Xeon

Hi all,

I went to RB tech today to get my crank pulley fixed and repair my car.

They did the following for $750

Painting of my damaged front bumper
Repairing my dented fender
Painting of my chip door handle
Painting of the lower grill ( i don't know what you call it, the centre piece betwen the 2 fog lights)

Fixing of ASP pulley

Changing the fuel settings
Changing my fog lights to 100watt hella

Tinting my car

................

Also, the boss there (ralph) asked me why do i change the crank pulley instead of the supercharger pulley. He told me that there is an upgrade option based on the SLK, which runs to about $1200 and increase our hp to around 250.

That shop is just opposite downtown la mercedes, and ALWAYS have gorgeous cars there. I saw a bently, new clk, g wagon, lorinser c coupe and tons.....

Saw pics of the new SL and ferrari 360 which they mod.

Scylas

?

Xeon

downtown LA

It is quite a good shop...you can see from their customer base

who_dog

Do we have the same supercharger as the SLK?

renncpe

The reason that nobody else uses the S/C pulley it's not a good solution. There were many problems with that aproach, I would stay far away from that one. The claim of 250 HP is total BS also. There is not that much headroom left in the stock S/C. With the crankshaft pulley you are all ready close to the max rpm range for the S/C there is no way to get 20 HP more by spinning it faster.

Buellwinkle

He's probably reffering to the DSR pulley/GIAC chip for $1,100 for the pre-2k SLK230s. It does provide more boost than crank pulley kits, combined with the chip it can easily approach 250hp.

renncpe

It does not work on the 203 C230K. And you would be the first to point out approaching 250 HP is not 250 HP, right? My point is correct for the C230k 203. You will not get 250 HP from any pulley kit.

Buellwinkle

That's why I said pre-2k SLKs and not C-Coupe. And why not approach an advertised 250hp. If you some tuners, not Renntech, can claim 238HP from their pulley kits and you add a chip to that and the fact that the DSR pulley spins the s/c faster than some crankshaft pulleys for more boost, why not advertise 250hp. Reality is another thing and hp at the wheels is another thing. Realistically from several dynos I've seen on a stock coupe with an alloy pulley (no muffler/intake/chip/intercooler/other/ecu stage x ) is 192rwhp or about 226hp. Add to that a chip and 8-12 hp is possible so at best it would be 238hp. But 238hp real vs. 250hp advertised, that's seems normal for me, afterall K&N advertise big hp gains for their filters and reality is maybe 2-3hp.

Of course add an intake, muffler, intercooler and 250hp+ can be a reality.

renncpe

Ok.... 250 then. but not from just a pulley. pulley>chip>cams>headers>intercooler>injectors>fue l pump>32 degree run at sea level>CIA

Or cahnge the supercharger to a M62>intercooler>chip and 275 HP

Buellwinkle

I like the simple but elegent Mitsubishi turbo that Benzy's mechanic did for 314 rwhp.

TimmyC230boy

didnt that engine blow up?

Buellwinkle

Benzy blew it up with NOS and his mechanic bought it from him and he repaired and replaced the s/c with a turbo. Turbo is the way to go for real power, you can only do so much with that Eaton M45 (even the M62 won't get you more boost). You can try a better more effecient s/c, not Eaton, maybe the MB one from the '03 coupe (11 psi).

renncpe

I think that might be pushing it to hard I don't want to blow it up in a week. What is he running 22 lbs of boost? There are a lot of systems to work around changing from the S/C to a turdo. He may end up in limp home mode more than one or twice. The only limit is how much cash do you have

Buellwinkle

Hangin with Vin Diesel types doesn't come cheap!

Outland

Why not? With the C230's stock SC only running like 5psi(at least that's the figure always quoted here) of boost, and still making nearly 200hp, I really can't fathom why you wouldn't be able to get to 250 with more boost...sure, youre gonna reach a point where the heat overcomes the intercooler.

Even still...230HP is nothing to be ashamed of. That's got to be enough to shave at least a half second or more off the C230 1/4 mile time. MB should have made them with enough HP to easily smoke the competition...they would have not been able to build enough of them if they had!

Buellwinkle

Actually the problem with the Eaton M45 S/C is that the power required to generate more boost is greater than the power generated at some point. Also the impellers lose effeciency above a certain speed. Heat is an issue but not as great as the other two as many cars run fine on twice the boost. On the older SLK230 and C230K sedans there are a few pulleys that are considerably larger by as much an 1" than what would fit in our coupes. With those pulleys, people have had problems and had to chip their cars for them to run right so I think we have a good balance forced on us by space constraints. But I'm happy with the power, it allows me to shift less and have more fun driving.

After the pulley, the next best bang for the buck is going to be a chip then possibly a larger intercooler.

goalie_k

RB tech is an awefull shop. If you want 22" wheels on your C Coupe go there. If you want serious performace go elsewhere.

Buellwinkle

I just found something interesting and maybe I'm wrong but here's the deal. ASP makes a pulley for the Eaton M90 on the Pontiacs but the pulley is pressed on like on our cars. They then sell a special pulley remover/installer to deal with the pressed on pulley. Someone with an '03 really needs to call Lee and talk to him about it as this would solve everyones problems and the pulley is likely to only cost about $100. Whoever calls, let me know what comes of it. I know some tuners justify their crank pulleys by telling you that a smaller s/c pulley is not possible, that's not true, it's done all the time on other cars.

benzy230

haha....yes...it did cost a pretty $$$ but i was curious how much this car could be pushed. If i had it to do over again i would have gotten with about 2-3 different companies and would have seen what we could have come up with..it would had been alot of efficiant...but at the time..no one was really doing much...

linh

The DSR pulley increased boost to 11.5 psi vs Kleemann crank pulley only increased to 9.5 psi. Remember, for every 1 psi of boost, you gain about roughly 10 rwh. So it possible to get 250 hp.