C230 Sport Coup

So, after a couple years of pully-less operation, I finally got this
thing re-installed. Wow. I forgot how much a difference it makes.

I originally removed the pulley because of a too lean error,
thought perhaps it was related. No.

Then, due to exhaust leaks, thinking my Remus was the issue, I had it removed.
Turned out to be the damn resonator I had put on, as cracked open on a seam.

Lastly I also removed the Super Sprint header, because at 234K miles and nearly 15 years of ownership,
I'm tired of sweating bullets at every smog check.
They never said anything, and there is a # stamped on it, but no idea it has anything to do with CARB.
So, pulled that too. Wow, then it really lost it, no throttle response hardly, and without being at high rpm,
it was just doggin' it.

So, I have to say, I like the quieter operation, without the Remus and header but after all that the power was way down.
So, finally after this last go around with smog, and finally getting all my various issues resolved, time to put the ASP BACK!

Wow, what a difference. A completely different car, and with the SC muffler removed, which I did a long time ago, it really howls!
I do miss the almost instantaneous response from the engine I got with the header on, it does make a difference,
but I don't miss the noise on longer trips.

Falling in love all over again!

DACHIGGA

That's good to hear. I don't think love the coupe as much without the pulley. Can't wait to get the headers installed

LexBrett2

It's no turbo whistle!!

redguitarfreak

I want one. Are these things still available at all?

LexBrett2

Have searched endlessly to no avail for a pulley kit for my 2005 1.8L Sport Sedan...

C230 Sport Coup

ASP will make one for you, but the engine runs out of fuel at ~5K rpm.
Kleeman makes, or made something called the K box which tricks the engine into
pumping more fuel....there's some old thread on this around somewhere.
Kbox is stupid expensive....
Reason for all this, is that the M111 with M45 the M45 is not running at full capacity,
so some smart people figured out exactly how much air it has the capacity
to pump and at what rpm etc. and then made the pulley the correct diameter to do so.

M271 M45 is ALREADY at full capacity, so with a pulley it's spinning beyond it's limit...
but even so, Kleeman did have a full kit for like 2 grand or some nonsense.
Solution? Trade your 2005 for a 2002.
ha!
Update your grill, lights and tails, try not to notice the non-facelifted interior, and enjoy
the additional power. I've driven both. Lot of loaners.
M271 has a very narrow power band, and absolutely sucks **** going uphill,
just maxes out and thats it.
M111 with a pulley is just awesome. Period.
Pulls like a small V8 and sounds like an F16, but downside is it sucks the gas too.

LexBrett2

pully kits for my car are not available anywhere! Have emailed every company on the planet

C-house

Hi you can maybe look at these guys i don't know how the quality is as i dont see a lot of info. I am saving up for one for my coupe but as shipping it to South Africa is a bit hectic it will have to wait a bit until i have the funds.

http://www.ebay.com/usr/ibf-auto?_trksid=p2047675.l2559

C230 Sport Coup

If you send a stock pulley to Lee at ASP in Texas, he can make it for you.
It's been done.
Price is about $350 to get the ring pressed on, and I dunno, $250 for a pulley?
But like I said, car will get to 5K rpm and just stay there..stuttering....
Kbox resolves this...for like a grand.
there are threads on this from like 10 years ago.

Kleeman made a kit too.....theirs worked but included the Kbox, pulley and Kbox were over 2 grand. Do they still them? No idea.
http://catalog.kleemann.dk/catalog/c...0200230k-m271/

K Box seems to come up for sale occasionally,
call Kleemann USA in Colorado to see if there's any chance in hell of getting one
for W203 M271.

LexBrett2

i saw those too, but wonder about figment and quality. Nobody I know has used this pulley. Also took a look at the install instructions and it looks damn near impossible

LexBrett2

i emailed ASP a couple times and they said they did not have a pulley for my car. Emailed Kleeman and they said no more Kbox.

now that I'm running a 50 shot of nos, along with full exhaust, an Ecu tune, sway bars and shocks, tires, shocks, sprint booster--- I'm done with performance mods. No check engine lights or codes.. But, damn, I wish I could slap on a new pulley

RedGray

Hmm, you're definitely not looking to do "worthless" mods.
Did you fully read what C230 Sport Coupe wrote.
????


Please read the following thread:
https://mbworld.org/forums/performan...5-porting.html


A few quick things:
For an M271:
1) A crankshaft pulley change is foolish.


2) You can get a 62mm pulley for the M45. (You can get it from ebay, or have Stiegemeier get one an put it on with a rebuild).
You will NEED:
a) To have the pulley professionally removed and installed.
b) ECU tune
c) A boost sensor that can read a higher boost
d) A better/bigger inter-cooler
e) You should also get the M45 professionally rebuilt and ported. I suggest Stiegemeier Porting Services. That's where my 100% brand new M45 is right now. Note, I'm not going to a smaller pulley.
Figure ~~$1,700 for a rebuild, m45 port, throttle body port, and s&h both ways.

Without b, c, & d, you will loose HP. People and companies have done many tests. It always comes out the same.



3) For your exhaust, it should be coated.
Loosing heat from the exhaust is like loosing HP. You want to keep the heat inside the exhaust system, to keep the exhaust flow speed up. The better the exhaust flow, the more cylinder exhaust gas scavenging, and intake charge "vacuum-effect".
Imho, the best is:
V-136Q Cerakote Coating Piston Coat
http://www.cerakotehightemp.com/fini...oat-oven-cure/

That's what I'm having done now to my Kleemann headers, and the outside of the primary convertor.


