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  #1  
Old 02-25-2004, 04:27 PM
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Location: Tucson, AZ
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A coupe of REALLY interesting EBAY items

This one for for what appears to be a real nice 280SEL, but what grabbed my attention was the changed rear gear ratio to 4.09....I bet it really jumps. At the expense of some cruising fuel economy I bet.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=6336&item=2462771916

The Next item is for headers for the 117 engine. I notice that it has an O2 port so they must have been for something other then a 108 chassis.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33631&item=2462656714

Perfect for Tomguy in his persuit of more get up and go.
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Litton
'90 420 SEL (sold)
'72 280 SEL 4.5
'98 ML320 (for sale)
'86 560SL
'05 Jeep Grand Cherokee Ltd (offroad in style)
'87 Chevy Blazer (AZ Pin Strips)
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  #2  
Old 02-25-2004, 04:38 PM
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Join Date: May 2002
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Hmm, that 4.5 must top out at about 90mph with the 4.09 rear end! Well, that might be exagerating the point slightly...

You could really burn up a set of tires with that, but it must be a drag on the highway. Mine hums as it is at 80 with the stock rear end (I thought they were 3.23's)?

-JAS
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  #3  
Old 02-25-2004, 05:05 PM
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headers....

I'd LOVE to see pics of those installed...

You'll still need some custom plumbing done -
on the pass side you have two down pipes that converge under the floorboards.

If I didn't have a timevalve stainless and just R&R'd my manifolds, I'd be all over the headers.
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  #4  
Old 02-25-2004, 05:18 PM
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I don't think that either side would work well in the 108'109 with the stock pipes. The pass has 2 pipes, yes, but the driver's side manifold has the exit between 2nd and 3rd pipes, this is much closer to the end - you'd need a custom exhaust.

Litton: When I (someday) get the cash, I'm going to have my own pipes designed, and try to find a way to have dual dual exhausts (like a lot of newer cars have - 2 pipes on the left, 2 on the right) with the crossover somewhere close to the engine.
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My Mercedes Benz 108 and 109 resource site

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  #5  
Old 02-25-2004, 07:10 PM
Fimum Fit
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She's so fine,

my 4.09!

Seriously, though, what model would the 4.09 ratio have come from? Something with a 4 cyl. or a very small 6? Perhaps a taxi option in Europe? Not likely, in any case, to have enough guts to take the torque of a 4.5 for very long.

Last edited by Fimum Fit; 02-26-2004 at 07:17 AM.
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  #6  
Old 02-26-2004, 02:15 PM
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Location: sunnyvale ca
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the 02 port could be for a wideband

like this one http://www.innovatemotorsports.com/
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  #7  
Old 02-26-2004, 03:41 PM
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Those headers look real intresting. Anyone guess when type of performance increase one might expect with these?
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  #8  
Old 02-26-2004, 04:45 PM
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I could be wrong, but looking at the exhaust on a 108 4.5, I just don't think that it it's that ineffienant. The pipes look like there are pretty much equal length, they are reasonably free of kinks. In fact each side is a 2 into 1 then to a collector. I think MB did a pretty good job putting this engine togeather and would be surprised if they even matched the ports.

Honestly, in a 108 I think the actaul HP gain would be minimal. Now if you are talking a 74 and later 450 SL, I bet it would be a differant story with the smog et al.
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Litton
'90 420 SEL (sold)
'72 280 SEL 4.5
'98 ML320 (for sale)
'86 560SL
'05 Jeep Grand Cherokee Ltd (offroad in style)
'87 Chevy Blazer (AZ Pin Strips)
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  #9  
Old 02-26-2004, 07:27 PM
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One thing I don't get about the 117/108 combo is that the right (pass) side has 2 downpipes and a union around the transmission, where the driver's has a single manifold and only 1 pipe. This is the crossover thing all over again, just in a different way - the right side has a crossover much later, the left side has to crossover in the manifold itself! Unsure about the effect this has on performance...

I don't think those would even fit into a 108/109... the pipes on them would probably be out too far and would be on the chassis!
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Current:
2018 Chrysler Pacifica Limited
1999 Chrysler 300M - 211,xxx

My Mercedes Benz 108 and 109 resource site

Previous:
1972 280SE 4.5
2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi"
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