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  #1  
Old 06-07-2014, 08:22 PM
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Location: Tinley Park, IL
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603 IP differences (eg late model .97)

I have read a lot of the previous discussions regarding the .96 and .97 IP differences, and the effect of having an early .97 on a .96 engine can have, but I was curious about the later model .97 IPs. Seeing as the HP rating increased in 94-95 models (maybe 93 too?), my question is, are all of these differences still based on the stock max fueling? For example, the early 3.5 has 134 hp and later had 148 or 150, but did they just adjust the full load from the factory? If so, how does that explain the same torque numbers?

I know there is more to it than just this (such as larger displacement of the 3.4), but for argument's sake, people would say the early .97 only made 134 hp, but at the same time it was at 4k rpm, which if that was dragged out to 4600 like the .96, would still be around 153 hp which is pretty close to the .96 settings. Could the power increase on the later w140s been from the better exhaust manifold??

I'm just trying to figure out if there would be any benefit from trying out a later model .97 IP. I was thinking about going that route for a mild performance upgrade, or possibly looking into the 6mm swap for my current IP. I have an SDL and spend most of my time in it cruising the highway, so passing power/ on ramp acceleration is more of my interest than raw max hp (although I wouldn't mind that either!)

Anyway, if there is any more info or ideas out there, I'd be interested in hearing about it!
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1987 300SDL s200g, Herlevi pump, Elbe manifold, 722.6 collecting dust - 185k
Past: 1987 300D - 264k
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  #2  
Old 06-09-2014, 03:20 PM
winmutt's Avatar
85 300D 4spd+tow+h4
 
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Same size elements I believe so the only real differences would be internal adjustment. If you want I'll sell you my old pump which had a few screws turned.

Also without a cat, the official MBZ output on a 603.960 is 168hp.
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1987 300D Sturmmachine
1991 300D Nearly Perfect
1994 E320 Cabriolet
1995 E320 Touring
2001 Eurovan FOR SALE
1985 300D car, sold and missed.
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Old 06-09-2014, 04:37 PM
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168 with the pump maxed out, or just without the cat?

PM sent about the pump
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1987 300SDL s200g, Herlevi pump, Elbe manifold, 722.6 collecting dust - 185k
Past: 1987 300D - 264k
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  #4  
Old 06-10-2014, 12:24 PM
winmutt's Avatar
85 300D 4spd+tow+h4
 
Join Date: Apr 2006
Location: Atl Gawga
Posts: 9,331
Just without the cat. Found it in a euro FSM once.
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http://superturbodiesel.com/images/sig.04.10.jpg
1987 300D Sturmmachine
1991 300D Nearly Perfect
1994 E320 Cabriolet
1995 E320 Touring
2001 Eurovan FOR SALE
1985 300D car, sold and missed.
OBK #42
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