Smaller S/C pulley boost question
Thread Starter
MBWorld Fanatic!
Joined: Jun 2007
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From: Socal
07E63, 12E350, 08997TT, 16SiennaSE
Smaller S/C pulley boost question
I have a Kleemann Eaton root style S/C with a 2.8" stock pulley that make 6.2 psi of boost on a cool day. If i put in a lighter (half the weight) 2.6" pulley, how many psi should I be making? 
thanks
thanks
Thread Starter
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,856
Likes: 7
From: Socal
07E63, 12E350, 08997TT, 16SiennaSE
So I have 4 extra if you know anyone who want to buy it off of me. I can't believe how heavy the stock pulley was.anyway, i had it installed last night. but i only seeing a 2 psi increase on my boost gauge. I hear other saying a 65mm will make 12psi, I don't know if this depend on the car or is there somthing wrong with my S/C
MBWorld Fanatic!
Joined: Dec 2005
Posts: 2,347
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From: So Cal
2006 Weistec 3.0L SC'd C55, 2006 MaxPsi PT6466 Turbo'd M3, 2019 Maserati GTS , 2020Alfa Quadrifoglio
I had a machine shop CNC a 2.6" out of aircraft light weight aluminum for me but I have to buy 5 in order for them to turn on the equipment So I have 4 extra if you know anyone who want to buy it off of me. I can't believe how heavy the stock pulley was.
anyway, i had it installed last night. but i only seeing a 2 psi increase on my boost gauge. I hear other saying a 65mm will make 12psi, I don't know if this depend on the car or is there somthing wrong with my S/C
So I have 4 extra if you know anyone who want to buy it off of me. I can't believe how heavy the stock pulley was.anyway, i had it installed last night. but i only seeing a 2 psi increase on my boost gauge. I hear other saying a 65mm will make 12psi, I don't know if this depend on the car or is there somthing wrong with my S/C
Thread Starter
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,856
Likes: 7
From: Socal
07E63, 12E350, 08997TT, 16SiennaSE
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MBWorld Fanatic!
Joined: Dec 2005
Posts: 2,347
Likes: 1
From: So Cal
2006 Weistec 3.0L SC'd C55, 2006 MaxPsi PT6466 Turbo'd M3, 2019 Maserati GTS , 2020Alfa Quadrifoglio
The good part about your SC kit is it makes instant power in the lower RPMs, easier and cheaper to repair and less likely to break since the lobes/rotors tolerances are not so tight. If my SC breaks, it would be much more difficult to service than yours.
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From: S.E. FLA.
05 ML-500 , 03 CLK5.5 AMG has left the Garage
Blower pulleys
Peter : Here is the guy I go to for pulley's & he stocks them. The outher issue with using a small Diameter pulley , is that you lose belt wrap. and Belt slip % may increase http://www.southfloridapulleyhq.com/...ed_pulleys.htm Cheers _PTEngineering
