check your larger pulley for wobble!
Thread Starter
PLATINUM SPONSOR
Joined: Jun 2008
Posts: 3,834
Likes: 65
From: Texas
2003 CL55
check your larger pulley for wobble!
This has been posted before but I was curious and tested a wobbling 175mm VRP pulley.. Have to be tons of them out there.. I had a balance shop and machine shop that specializes in automotive pulley balancing check the wobble issue..
I have heard members being told that it is ok for a pulley to wobble at idle and that with RPM it will smooth out.. This is flat out BS and an optical illusion that is causing damage to your 48K motor.... If it wobbles, it is tearing main bearing apart and causing all kinds of harmonic balance damage. Our outer S/C ring on our crank pulley is pretty far out past center and any wobble is amplified from this extra leverage..
I included a picture of the VRP pulley for example, as it is in this style dsign that is causing wobble. Not sure how many MFG`s use this style and there are ways to make it work but the VRP did not display any.. At least the one i had checked (only 6 months old)..
First the pulley in the picture is made from a stock Mb pulley and that is a plus. (IMO).. Bolt on outer ring is also nice but here is where it all went wrong..
First, the pulley is not balanced (no balancing holes).. This is part of the issue .. Not sure if it was save money or just missed in the design.. Second, it is alsmost impossible to bolt an outer ring onto another ring with multiple holes and stay true.. It will always have some elipse to it , unless the parts are machined to inner lock and then bolt together.. This design failed to have that and thus wobbling pulley`s and stress on seals, bearings, crank and all internal rotating parts..
Check those pulley`s!
I have heard members being told that it is ok for a pulley to wobble at idle and that with RPM it will smooth out.. This is flat out BS and an optical illusion that is causing damage to your 48K motor.... If it wobbles, it is tearing main bearing apart and causing all kinds of harmonic balance damage. Our outer S/C ring on our crank pulley is pretty far out past center and any wobble is amplified from this extra leverage..
I included a picture of the VRP pulley for example, as it is in this style dsign that is causing wobble. Not sure how many MFG`s use this style and there are ways to make it work but the VRP did not display any.. At least the one i had checked (only 6 months old)..
First the pulley in the picture is made from a stock Mb pulley and that is a plus. (IMO).. Bolt on outer ring is also nice but here is where it all went wrong..
First, the pulley is not balanced (no balancing holes).. This is part of the issue .. Not sure if it was save money or just missed in the design.. Second, it is alsmost impossible to bolt an outer ring onto another ring with multiple holes and stay true.. It will always have some elipse to it , unless the parts are machined to inner lock and then bolt together.. This design failed to have that and thus wobbling pulley`s and stress on seals, bearings, crank and all internal rotating parts..
Check those pulley`s!
__________________
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
Thread Starter
PLATINUM SPONSOR
Joined: Jun 2008
Posts: 3,834
Likes: 65
From: Texas
2003 CL55
That picture came off their site. Pic. is not of the one I tested.
Looks like pins but they are still the same as drilling holes.. You have tolerance issues and end up with elipse shape.. Some may be round/true but the odds do not favor a drilled and none balanced part..
Looks like pins but they are still the same as drilling holes.. You have tolerance issues and end up with elipse shape.. Some may be round/true but the odds do not favor a drilled and none balanced part..
__________________
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
MBWorld Fanatic!
Joined: Oct 2009
Posts: 2,825
Likes: 17
From: Southern California
E55 w/ goods, Z32 Project underway
Would have to agree, I passed up a few sales on pulleys due to wobbles. Thankfully the sellers were honest enough to state this in our communication-sure did save the hassle of any Paypal disputes. How much to balance out a wobbly pulley?
MBWorld Fanatic!
Joined: May 2009
Posts: 1,484
Likes: 13
From: Abu Dhabi
C218 CLS63TT PP Edition1, W213 E63S
ASP are good.
my pulley is done the same way as stock but it is bigger.
they use the OEM inside pulley and bolt, but remove the outside pulley and get a bigger one. welded the same way as stock is. rubber and etc.
ni wobble @ all.
my pulley is done the same way as stock but it is bigger.
they use the OEM inside pulley and bolt, but remove the outside pulley and get a bigger one. welded the same way as stock is. rubber and etc.
ni wobble @ all.
Trending Topics
MBWorld Fanatic!
Joined: May 2008
Posts: 3,077
Likes: 2
2006 E55 AMG
I 2nd the ASP pulley. I have zero wobble with my pulley and I'm very pleased with the gains. I agree 100% with Brooke on this one, a wobbling pulley is very bad and the result could be catastrophic if unlucky.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Super Moderator
Joined: Jul 2003
Posts: 11,664
Likes: 3
From: SoCal
W221
Super Member
Joined: Oct 2009
Posts: 923
Likes: 0
From: Jacksonville, Florida
2006 E55 AMG --old cars -- E39 M5, 2.7tt Audi S4, E36 M3 **Ducati 996, 748
Mine has no wobble at all --- I got lucky --- Afterwards, I heard the Evosports are great because they never wobble -- maybe because they are built from the ground up -- not a stock pulley with a glued on ring.
MBWorld Fanatic!
