asp pulley wobble
09-12-2012, 01:08 AM
#26
MBWorld Fanatic!
Join Date: Oct 2009
Location: Southern California
Posts: 2,825
Likes: 0
Received 16 Likes
on
11 Posts
E55 w/ goods, Z32 Project underway
My belts would come off and shred due to this after a pull and I let off allowing the belt to slap so to speak. Lesson here: Win on the first run. 
But again, my 200mm should whip more, right, but no issues now??? Hope that tensioner works out.
But again, my 200mm should whip more, right, but no issues now??? Hope that tensioner works out.
09-12-2012, 12:09 PM
#27
MBWorld Fanatic!
Thread Starter
Join Date: Feb 2011
Location: miami / delray beach
Posts: 2,841
Received 202 Likes
on
155 Posts
2014 E63s amg 4matic, 2009 C63, 2006 E55 AMG , 2001.5 AUDI S4 stg 3+ w/meth
maybe a belt wrap kit would help prevent this ?
09-12-2012, 05:08 PM
#29
MBWorld Fanatic!
Thread Starter
Join Date: Feb 2011
Location: miami / delray beach
Posts: 2,841
Received 202 Likes
on
155 Posts
2014 E63s amg 4matic, 2009 C63, 2006 E55 AMG , 2001.5 AUDI S4 stg 3+ w/meth
its been 2 days on new tensioner and nothing yet lol
if i can go 2 months without it happening again then i will consider it solved...
if not, its either:
1.back to stock pulley or renntech/kleemann 168m balanced with weistec blower once proven
2. try a belt wrap kit
3. sell the car and get a 996 911TT and start modding that
09-12-2012, 06:38 PM
#30
Member
Join Date: Jun 2011
Location: Grand Prairie TX
Posts: 114
Likes: 0
Received 0 Likes
on
0 Posts
CLS55 AMG, TUNDRA PLATINUM, Concours 14 Sold,TRX 700XX Sold
i tried the gatorback belt after reading about it on the forum and it lasted about 3 days and blew up into pieces all over the place.... so far the dayco is the only one that doesnt shred, but still falls off...
its been 2 days on new tensioner and nothing yet lol
if i can go 2 months without it happening again then i will consider it solved...
if not, its either:
1.back to stock pulley or renntech/kleemann 168m balanced with weistec blower once proven
2. try a belt wrap kit
3. sell the car and get a 996 911TT and start modding that
its been 2 days on new tensioner and nothing yet lol
if i can go 2 months without it happening again then i will consider it solved...
if not, its either:
1.back to stock pulley or renntech/kleemann 168m balanced with weistec blower once proven
2. try a belt wrap kit
3. sell the car and get a 996 911TT and start modding that
Put on a 180 asp at a shop i trust (MPower Houston) and have drivien my car almost 8K with no belt issues and I am stage 3 with trunk tank, no cats.
if you like the car and can stand it, that is what i would do. Good luck, i know your pain.
09-15-2012, 04:11 PM
#31
MBWorld Fanatic!
Thread Starter
Join Date: Feb 2011
Location: miami / delray beach
Posts: 2,841
Received 202 Likes
on
155 Posts
2014 E63s amg 4matic, 2009 C63, 2006 E55 AMG , 2001.5 AUDI S4 stg 3+ w/meth
update: so 4 days later since changing tensioner i am about to go wash car and decided to pop hood and just check the belt to see if any abnormal wear appear on the new belt i installed when i changed the tensioner and this is what i find:
so it looks like tensioner is not the problem and it looks like the belt is being walking itself off the pulley over time... i checked the grooves a million times when installing belt to make sure they are aligned with belt on all pulleys so i dont think that is issue....
what else can cause the belt to walk off the crank pulley like that asides from pulley wobble? (as seen in my previous videos i really dont appear to have pulley wobble)
so it looks like tensioner is not the problem and it looks like the belt is being walking itself off the pulley over time... i checked the grooves a million times when installing belt to make sure they are aligned with belt on all pulleys so i dont think that is issue....
what else can cause the belt to walk off the crank pulley like that asides from pulley wobble?
(as seen in my previous videos i really dont appear to have pulley wobble)
09-15-2012, 06:04 PM
#32
MBWorld Fanatic!
Join Date: Oct 2009
Location: Southern California
Posts: 2,825
Likes: 0
Received 16 Likes
on
11 Posts
E55 w/ goods, Z32 Project underway
Same crank as I had, when it slaps back, it walks off the pulley. Have had stock pulley, welded 172, pinned 180mm, now a 200 welded on my core. Same tensioner, same everything, the only pulley I ever lost belts on was the 180mm pinned. I think you have to change to a different pulley.
