Hennessy or Asp pulley on cls55

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May 22, 2006 | 05:01 PM

rflow306

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From: Mia

2005 E 55

Hennessy or Asp pulley on cls55

Has anyone tried the asp or Hennessy Pulley on a cls55 ?. I know this is the wrong forum but it's the busiest.

May 22, 2006 | 08:22 PM

Fikse

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Ever read the stories about Hennessy ripping their customers off for thousands of dollars.... even the major magazines reported about it....

Quote:

Originally Posted by rflow306

Has anyone tried the asp or Hennessy Pulley on a cls55 ?. I know this is the wrong forum but it's the busiest.

May 22, 2006 | 08:28 PM

dragonAMG

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Quote:

Originally Posted by Fikse

Ever read the stories about Hennessy ripping their customers off for thousands of dollars.... even the major magazines reported about it....

With all the positive Kleemann and Renntech reviews, why would anyone that frequents this board go with anyone else?

May 22, 2006 | 11:49 PM

Ted Baldwin

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.............I have the Henessey pulley in my G55 K4. latest dyno is 506HP and 531lbft of torque to the wheels. That adds up t 670HP and 706lbft of torque to the crank using a 25% drive train loss for big 4x4. The advantage of the Henessey pulley is that it is a larger pulley and generates higher boost. The pulley upgrade is not complicated and in my humble opinion no one company has a secret sauce. what is important is that you need a fulley dampened pulley so that your set up remains harmonically balanced.

Ted

May 23, 2006 | 03:30 AM

E55 RUSS

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E55K

I thought you have ASp pullies yourself...It works good ???

Are ASP pullies harmonically balanced ??? Thinking of getting them...

May 23, 2006 | 08:53 AM

ima55r2

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The ASP pulley is a modified MB pulley and therefore has the damper. I read that that you used to be able to send your original pulley for a core credit but I don't know if they still do it.

May 23, 2006 | 09:26 AM

BlownV8

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Quote:

The ASP pulley is a modified MB pulley and therefore has the damper.

Are you sure about that? ASP machines custom pullies and will do any size you want.

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May 23, 2006 | 03:45 PM

BlownV8

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Quote:

The pulley is a modified stock pulley so it is harmonically balanced

Are you sure it's a modified pulley or is it a custom pulley that mounts to the existing harmonic balancer?

May 23, 2006 | 04:09 PM

#10

rflow306

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From: Mia

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Quote:

Originally Posted by BlownV8

Are you sure it's a modified pulley or is it a custom pulley that mounts to the existing harmonic balancer?

They definitely modify the stock one. The factory balancer and pulley is a one piece design. They machine or cut out the supercharger section of the pulley and then re-install a larger section. It looks to be a press fit which is then tack welded for extra security. Then it looks like they re-balance the entire assembly.

It doesn't look as nice as the klee or renntech but it works great.

May 23, 2006 | 04:36 PM

#11

BlownV8

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Ok, yeah that's what I thought. They machine another pulley and attach it to the stock harmonic balancer.

May 23, 2006 | 04:42 PM

#12

ima55r2

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This is what you get for the ASP kit and the link is for the dyno.

https://mbworld.org/forums/showpost....4&postcount=20

Attached Thumbnails

Hennessy or Asp pulley on cls55-asp_e55-2-.jpg

May 23, 2006 | 05:54 PM

#13

Ted Baldwin

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Quote:

Originally Posted by ima55r2

This is what you get for the ASP kit and the link is for the dyno.

https://mbworld.org/forums/showpost....4&postcount=20

...........For the AMG V8K engines ASP, Kleemann, Brabus, Hennessey, Carlson, MKB etc all modify the crankshaft pulley by adding an outer ring to it. The diameter of the outer ring determines the degree of boost and is largely responsible for any significant differences in HP gained between the different companies. ECU tunning then modifies this from a safety standpoint by making sure A/F ratios are proper and your engine is not running too lean. This is all. The appearance of the ASP pulley above is exactly the same as appearance of the Kleemann pulley and those of other tuners.

.............The smaller pulley pictured above is a smaller waterpump pulley that is neccessary with the Hennessey and ASP pulleys because the larger diameter of those modified Crank shaft pullies cause them to rub against the stock water pump pulley when installed. It is not usually needed with the Kleemann and Renntech set up.

