W203E35

That's over 1 bar. 20psi is pushing it. I honestly don't think the stock motor (m112) can handle anything close to a bar and yet 20psi.

can anyone chime in?

c32///

well one bar is about 14.5 psi, and the c32 which is an upgraded m112 is i think 18psi or so? so those upgrades wether cam shafts, pistons, pistons rod,..etc can no way be an excessive of 10 more psi if 8 is pushing safety. Plus mercedes will claim its lower max potential just to be on the safe side, but i dont know . Honestly im unsure, ill have to do some research when i get the s/c too.

W203E35

The supercharger on the C32 is 14psi and the engine's compression is 9.0:1 (keep in mind it has better internals too). People do a pulley upgrade and run into problems even with a tune. So if the m112 is 10.0:1 I don't think it's possible to run anywhere close to 20psi. not even a bar. But that's just my opinion.

Good read on the C32 http://www.insideline.com/mercedes-b...z-c32-amg.html

W203E35

This is from the link I sent you

c32///

, goood enough man thanks, but in reality im not going to run high boost cause i dont really care. what i do care about is, GETTING THE BEST PERFORMANCE WITHOUT COMPENSATING the engine(idontknow why i wrote tht in capitals) and as you said, 7-8.

c32///

it also says : The supercharger also features an electromagnetic coupling that allows the supercharger to disengage during partial load conditions. With the supercharger disengaged, the engine operates purely as a normally aspirated engine, thereby reducing fuel consumption, exhaust emissions and noise.

will that feature work in mine, does this also mean the c32 is a c320 at normal conditions xD?

W203E35

Lower compression is good for boosting.

Higher compression is good for NA engines.

That's why AMG lowered the compression and added better/stronger internals. My honest opinion is I don't think the engine can handle anything over 10psi. You might be able to do it but the engine wont last much. 7-8psi is what I would do to be on the safe side and to make the engine last.

Good Luck

OverDrive

With a full pulley system and pretty much all the mods that the c32 community can offer, i top at 23psi (Sometimes I throw a Check Engine, as im maxing out the boost Sensor) For a regular 320..... maybe 10psi, Also, your tranny is different than the amg's Sure it 722.6 (I think thats the number) but there is 5 different versions of it.... and ones for the amg classes as well.... You may get up to 320 or so, But the tranny will start slipping on a normal 320 tranny, Theres a guy on the fourms who boosted a 3.2 Inline motor off a w210 max psi was 10 before the tranny and motor started having issue (Tranny was the 5speed)

W203E35

^^^Good info

c32///

yeah thats what i wanna border at....safe/no problems -to- most potential power outta it.

TemjinX2

the ecu controls when the clutches engages and disengages. You can probably hardware it to a switch to be able to manually turn off and turn on the supercharger.

I believe hooleyboy did something similar with his e55 sc retro.

TemjinX2

eh just do it, if you can get it to work, you'll be a hero to all the c320 owners in there. If the engine blows up..then drop in a 2jz or ls2..lol.

c32///

the supercharger switch would be sick. Ill deff try that if i can get it to work. LOL, both ways im gunna try this im too eager. If i blow it, whatever...if it works those 3 series owners better watch out .

Anyways, thanks for the help guys and advice its really appreciated. Ill keep you guys updated, the supercharger should be coming in next week or the week after. again thanks for the advice!

W203E35

Now here is the problem. How do you control boost on the supercharger? There is no way he will be able to run the stock 14psi on the m112. How will he be able to lower his boost?

Thanks

OverDrive

Crank Pulley, Just make it smaller in size... Thus slowing the s/c down

hanknum

TemjinX2

a larger sc pulley or smaller crank pulley will lower the boost.

i_am_amused

return the s/c, skip the other mods, get yourself a 5 dollar Type R badge, and slap that bad boy on the back. Good to go!

You could spend fifty grand and still not have a C32, or you could spend less than $20K and have a *real* C32

omg its nate

I am guessing you dont have a c32 or else you would be putting money into that and not wasting it on the 320....

DrgnflyZ28

lol
Neither would I! Oh wait, too late

nrg_mike

Damn, this is similar to another post that was just up.
Most recommendations for the aftermarket supercharger on a M112 (non C32) include boost set at only about half a bar. Even the Kleemann kit comes at half a bar.

Again this becomes an issue of price vs benefit. The 320 won't run like a C32 will. I've had to come to that conclusion myself.
At this point, if you can get one, you mite as well swap something interesting into it. Twin charge it or swap it. Karo, got that E55 link handy? lol.

c32///

lmfao! type r on a four door sedan would look awesome, and for the c320 im not spending close to 2,000 for the whole engine mod... lets just see what happens

c32///

guessing? guessed wrong man, my c320 i just got to drive everyday. I dont wanna rack up miles on my c32 and my e500 just swallows gas...

c32///

yeh i saw the e55 swap...idk maybe i just save up for a c32 engine and swap that...an e55 is too much gas for me..i learnd that i shouldnt go over 5litres

W203E35

The E55 probably uses less gas than the E500.

Edit:

E55
13/19

E500
16/23

C32
15/19

Don't worry about gas do the E55 swap

Whatever you decide good luck