Just Spoke With ASP About Pulley Upgrade
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I highly doublt the pulley will fall apart unless mis-installed one way or another. Might have been a dampening issue but ASP description said they revised it for the Mercedes.
Wasn't the dyno graph in the above post linked were before and after install of ASP pulley, if so it showed gained of whopping 50rwhp. But to be conservative we know by raising the boost w/o ecu shall net at least 30-35rwhp gain. Not bad for $895 price.
Wayne
Wasn't the dyno graph in the above post linked were before and after install of ASP pulley, if so it showed gained of whopping 50rwhp. But to be conservative we know by raising the boost w/o ecu shall net at least 30-35rwhp gain. Not bad for $895 price.
Wayne
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From: Southern California
S600TT, R350
I highly doublt the pulley will fall apart unless mis-installed one way or another. Might have been a dampening issue but ASP description said they revised it for the Mercedes.
- Inner hub that mounts to the crankshaft
- Rubber band that does the dampening
- Outter ribbed pulley that drives the accessories belt
On AMG Kompressor motors crankshaft damper drives the kompressor, which means that the rubber band has to support close to 100HP that it takes to spin the kompressor to redline.
A number of companies, including ASP, modify factory damper by machining away outter pulley and pressing on or welding on (ASP) a bigger diameter ring in order to increase compressor RPMs and thus increase the boost. Which also increases the load on the rubber band.
There have been a number of failures on this and other MB forums as well as other experiences from other users of other makes that had use this method to create larger pulley. Some failures have been very dramatic with extensive damage to the radiator and front engine cover. Some have were caught, due to excessive noise and did minor damage.
Now there have been some that lasted for a number of years without a problem. Since they are made on individual basis the quality of work is dependent on the skill and knowledge of who is doing the work. So far it has been very incosistent.
There have also been failures of stock, unmodified, dampers with rubber band separating and launching outter ring through the radiator, usually on high mileage cars.
Take your own chances.
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Thanks for the feedback Vadim. So in your opinion the correct way to raise boost with aftermarket pulley was to keep the factory spec dampener ring and make the outter pulley larger to undrive the compressor pulley right? I was under the impression the aftermarket pulleys were already made this way, if not then where does one find the larger dampening ring.
Since both stock and aftermarket outter main crank pulley (that drives the compressor) are both 2pc pressed onto stock main inner pulley, I am assuming as long as stock diameter dampener ring were retained longetivity shouldn't be sacraficed.
However, now there's also another issue if the factory 2pc pullies were 'dynamicaly balanced' in respective to their weight, then techincally speaking putting on the aftermarket pulley might ruin the balancing on the pulley, then everyone that put on the aftermarket pulley should send their main inner pullies out for balancing with the aftermarket outter pullies.
Wayne
Since both stock and aftermarket outter main crank pulley (that drives the compressor) are both 2pc pressed onto stock main inner pulley, I am assuming as long as stock diameter dampener ring were retained longetivity shouldn't be sacraficed.
However, now there's also another issue if the factory 2pc pullies were 'dynamicaly balanced' in respective to their weight, then techincally speaking putting on the aftermarket pulley might ruin the balancing on the pulley, then everyone that put on the aftermarket pulley should send their main inner pullies out for balancing with the aftermarket outter pullies.
Wayne
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From: Southern California
S600TT, R350
A proper way is to make a whole new damper which is larger in diameter. Any time you take a stock damper apart and put it back together, you stand a chance of things going wrong.
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From: Mia
2005 E 55
Stock factory damper is made from three parts.
- Inner hub that mounts to the crankshaft
- Rubber band that does the dampening
- Outter ribbed pulley that drives the accessories belt
On AMG Kompressor motors crankshaft damper drives the kompressor, which means that the rubber band has to support close to 100HP that it takes to spin the kompressor to redline.
A number of companies, including ASP, modify factory damper by machining away outter pulley and pressing on or welding on (ASP) a bigger diameter ring in order to increase compressor RPMs and thus increase the boost. Which also increases the load on the rubber band.
There have been a number of failures on this and other MB forums as well as other experiences from other users of other makes that had use this method to create larger pulley. Some failures have been very dramatic with extensive damage to the radiator and front engine cover. Some have were caught, due to excessive noise and did minor damage.
Now there have been some that lasted for a number of years without a problem. Since they are made on individual basis the quality of work is dependent on the skill and knowledge of who is doing the work. So far it has been very incosistent.
There have also been failures of stock, unmodified, dampers with rubber band separating and launching outter ring through the radiator, usually on high mileage cars.
Take your own chances.
- Inner hub that mounts to the crankshaft
- Rubber band that does the dampening
- Outter ribbed pulley that drives the accessories belt
On AMG Kompressor motors crankshaft damper drives the kompressor, which means that the rubber band has to support close to 100HP that it takes to spin the kompressor to redline.
A number of companies, including ASP, modify factory damper by machining away outter pulley and pressing on or welding on (ASP) a bigger diameter ring in order to increase compressor RPMs and thus increase the boost. Which also increases the load on the rubber band.
There have been a number of failures on this and other MB forums as well as other experiences from other users of other makes that had use this method to create larger pulley. Some failures have been very dramatic with extensive damage to the radiator and front engine cover. Some have were caught, due to excessive noise and did minor damage.
Now there have been some that lasted for a number of years without a problem. Since they are made on individual basis the quality of work is dependent on the skill and knowledge of who is doing the work. So far it has been very incosistent.
There have also been failures of stock, unmodified, dampers with rubber band separating and launching outter ring through the radiator, usually on high mileage cars.
Take your own chances.
But then again there has also been a reported failure of the one piece design also.
The rubber ring on the the rear of the balancer is for dampening but the rubber ring on the crank pulley also serves another purpose. It helps with the load on the snout of the crank caused by the supercharger.