09-15-2012, 06:35 PM
#35
MBWorld Fanatic!
09-15-2012, 07:15 PM
#36
sorry for my ignorance, but what is a belt wrap kit? any pics?
09-15-2012, 07:46 PM
#37
Out Of Control!!
09-16-2012, 07:56 PM
#38
Out Of Control!!
Belt wrap reduces pulley slippage and possible belt whipping...
Possible HP gains too from less slippage....
I think it showed about 20-22 HP...
Attachment 243680
Attachment 243681
My SC engages smoother and definitely pulls more consisitently
on WOT !!!
Possible HP gains too from less slippage....
I think it showed about 20-22 HP...
Attachment 243680
Attachment 243681
My SC engages smoother and definitely pulls more consisitently
on WOT !!!
09-16-2012, 08:07 PM
#40
Junior Member
Join Date: Apr 2012
Location: Sumwhere in TEXAS
Posts: 66
Likes: 0
Received 0 Likes
on
0 Posts
2005 E55 AMG....Speed is Relaxin'
http://i256.photobucket.com/albums/h.../dyno1_001.jpg
http://i256.photobucket.com/albums/h.../dyno2_002.jpg
only change was belt wrap
http://i256.photobucket.com/albums/h.../dyno2_002.jpg
only change was belt wrap
09-16-2012, 08:09 PM
#41
MBWorld Fanatic!
Join Date: Aug 2010
Location: Northern Va
Posts: 2,156
Likes: 0
Received 6 Likes
on
3 Posts
Dirt Scooters
I have a real hard time believing 20hp. I as well as many other have logged the crap out of there cars and I have never seen belt slip. Not with a 175mm,180mm or the 195mm. If there was a 20hp increase it wasn't from the belt wrap kit.
09-16-2012, 08:10 PM
#42
Out Of Control!!
http://i256.photobucket.com/albums/h.../dyno1_001.jpg
http://i256.photobucket.com/albums/h.../dyno2_002.jpg
only change was belt wrap
http://i256.photobucket.com/albums/h.../dyno2_002.jpg
only change was belt wrap
You should have logged boost with a new belt before you did the wrap
Last edited by blackbenzz; 09-16-2012 at 08:15 PM.
09-16-2012, 08:12 PM
#43
MBWorld Fanatic!
http://i256.photobucket.com/albums/h.../dyno1_001.jpg
http://i256.photobucket.com/albums/h.../dyno2_002.jpg
only change was belt wrap
http://i256.photobucket.com/albums/h.../dyno2_002.jpg
only change was belt wrap
....What size pulley are you running ?
09-16-2012, 08:27 PM
#44
MBWorld Fanatic!
I can believe it, before I put a brand new tensioner on with a new slightly smaller belt I could get my belt to smoke on a hard pull. I could smell the freaking rubber from the belt in the cab. I think what makes the difference depends on exactly how tight the belt was before and then after the kit.
09-16-2012, 08:31 PM
#45
MBWorld Fanatic!
Join Date: Aug 2007
Location: Jacksonville, FL
Posts: 2,596
Likes: 0
Received 5 Likes
on
5 Posts
05 White Pano E55, Cadillac CTS-V
What about one dyno being in SAE and the other (his higher #) in STD correction, that will make differences in numbers right there since STD correction will provide higher numbers due to the reference numbers it uses (higher pressure and cooler air) compared to SAE for correction.
That simple change in the dyno graph since it can be played with on a dynojet can change the numbers to close to what you see different between the two.
For the untrained eye it looks great like a 20+whp gain! And could be a clever/sneaky/tricking/lying however you want to put it way of making a "mod/tune/etc" look like it improved something that it did not.
That simple change in the dyno graph since it can be played with on a dynojet can change the numbers to close to what you see different between the two.
For the untrained eye it looks great like a 20+whp gain! And could be a clever/sneaky/tricking/lying however you want to put it way of making a "mod/tune/etc" look like it improved something that it did not.
Last edited by urbamworm; 09-16-2012 at 08:48 PM.
09-16-2012, 08:54 PM
#46
Junior Member
Join Date: Apr 2012
Location: Sumwhere in TEXAS
Posts: 66
Likes: 0
Received 0 Likes
on
0 Posts
2005 E55 AMG....Speed is Relaxin'
Sorry......... I'm still having problems uploading pics
Correct size......
