machine down the code3 pulley smaller?
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
So it can be done!
Great to see that a 68mm SC pulley combined with a 178mm crank pulley will run just fine.
I have a 65mm SC pulley and plan on going to 170mm crank pulley. The 60mm/180mm is just too much boost for me.
I have a 65mm SC pulley and plan on going to 170mm crank pulley. The 60mm/180mm is just too much boost for me.
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
What's the PSI for your 185/70 on your IHI OEM setup? My formula shows that if it's a 2.0 litre SC, it would yield about 14psi which is almost the same as a 170/65 configuration. Correct?
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MBWorld Fanatic!
Joined: Dec 2007
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From: Corona, CA
03 g35 coupe...........02 c32 Sold
i stock c32 runs at 14.5psi. The 178mm crank pulley you run around 17psi. Most people with 185mm usually run about 18-20psi. So i'm guessing i'm running closer to 19-21psi. I have the stock intake which limits the boost.
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
I never realized how much boost this OEM blower puts out. What's the size again? 1.8litre right? Stock compression on a C32 motor is 9.0 to 1? These AMG blocks are solid to be able to hold 20psi without a problem.
Thread Starter
MBWorld Fanatic!
Joined: Dec 2007
Posts: 5,034
Likes: 6
From: Corona, CA
03 g35 coupe...........02 c32 Sold
The stock map sensor maxes out at 22psi. I'm confident the sc can go higher if it wasnt for the map sensor. But then after 22psi...the stock intercooler can't cool the air well enough so you start getting diminishing returns.
If someone can figure out a way to design a more efficent intercoolor or convert it to a top mounted intercooler..it'll probably yield more hp then running anymore psi.
Thread Starter
MBWorld Fanatic!
Joined: Dec 2007
Posts: 5,034
Likes: 6
From: Corona, CA
03 g35 coupe...........02 c32 Sold
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