rods and they might be different size longer or shorter flywheel it's the same.
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  #4  
Old 10-03-2012, 11:07 PM
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I just received the part numbers for the engine and transmission from the 280sl.

Does this help clarify?

1172610419 on bell housing
1172512501 on side of trans
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  #5  
Old 10-04-2012, 08:29 AM
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If both cars use a M110 engine, then YES.
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  #6  
Old 10-04-2012, 11:56 AM
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No the other car has a V8 engine not an M110!
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  #7  
Old 10-04-2012, 12:26 PM
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No it will not work. Here is a schematic drawing of the transmission in a 280SL. You can clearly see the starter bump is on the left (drivers) side. Now I doubt very much if the engine for your car has a starter on the left side. I think all W123 engines have the starter on the right side.

http://www.auto-parts.spb.ru/cat/cats/m.mycat?Form


Just did a double check on the W123 with 280 gas engine and here is a schematic drawing of the bell housing showing starter "bulge" on the right.

http://www.auto-parts.spb.ru/cat/cats/m.mycat?Form

Now could the bell housings which were detachable on the W123's except for the 1983 model year, be exchanged between those transmissions? Could be, but I thought the diagrams on the 280SL showed a "one piece" bell housing and transmission. I also think the transmission on the 280SL is not a "constant mesh" design but is a sliding gear type.
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Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!
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  #8  
Old 10-04-2012, 12:48 PM
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Well the above post is probably wrong. I was looking at the wrong 280SL I think. The 1973 is probably a series a 129 series, I was thinking a 113 series, they both have a 280SL, though I don't think the 129 series was sold in the US. The OP should have given the series of the car in the original post. In the above posts the URL I posted will work if you take the end word. "form"off, then you will get to a front page, click on "car" and take it from there.
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Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!
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  #9  
Old 10-04-2012, 01:52 PM
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The original post identifies the donor car as a "1973 280sl". The R107 280 used a M110 engine. The OP later identifies the engine as a V8. If that is correct, then the donor car is a 350 or 450SL. The difference will be in the clutch housings (bell housings) rather than in the gearbox. The five speed versions of the gearbox in question had a longer tail housing to accomodate the fifth-speed gear pair. At the front of the gearbox there exists the possibility of a longer input shaft for the V8 application. A spacer plate could be used to make up the difference for the six cyl. application.

(The R129 did not arrive until the late '80s/1990)
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  #10  
Old 10-05-2012, 10:12 PM
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You sure the donor is a 5-speed and not a 4-speed?
Also can you confirm Frank's suggestion that the car isn't a 280SL?
What are the first 8 digits of the chassis number? Something like 107.043-10 ? Or 113.023-10 ?

Thx -CTH
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  #11  
Old 10-06-2012, 12:07 PM
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Hello everyone,
I am sorry for the confusion. It turns out the person that was selling this engine and transmission had the wrong information. The engine is a V8 and transmission is a manual 4spd. They came of a 1973 350sl.

I was not happy when he told me all of this after all the research I have been doing an posters here have been contributing to.

My apologies...

PS: if anyone is interested in the contract info of the seller of this engine and tranny pm me. He is in phoenix AZ and is asking for $600 for both.
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  #12  
Old 01-22-2013, 09:16 PM
GemstoneGlass
 
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Location: Northern,Ca
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same thing happened to me

I had the exact same thing happen to me. Was the guy from Phoenix by chance? The guy had it listed as a 280sl 5 speed. it ended up being a 350sl 4 speed engine and trans for sale. And yes we emailed and called over it for a while. I even posted about it here as well. Very funny

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