Supercharger pulley sizes to psi
Thread Starter
Senior Member
Joined: Jul 2007
Posts: 268
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From: Long Island, New York
2002 Clk430
Supercharger pulley sizes to psi
Hey whats up i usually post over in the w208 section, but knowing a few of you guys are running either the mp90 or mp112 superchargers on your cars i figured you guys might want to know about this site i stumbled upon while researching the hps gen1 kit.
www.boost.xu1.net
just plug in what charger you hav, size of your engine, s/c pulley size, and lower pulley size and itll giv you the psi. dont know HOW accurate it is but its gotta be in the ball park
www.boost.xu1.net
just plug in what charger you hav, size of your engine, s/c pulley size, and lower pulley size and itll giv you the psi. dont know HOW accurate it is but its gotta be in the ball park
Super Member
Joined: Feb 2008
Posts: 647
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From: The Land of Blondes...
2001: Supercharged E55 AMG
Yes, that quite 100% in the ball park! 
But you have to type the S/C and Crank pulley diameter in MM not Inches like it says on the page to make it work.
Cool stuff!
But you have to type the S/C and Crank pulley diameter in MM not Inches like it says on the page to make it work.
Cool stuff!
Member
Joined: Jul 2008
Posts: 85
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From: NYC, USA
2 W210 E55, CLK 63, S65, Infinity Qx56, Taurus SHO - all heavy moded, Porsche Cayenne Turbo stock
I wonder what is a diameter of our crancshaft pulley and also what type of the SC old Autorotor is closest to?
Super Member
Joined: Feb 2008
Posts: 647
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From: The Land of Blondes...
2001: Supercharged E55 AMG
And the old Lysholm/Autorotor was made in Sweden, and it's a twin-screw S/C, think it's 2,2 L/R (Liter per revolution)
Now they are called JM:Tech and make the S/C in the Kenne Bell set-ups, twin screw S/C.
Kleemann changed from Autorotor to Eaton MP112 Gen 5 Radix made by Magnuson back in 2007 i think. And the Kleemann/Eaton S/C is not as bad as some say. Bigger outlet anf bigger inlet.
I think people are mixing the Eaton M112 up with the older Generation M112 that where in the 2003 Cobras and Ford 150 Lightniing. I'll show you a comparsion below.
MP112 (Kleemann) Vs Old M112 (Cobra,Lightning)