DYNO sheets from "SCOTO" car after same belt wrap
Install.....just providing Dyno sheet.
Yes probable belt slippage from old belt....
True.
Pics are from my car with belt wrap after install...
TCU tune tomorrow.
Pending my Dyno soon......
Correct size......
DYNO sheets from "SCOTO" car after same belt wrap
Install.....just providing Dyno sheet.
Yes probable belt slippage from old belt....
True.
Pics are from my car with belt wrap after install...
TCU tune tomorrow.
Pending my Dyno soon......
09-16-2012, 08:57 PM
#47
MBWorld Fanatic!
What about one dyno being in SAE and the other (his higher #) in STD correction, that will make differences in numbers right there since STD correction will provide higher numbers due to the reference numbers it uses (higher pressure and cooler air) compared to SAE for correction.
That simple change in the dyno graph since it can be played with on a dynojet can change the numbers to close to what you see different between the two.
For the untrained eye it looks great like a 20+whp gain! And could be a clever/sneaky/tricking/lying however you want to put it way of making a "mod/tune/etc" look like it improved something that it did not.
That simple change in the dyno graph since it can be played with on a dynojet can change the numbers to close to what you see different between the two.
For the untrained eye it looks great like a 20+whp gain! And could be a clever/sneaky/tricking/lying however you want to put it way of making a "mod/tune/etc" look like it improved something that it did not.
09-17-2012, 06:07 AM
#48
MBWorld Fanatic!
Join Date: Aug 2007
Location: Jacksonville, FL
Posts: 2,596
Likes: 0
Received 5 Likes
on
5 Posts
05 White Pano E55, Cadillac CTS-V
Didn't even look at that lol. Yeah, lean that baby out (or do a cool pass so it doesn't dump fuel) and that will do the trick too.
09-17-2012, 05:16 PM
#49
Junior Member
Join Date: Jun 2010
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
2005 E55
car started throwing belt after having ec 172m pulley installed about april and throws the dayco 51.5 belts off and shreds the gates 51.4 and goodyear gator 51.5 belts...
thought it was belts at first so ec recommended trying diff brands which i did to no avail... then i noticed a little scoring on the top of the belts (smooth side) so though tensioner pulley might be the culpret since its the only pulley that touches th smooth side of belt, so switched to ASP tensioner pulley to no avail and now it looks kinda wobbly as in the video, but i couldnt honestly remember what the original MB tensioner pulley spun like so i had no ref as to if this is normal for the asp pulley or not
i def am going to order a new actual tensioner unit that the pulley attaches to because it seems its not holding the dayco belt tight enough... really annoying when you are trying to pull away from someone and then all the sudden car
looses like 200hp cuz a belt came of
thought it was belts at first so ec recommended trying diff brands which i did to no avail... then i noticed a little scoring on the top of the belts (smooth side) so though tensioner pulley might be the culpret since its the only pulley that touches th smooth side of belt, so switched to ASP tensioner pulley to no avail and now it looks kinda wobbly as in the video, but i couldnt honestly remember what the original MB tensioner pulley spun like so i had no ref as to if this is normal for the asp pulley or not
i def am going to order a new actual tensioner unit that the pulley attaches to because it seems its not holding the dayco belt tight enough... really annoying when you are trying to pull away from someone and then all the sudden car
looses like 200hp cuz a belt came of
By the way using Gate 514 HD.
09-17-2012, 06:22 PM
#50
MBWorld Fanatic!
Thread Starter
Join Date: Feb 2011
Location: miami / delray beach
Posts: 2,841
Received 202 Likes
on
155 Posts
2014 E63s amg 4matic, 2009 C63, 2006 E55 AMG , 2001.5 AUDI S4 stg 3+ w/meth
Mine started shredding and/or coming off after installing a 172 ASP pulley. Coincidence? Not sure. However I did notice that this happened only during a strong pull with letting off. I know that from hearing the belt beating on my hood. That being said my tensioner pulley was very loose. I replaced the pulley but have not slammed in the same manner to test. Mostly because I do not want to buy another belt.
By the way using Gate 514 HD.
By the way using Gate 514 HD.
mine came off about 90% of the time the same way.. after a hard run then minute or so later comes off...
after finding the belt the way i did in the recent fotos above it makes sense that the gates belt was shredding and the dayco was just falling off, since the dayco is slightly bigger it seemed to be able to come all the way off after the belt slack from hard run while the slightly tighter gates belt seems to only come off halfway after the hard run which allows it to get split in half by the crank pulley outer ring