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From: Miami
04 E55
Stock factory damper is made from three parts.
- Inner hub that mounts to the crankshaft
- Rubber band that does the dampening
- Outter ribbed pulley that drives the accessories belt
On AMG Kompressor motors crankshaft damper drives the kompressor, which means that the rubber band has to support close to 100HP that it takes to spin the kompressor to redline.
A number of companies, including ASP, modify factory damper by machining away outter pulley and pressing on or welding on (ASP) a bigger diameter ring in order to increase compressor RPMs and thus increase the boost. Which also increases the load on the rubber band.
There have been a number of failures on this and other MB forums as well as other experiences from other users of other makes that had use this method to create larger pulley. Some failures have been very dramatic with extensive damage to the radiator and front engine cover. Some have were caught, due to excessive noise and did minor damage.
Now there have been some that lasted for a number of years without a problem. Since they are made on individual basis the quality of work is dependent on the skill and knowledge of who is doing the work. So far it has been very incosistent.
There have also been failures of stock, unmodified, dampers with rubber band separating and launching outter ring through the radiator, usually on high mileage cars.
Take your own chances.
- Inner hub that mounts to the crankshaft
- Rubber band that does the dampening
- Outter ribbed pulley that drives the accessories belt
On AMG Kompressor motors crankshaft damper drives the kompressor, which means that the rubber band has to support close to 100HP that it takes to spin the kompressor to redline.
A number of companies, including ASP, modify factory damper by machining away outter pulley and pressing on or welding on (ASP) a bigger diameter ring in order to increase compressor RPMs and thus increase the boost. Which also increases the load on the rubber band.
There have been a number of failures on this and other MB forums as well as other experiences from other users of other makes that had use this method to create larger pulley. Some failures have been very dramatic with extensive damage to the radiator and front engine cover. Some have were caught, due to excessive noise and did minor damage.
Now there have been some that lasted for a number of years without a problem. Since they are made on individual basis the quality of work is dependent on the skill and knowledge of who is doing the work. So far it has been very incosistent.
There have also been failures of stock, unmodified, dampers with rubber band separating and launching outter ring through the radiator, usually on high mileage cars.
Take your own chances.
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From: Central New Jersey
CLK63 Black, E350 Wagon, Supercharged Denali, Lotus Elise, Tesla Model 3 Dual-Motor.
Both types of dampers have issues.
One has vibration/harmonic issues.
One has inner ring rubber issues.
Pick your poison carefully... one just cost more.
MachC5
One has vibration/harmonic issues.
One has inner ring rubber issues.
Pick your poison carefully... one just cost more.
MachC5
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Joined: Mar 2006
Posts: 2,855
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From: Southern California
S600TT, R350
Both types of dampers have issues.
One has vibration/harmonic issues.
One has inner ring rubber issues.
Pick your poison carefully... one just cost more
One has vibration/harmonic issues.
One has inner ring rubber issues.
Pick your poison carefully... one just cost more
www.evosport.com
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Anyone has picture of the ASP pulley and how it stands compare to the Evo Sport one? My guess is ASP is a one piece CNC 6067 or 7075 aluminum design, is the Evo Sport pulley a one piece design as well?
Vadim, so you would recommend the EVO one over any other ones on the market correct?
Wayne
Vadim, so you would recommend the EVO one over any other ones on the market correct?
Wayne
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'03 E55, Range Rover Sport Supercharged, Ducati 748R
this is the only thread i've ever heard hearsay of a problem so imho, you guys might be making too much about the whole thing.
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From: South FL & NYC
Your worst nightmare...
I haven't seen the evosport up close but the asp is the same design as kleemann. they both have larger outer diameters afixed to the hub, asp spot welded and kleemann pinned.
this is the only thread i've ever heard hearsay of a problem so imho, you guys might be making too much about the whole thing.
this is the only thread i've ever heard hearsay of a problem so imho, you guys might be making too much about the whole thing.
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Joined: Jun 2005
Posts: 1,406
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From: Mia
2005 E 55
There is a third type. A totally new damper. It is called a friction damper and it has a wide range of frequency of operation. It is what I have had on my C32 and what evosport has been selling in their 55 Stage I and Stage II kits for over two years now.
www.evosport.com
www.evosport.com
The stock MB balancer was designed for the engines rpm range, horsepower and supercharger. A better balancer would typically only be needed when our motors begin to spin past 7500 or if the engines horsepower increases substantially.
There is no arguing that the high performance dampeners are stronger ,hence they carry sfi approval. But their dampening advantage over a well designed stock balancer is always being debated back and forth.
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'03 G500, '13 G63, '17 GLS63,
Too much work today...tommorow my friend
Thread Starter
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I just thought about something... A few weeks back I had some service done and I'm sure they updated the ECU, now when I install the pulleys will I get the full 45 HP with the ECU upgrade or will the updated block the extra HP?
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From: Treasure Coast
2018 Mclaren 720s, 2021 Aston Martin DBX
Anyone has picture of the ASP pulley and how it stands compare to the Evo Sport one? My guess is ASP is a one piece CNC 6067 or 7075 aluminum design, is the Evo Sport pulley a one piece design as well?
Vadim, so you would recommend the EVO one over any other ones on the market correct?
Wayne
Vadim, so you would recommend the EVO one over any other ones on the market correct?
Wayne
https://mbworld.org/forums/showpost....0&postcount=12
Go to evosport's site for their setup.
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From: Chicago area (Plainfield)
2004 E55 White
ASP replied to my email asking about the A/F curve with their pulley. They said that someone else dynoed the car before and after the pulley install and told them it was ok. It may be ok for them but not for me and my $$$ engine. Has anyone done a dyno with ASP pulleys with A/F?
