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1992 SL300-24, 1998 BMW 750iL
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701 Posts
Discussion Starter #1
Hello

I know im going to be put at the stake here but here it goes...
Im planing to convert my R129 to run a supercharger setup, as far as im aware...the 98-2000 SLK's came with an Eaton M62 while 2000+ came with an M45 supercharger which is common with the Mini S....My car is an M104 inline 6 3L engine

My question is...some of the superchargers fit on both 4 cylinder and 6 cylinder models from a 2.3L-3.2L displacement engines...if i ran with a supercharger from a 4 cylinder, would the efficiency decrease due a bigger displacement from what the supercharger was intended to work with?
 

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82 380SL 96 SL500 03 SL500
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6,161 Posts
Either would probably be fine, but the big issue will be the pully sizes to spin the supercharger at the appropriate rpm for your application. OTOH, what would I know.

I'd go over to the 170 and 171 forums for a perhaps more studied opinion.
 

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Registered
1992 SL300-24, 1998 BMW 750iL
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701 Posts
Discussion Starter #3
already did...here is what i got
"Yes, you will have to spin the smaller supercharger higher to achieve the same hp increase compared to the larger supercharger. Alternatively, you can look for a used M90 from a Jaguar."
 
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