[V8] v8 supercharger
quattro
allanvega at adelphia.net
Wed Feb 16 23:59:37 EST 2005
Im leaning more towerds the sc for several reasons. 1.) lack of low end oomf from the 3.6. 2.) cost and complexity of turbo charging the 3.6 motors. I think juston was right on the money when he picked the m-62 for the 3.6.The sc im considering is a variant of the m62 from a mercedes http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7954780067&category=33741 as you can see, it has an elecrtic clutch that can be wired up in a variaty of ways. I am considering mounting one of these in the a/c compessor location.so far my research has lead me to believe this sc to be good for 300+ hp @ 4 psi. At the very least, I would need to use the abh fuel injectors as well as the intake.
----- Original Message -----
From: DasWolfen at aol.com
To: CoultL at aol.com ; allanvega at adelphia.net ; v8 at audifans.com
Sent: Wednesday, February 16, 2005 11:19 PM
Subject: Re: [V8] v8 supercharger
In a message dated 2/16/05 10:39:48 PM Eastern Standard Time, CoultL at aol.com writes:
Sure link is: www.CoulterLewis.com. I have not changed the info on the site for a while. I never finished the supercharger development as money, time, and patience ran short before I could figure out the inadequate fuel system problems. I am happy to answer any questions to the best of my ability. I understand some listers are working on a intake manifold mounted supercharger...which would be much better. To me, though, the whole supercharger thing is very flawed. Something about all the power lost to running the compressor...
An Eaton M90 S/C only requires 16 hp at 6,000 rpm at 5 spi, 38 hp to spin to 12,000 rpm at 5psi. Thats not a lot considering the tremendous torque increase in the low and midrange at that same 5psi. While its true that turbo's are potentially capable of more HP at the wheels they can never match the seamless power delivery of an S/C, particularly in an Automatic. To come even close to the low end torque potential of an S/C requires a very small turbo which in effect creates a large plug in the exhaust invisibly stealing HP and restricting top end power in its own way.
(note: A properly setup Eaton S/C takes about 1/3rd of a hp to spin when off boost cruising. A small turbo can steal about 5hp in the same situation.just from the restriction in the exhaust..a pretty substantial hit to normal fuel milage)
To my mind which direction you choose should depend on what your overall goals are. If your goal is the most hp, by all means, go the turbo route. If your goal is flexable power in traffic and instant seamless power delivery with bunches of low/midrange torque, an S/C is the way to go.
Keith
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