Ted

Last edited by Ted Baldwin; May 23, 2006 at 05:58 PM.

May 24, 2006 | 05:05 AM

#14

E55 RUSS

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E55K

456 HP at the wheel sound good with just a pullies...

Ted...

Do you think its SAFE to run 55 with Headers and Pullies and stock ECU ???

May 24, 2006 | 07:58 AM

#15

theboogers

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2020 S560,14 ml350, 03 sl55, silver, pano, slr cams, evo headers, lsd, 2019 s63 cab.

what belt size change do you need with the asp pulley? thanks

May 24, 2006 | 08:05 AM

#16

Ted Baldwin

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Quote:

Originally Posted by M5 RUS

456 HP at the wheel sound good with just a pullies...

Ted...

Do you think its SAFE to run 55 with Headers and Pullies and stock ECU ???

.............my opinion is that you should not do any engine modifications without doing before and after dynos with A/F ratios. This is the major point. Your dyno with A/F ratios will tell you if you need ECU changes. My opinion is that when done this way, many will discover that the ECU changes were not neccassary with the pulley upgrade alone. As you modify your car further with headers etc, your engine tends to lean out even more making it unsafe without ECU modifications for more fuel. Again, Dynos, dynos, dynos!!!!!!!! You simply MUST dyno your car with A/F ratios.

Ted

May 24, 2006 | 08:44 AM

#17

ima55r2

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The asp pulleys use the existing belt. The smaller water pump pulley offsets the larger crank pulley.

I was going to do the before and after dyno on the same day. Would it be better to wait some after the install to let the car do its adjusting and if so, how long?

May 24, 2006 | 09:01 AM

#18

rflow306

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From: Mia

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Quote:

Originally Posted by ima55r2

It uses the stock accessory belt but a larger supercharger belt. The perfect belt for the supercharger is a Dayco gold label belt #5080515.

Last edited by rflow306; May 24, 2006 at 10:15 AM.

May 26, 2006 | 05:46 AM

#19

E55 RUSS

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E55K

Hmm...so I need to get some other belt with ASP pullies or they come with diff S/C belt already

May 26, 2006 | 07:29 AM

#20

rflow306

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From: Mia

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Quote:

Originally Posted by M5 RUS

Hmm...so I need to get some other belt with ASP pullies or they come with diff S/C belt already

It does not come with a belt at least not when i purchased it. When I first purchased it Asp told me that the factory belt would work, yeah right. Called them back and they gave me a part number for a belt that was to long. So we found the correct size and called to inform them. Hopefully they are now giving customers the right belt size for our application.

May 29, 2006 | 04:40 AM

#21

E55 RUSS

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E55K

So I would definately need this Dayco belt you recccomended....Is it expensive ??? Can I get it form them as well ???

May 29, 2006 | 08:09 AM

#22

Ted Baldwin

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Quote:

Originally Posted by M5 RUS

So I would definately need this Dayco belt you recccomended....Is it expensive ??? Can I get it form them as well ???

.............nothing special about the belts. At the time of install, you look to see if you need a slightly larger or smaller belt and you purchase that from your local auto parts store. Mine came from Discount auto parts. The pulley upgrade is a really a very simple mod. Not sure why it is shrouded in mystery and wonder.

Ted

May 29, 2006 | 09:50 AM

#23

rflow306

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From: Mia

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Quote:

Originally Posted by Ted Baldwin

Ted I don't know about the Hennessey pulley but the ASP pulley required a slightly larger belt than a 510 but smaller than 525. I searched all over and found only one manufacturer that made a 515 belt which was dayco. I then found a local auto part that had it in stock.

I would be curious to know what belt size you have on the g wagon?.

May 29, 2006 | 11:04 AM

#24

E55 RUSS

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E55K

OK 515, 525 what measures are those...not sure if our local supplier would have such belt on stock...thats is why I want to prepare....

So I need size 515 ???

May 29, 2006 | 11:46 AM

#25

rflow306

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From: Mia

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Quote:

Originally Posted by M5 RUS

OK 515, 525 what measures are those...not sure if our local supplier would have such belt on stock...thats is why I want to prepare....

So I need size 515 ???

Those numbers stand for the aproximate size in inches 515=51.5 inches, 525=52.5 inches. The metric part number is 8kp1310 which should be available there. Look for an 8 grove belt 1310 mm long.