Joined: Jun 2007
Posts: 2,949
Likes: 0
From: Philadelphia, PA
2008 A8L, 2002 996TT X50, 2009 X5
If you're talking build quality and not necessarily power production (as the question was posed above) I'd have to agree 100% with this statement. I've had three crank pullies on my car - only the stock and Kleemann pullies show zero wobble from idle on up. From comments I've seen, I'd surmise Renntech to be in the same boat - although haven't tried their product personally.
Exotic Metal - good info above, thanks for posting.
Exotic Metal - good info above, thanks for posting.
Thread Starter
PLATINUM SPONSOR
Joined: Jun 2008
Posts: 3,834
Likes: 65
From: Texas
2003 CL55
If you're talking build quality and not necessarily power production (as the question was posed above) I'd have to agree 100% with this statement. I've had three crank pullies on my car - only the stock and Kleemann pullies show zero wobble from idle on up. From comments I've seen, I'd surmise Renntech to be in the same boat - although haven't tried their product personally.
Exotic Metal - good info above, thanks for posting.
Exotic Metal - good info above, thanks for posting.
I have only used ASP pulley`s on my cars and SUV`s.. None have ever failed or wobbled and that is why I keep going back to them for all my vehicles`s pulley`s.. I am sure others have had simulair experiences with their favorite pulley.. Either way, just make sure they run true.. I hear that 8-10 thou. of run out is ok but that is still really tight..
Oh yeah, I have also been hearing that ASP has been making some huge custom S/C pulley sets for the 55 S/C engine.. Must be a bunch of sneaky MB members out there..lol
I am thinking of going larger pretty soon too. Others may stay quiet but I will post my results, after I go larger..
MBWorld Fanatic!
Joined: Jul 2008
Posts: 2,172
Likes: 3
From: Philly
997TT, C192 GT63, W464 G550, MS Plaid
Oh yeah, I have also been hearing that ASP has been making some huge custom S/C pulley sets for the 55 S/C engine.. Must be a bunch of sneaky MB members out there..lol
I am thinking of going larger pretty soon too. Others may stay quiet but I will post my results, after I go larger..
i did hear that they made a 190mm for an E55
Last edited by prodigymb; Dec 14, 2009 at 02:36 PM.
MBWorld Fanatic!
Joined: Sep 2008
Posts: 3,152
Likes: 0
From: murfreesboro,tn
2003 porsche 996 turbo
Correct, I was only posting about wobble and not power gains.. Many people do not know or really have time to learn all the dynamics of our harmonic balancing S/C pulley.. I was not picking on one brand or another , just saying to CHECK your aftermarket pulley..
I have only used ASP pulley`s on my cars and SUV`s.. None have ever failed or wobbled and that is why I keep going back to them for all my vehicles`s pulley`s.. I am sure others have had simulair experiences with their favorite pulley.. Either way, just make sure they run true.. I hear that 8-10 thou. of run out is ok but that is still really tight..
Oh yeah, I have also been hearing that ASP has been making some huge custom S/C pulley sets for the 55 S/C engine.. Must be a bunch of sneaky MB members out there..lol I am thinking of going larger pretty soon too. Others may stay quiet but I will post my results, after I go larger..
I have only used ASP pulley`s on my cars and SUV`s.. None have ever failed or wobbled and that is why I keep going back to them for all my vehicles`s pulley`s.. I am sure others have had simulair experiences with their favorite pulley.. Either way, just make sure they run true.. I hear that 8-10 thou. of run out is ok but that is still really tight..
Oh yeah, I have also been hearing that ASP has been making some huge custom S/C pulley sets for the 55 S/C engine.. Must be a bunch of sneaky MB members out there..lol
I am thinking of going larger pretty soon too. Others may stay quiet but I will post my results, after I go larger..
Super Member
Joined: Sep 2008
Posts: 504
Likes: 0
From: SoCal
SL55 AMG
Oh yeah, I have also been hearing that ASP has been making some huge custom S/C pulley sets for the 55 S/C engine.. Must be a bunch of sneaky MB members out there..lol I am thinking of going larger pretty soon too. Others may stay quiet but I will post my results, after I go larger..
I am thinking of going larger pretty soon too. Others may stay quiet but I will post my results, after I go larger..
I've talked to Lee a couple times and I was actually entertaing the idea of testing out a bigger pulley and having them make it for me but I was out of time and most likely they werent going to have it ready for me by the Famoso event that past.
I really do wonder what sizes those sneaky MB owner acutally went with and the results they had. I look foward to your result's Brooke
Thread Starter
PLATINUM SPONSOR
Joined: Jun 2008
Posts: 3,834
Likes: 65
From: Texas
2003 CL55
Those sneaky guys........BUSTED
I've talked to Lee a couple times and I was actually entertaing the idea of testing out a bigger pulley and having them make it for me but I was out of time and most likely they werent going to have it ready for me by the Famoso event that past.
I really do wonder what sizes those sneaky MB owner acutally went with and the results they had. I look foward to your result's Brooke
I've talked to Lee a couple times and I was actually entertaing the idea of testing out a bigger pulley and having them make it for me but I was out of time and most likely they werent going to have it ready for me by the Famoso event that past.
I really do wonder what sizes those sneaky MB owner acutally went with and the results they had. I look foward to your result's Brooke
Anyone find any crooked pulley`s in thier recent inspection???
__________________
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