I know that I won't get a big HP gain. That's fine. I'm looking for 200.1 HP at the engine. For my pull-it-from-my-rear specs for a sports-car verses a sporty-car, I say 200+ engine HP for a car that weighs about what the 2002-2005 C230K weighs.
The other mods for my pull-it-from-my-rear sport-car specs are doable for my 2005 C230K, and in progress, or will be done in ~1-2 years (haven't decided on when I'll do the tire/rim upgrade).


And yes, I do put my money where my mouth is.
I've also been doing car mods/etc for a few decades.
Anyone else ever run an intake with "dual quads" (two 4-barrel carburetors)? Ah, yes. Cheaper HP back then. Especially with going to the car-parts swap meets for parts.


Btw, who the ******** put a toothpick for a rear anti-sway bar in the C230K!?!? Yikes! If a leaf fallen from a tree hits that thing, it'll snap it in half. ;-)


Btw #2, for the 62mm M45 pulley, on ebay, search for: Mercedes smaller supercharger pulley M271

LexBrett2

Hey Buddy,
Thanks for the post. Not sure if you are saying my mods are worthless or not? And yes I carefully read through the other post.

It has definitely been trial and error with my mods, and I'm no professional. If I were to do it all over again I would not have messed with the exhaust. Time, hassle, codes, cost, and little gain. Suspension mods and NOS are awesome though!

RedGray

Nope, I'm saying that your mods are not worthless.
In other words, your engine mods are for more HP and response.

Imho, for better handling, the C230K definitely could use better (bigger) anti-sway bars!

As for the springs, imho, for handling, the C230K sport is already low enough.
The C230K sport could use stiffer springs for handling.

For looks, lower springs are a personal choice.

Imho, for braking and also handling, the C230K could also use better brakes (e.g. C32 AMG brakes) and wider tires (go to 18").

Tires are again a personal choice/need.
I use Summer-Only Ultra-Performance Tires on my Mustang. It's not my only car, nor is it driven in the winter.


I didn't buy my 2005 C230K as a daily driver. It'll be my second/backup-car - used in good weather.
My C230K was never driven in the winter. I want to keep it like that.

LexBrett2

If you are looking for bigger sway bars, try a set from H&R. I installed the pair myself, and it's a huge difference in handling. Everyone who drives my car is shocked.

RedGray

I've already got the parts that you suggested - H&R sway-bars for both the front and back.
I'm glad that you like them, thanks for the feedback!


There's a decent thread on the sway bar options for a W203.
http://www.benzworld.org/forums/w203...sway-bars.html

There are a few inaccuracies in the thread. Still, it *is* a good reference.
For one thing, sway bar diameter is only one factor in the stiffness of a sway bar.

Many people suggest using the Eibach sway bar in the back, and the H&R in the front.
Imho, that would be too much for the rear and cause over-steer (in general that's very bad!). *I* care about handling - not drifting. Also, a too big rear sway bar would further reduce the effectiveness of the independent rear suspension.



Without good/experienced AutoX or HPDE W203 C230 drivers and their knowledge, I made my best guess/estimate of which sway bars to use.
I made my guess based on "similar" cars (weight, rwd, hatch-back (like my coupe), etc), I went with the H&R sway bars.

LexBrett2

Glad your on the forum and enthusiastic about your car. These cars are a blast to drive IMO, but all I see is complaining lol

C230 Sport Coup

There was guy who went ***** out, put the pulley, Kbox, tune,
bigger injectors, header...exhaust the whole ball o wax.
Named Jose, thread are all 10 years old...not sure what his username was....but he also never fully explained exactly how he got it all to work.

Lee absolutely made a pulley for this car, BUT there was some
flap about people complaining to him after the fact. I mean, someone sent him a pulley and specs and said "make this"! Which he did...but it wasn't like it was developed and tested on the car...people who tried it had fuel starvation problems. Kbox fools the ECU somehow into working.
Or maybe an ECU tune? So maybe after the complaints and problems he said f' it.
Wasn't his fault!

Damn near impossible?
What are you referring to? Just swapped mine (for like the 10th time, since every time I took it in for warranty crap I had to take it off ) ...whats the impossible part?
Kleeman is (mostly) good stuff, though avoid their bolt on rings (M111)
and there crank pullies don't have the rubber dampener,
and there was a whole lot of discussion on that,
baaaaack in the day. Gawd, my car is going to turn 15 this year. Mfg 12/01 You wouldn't know from looking at it,
and fairly consistant applications of Lexol has kept the leather intact.
Still a nice car to drive.

Teenagers!

C230 Sport Coup

Regarding sway bars...
I originally had AMG bars front and rear.
It's only like $200 for both! But the car was still understeering, a
Mercedes 'trait'.
I did some reading on sway bars...
Understeer, you either go thicker in the rear, or thinner in the front.
vs versa for oversteer.
So I put the HR 19mm rear bar on and oversteer resolved! Difference was immediately noticeable on
local mountain road (Highway 9)
Post stock originally had Vogtland springs, but when the shocks went, got
CO's. Rides very stiff! Shock gone again, and all suspension needs updating, but
we all know that costs$$$. Supposedly the shocks are rebuildable, but after reading it seems,
everyone who's tried it, got a quote for almost $1000. And they charge $50 to do an estimate
and return postage. Plus, I guess you'd need to go back to stock while you waited the
months it takes for them to repair them. Wow.. How screwed eh?
Likely next thing will be new control bushings. I heard one pop recent, I f'd up on the jack placement...Doh!

LexBrett2

Oh I just meant the supercharger pulley on eBay would be a very difficult install. So you mentioned you are going to change out your control arm bushings? I have new shocks and sway bars-- anything else on the suspension I should check? Do you know of any DIYs for motor mounts for the 1.8l??