Pulley Kit - Mercedes Benz SLK Forum
Performance MODS for the R170 Tuning and Performance modifications for your SLK

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#1 Old 06-27-2006
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Pulley Kit

I fitted the ASP pulley and LinH's MAF relocation kit. etc to my pre2000 SLK230

Really worth the $$$

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#2 Old 06-28-2006
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Due that I don't have a 230 or even a 320....does the pulley kit actually make a large difference in your cars????
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#3 Old 01-21-2007
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Quote:
Originally Posted by tungster View Post
Due that I don't have a 230 or even a 320....does the pulley kit actually make a large difference in your cars????

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...
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#4 Old 05-31-2007
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How hard?

How hard was it to do the upgrade from ASP? any additional costs besides what you get directly from them in the kit? I think the website said about $650 for the kit right?
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#5 Old 08-12-2007
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how many differnt kits are there?
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#6 Old 02-21-2008
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Can't find any of these kits

Is there anyone out there who knows where I might find one of these pulley kits, all the posts are so old and they don't seem to be available anymore at the sites mentioned.

(98 slk230 stock presently)
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#7 Old 02-21-2008
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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
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#8 Old 02-22-2008
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Apologies for my ignorance... what is a pulley kit ... and what is it meant to do?
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#9 Old 02-22-2008
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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
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#10 Old 02-22-2008
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Thanks!

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)
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#11 Old 02-22-2008
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Quote:
Originally Posted by Gabus View Post
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
aha, so only works on turbo/supercharge/overcharge etc? Not my normally aspirated 350?
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#12 Old 02-22-2008
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Quote:
Originally Posted by maliqua View Post
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..... Together with a ECU mod, K&N filter I've gained 47 PS. ( or not me, but the last owner of my car)

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Originally Posted by richard_leeds View Post
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
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#13 Old 02-26-2008
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Originally Posted by Gabus View Post
Turbo's don'thave a pulley... and a pulley kit can't be used in your 350. But you can get a blower....
oops .. I'm showing my ignorance, that's what I thought you meant by "blower".

So a "blower" is a fan to blow air into the intake of a normally aspirated engine?

A pulley kit is a smaller pulley to increase the rpm of the bower?

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#14 Old 02-26-2008
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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.......
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#15 Old 03-02-2008
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Sorry to but in guys, but can this kit be used on the 200K, if not can anybody recommend one?
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#16 Old 03-05-2008
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pulley kit.What happens to the kompressor endurance?

I'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?
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#17 Old 03-06-2008
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Sorry to but in guys, but can this kit be used on the 200K, if not can anybody recommend one?

http://tinyurl.com/2urj72
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#18 Old 03-12-2008
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simple upgrade but more hp that a pulley kit...
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#19 Old 05-05-2008
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is there just a way to buy a pulley? I got a new belt and all the other stuff. I dont wana spend over 100 bc this is my second car (daily driver).
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#20 Old 07-07-2009
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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).
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