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Pulley Kit

48K views 35 replies 25 participants last post by  Sweet04 
#1 ·
I fitted the ASP pulley and LinH's MAF relocation kit. etc to my pre2000 SLK230

Really worth the $$$ :D

Bazzle
 
#3 ·
remember that the 230 is a 4 cylinder supercharged engine, so a pulley kit on the 230 is like adding a pulley kit on the 32'..... it increases Boost levels. So a 25-40HP gain is easily obtained. On the V6 320, when adding a pulley kit (i have it...evosport) all you are doing is "underdriving" the crank pulley, alternator & waterpump).... it shows 10hp gain in the dyno in the REALLY low rpms.... (1-3K), so is the kind of power gain that will make a little difference & after that you just get used it...
 
#7 ·
Go to ASP Racing

http://www.aspracing.com/frame.htm

.. and then under 'street pulleys' select 'Imports'. Scroll down to Mercedes and you'll see the kit for a '98 - '00 C230 (includes pulley, MAS relocation pipe, plugs, fuel pressure regulator and belt). It should fit a 98 SLK. I had a similar kit on my '99 (from Linh) and it worked great. A little pricey @ $1,200! Kit #ASP331320
 
#26 ·
I have to apologize but I am not familiar with the Ps/NM language. How much HP do you think can be picked up by one of these kits? I went to the site and seems like the company's link is not up anymore to the kit's but they are able to be contacted so I am sure they can still get the kits.

Thank You.
 
#9 ·
Hi Richard

In short you put a smaller pulley on the blower to increase it's rpm. By doing that you increase the blowpressure which gives you more omph........
I have a kit on my '96 230K together with some other stuff, and it reads 240 PS/350NM on the dyno :rb
 
#12 ·
Awesome Thanks
any idea what type of HP increase one would see with that kit? it doesn't list it on the site..


Either way if it's more than 5-10 it's worth it i figure (and it's an easyish mod to get me started)
You would gain over 10 PS easy......... But when you compress air you get heat, so you should also consider a bigger cooler.....:tu: Together with a ECU mod, K&N filter I've gained 47 PS. ( or not me, but the last owner of my car)

aha, so only works on turbo/supercharge/overcharge etc? Not my normally aspirated 350?
Turbo's don'thave a pulley...;) and a pulley kit can't be used in your 350.
But you can get a blower.... http://tinyurl.com/2stuxe :bannana:
 
#14 ·
Not exactly a fan..... It's an air compressor also called a blower or a supercharger

http://tinyurl.com/2vwgsq

By increasing the RPM's of the compressor you force more air into the motor. To get more RPM's you need a smaller pulley on the compressor or a bigger pulley on the crank, or a combo of those two. I've think I read somewhere that the compressor in the SLK 230 can take about 16000 RPM's

By putting a compressor in the SLK320 AMG gained 136PS/140NM which became the 32AMG.......
 
#25 ·
Not exactly a fan..... It's an air compressor also called a blower or a supercharger

http://tinyurl.com/2vwgsq

By increasing the RPM's of the compressor you force more air into the motor. To get more RPM's you need a smaller pulley on the compressor or a bigger pulley on the crank, or a combo of those two. I've think I read somewhere that the compressor in the SLK 230 can take about 16000 RPM's

By putting a compressor in the SLK320 AMG gained 136PS/140NM which became the 32AMG.......
The ASP pulley for a 230 is a larger diameter pulley then the standard pully. There is no crank pulley in the kit, just one hugh pulley for the supercharger. The kit is designed to take the Supercharger to 12000 RPM giving around 8.5 psi boost. 12000 RPM is well within the design specs of the eaton supercharger in your car.

The pulley also weights more then the original pulley which means when you take your foot off the accelerator, the car does not loose RPM quickly. If you fit an alloy pulley that is lighter then standard, then you end up with a car that will rev quicker, but will also loose RPM very quickly when your lift your foot of the accelerator, which makes the car very hard to drive. This does not happen with the ASP pulley as it is heavier then standard and when you take your foot of the accelerator the car just keep going at the same RPM and there is no sharpe drop in RPM.

I have the ASP pully and love it, and I have had it for over 3 years now. Before I got the pulley, I was always having to press the accelerator to the floor to get the car moving (I have a 2003 model 230) but after the pulley was installed, I almost never need to do this. The increase in power is hugh.

The ASP pulley is done on exchange. It's $US350 + $US300 deposit, which ASP refund to you when they recieve your standard pulley in the post.

This is the only mod I have seen that will give you a hugh increase in HP for a few hundred dollars. you would have to spend many thousands of dollars to get the same result on a non-supercharged car, like the 320.

My car easily leaves a 320 behind, I even took off the SLK230 bagdes so people do not think I am driving a slow SLK230. Let face it a standard SLK230 is a slow car,otherwise so many people would not be interested in modifying it.

Cheers
Luc
 
#16 ·
pulley kit.What happens to the kompressor endurance?

:sBannana2I've heard of some stories about kompressors that blow up after using pulley kit since the kit increases kompressor's rpm .
Does anybody know anything about it? I don't want to put the kit and after a month to pay for a new kompressor unit!
Is there any guarantee from kit providers?
 
#20 ·
There is no guarantee. By increasing the RPMs you are, by definition increasing wear and tear. However, any power upgrade, even if done my the factory themselves, has this "feature". What you want to know is whether this increased wear will cause the car to fail sooner than it was designed. A pulley upgrade that adds this little power to a motor this well built, if installed properly is very unlikely to cause an owner any problems. However, you should be sure that your motor is in good working order before doing so.

As for not buying a new belt, you will see very quickly that you will need a new belt. By reducing the size of the pulley, you are reducing the length that the belt must span to go around all of the various pulleys. If you put the old belt on, which would now be too long, you will have a bunch of slack. This will cause certain items in the engine to not rotate as they should. That's a pretty big problem.

As noted earlier, increased pressure begets increased heat. Improving the cooling of the intake charge (intercooler) will remove some of this heat and add some power (a couple of hp).
 
#24 ·
Well done Gabus, you explained it all, and you have a brillant car

just to think between 320 and 32AMG, they had to reinforce several parts inside the engine

and when you get this power, you need to work on the breaks and wheels, shock absorbers . . .
 
#35 ·
Anyone have any idea how to get more power? Did the Remus exhaust with resonators yanked and cat will be gone this weekend. Removed factory airbox and made my own CAI with a K&N cone. And am going to get this ASP pulley. End of the road?! What about the AEM FIC Silk talked about. Its universal. Anyone tried it on their SLK 230? Need help. I want to max out this little engine that could.
 
#36 ·
Four years later and a reliable source for a pulley that will hold up and be readily available has not happened, what's up with that? There certainly is a market for these pulleys. So nothing from another application fits. A pulley kit would likely be needed to obtain the correct belt wrap. An SC pulley that is over $500. Does not fit the critteria. Well?
 
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