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I've got a 180 welded ASP I'll let you borrow to help diagnose if that's a help..
I'd be really surprised if there was something structurally wrong with your Weistec pulley. Are you sure all the pulleys are in alignment?
Thanks man. I may take you up on this simply to avoid the lead time it will take to get one made, if so maybe I can get one built for you and we trade?
I also dont think anything is structurally wrong with the weistec unit as well because it passes the eye test. It's under load when funky things are happening to the pulley system.
There are many variables on your car that can cause belt issues. As said above, you mention some play in the idler pulleys although they are properly tightened. This comes from the actual bearing itself having tolerance for high RPM's. This in itself can also be a problem and this is why many performance pulley manufacturers (including us) run double bearing idlers. This will eliminate any play or flex in the pulley while still being able to run a proper tolerance bearing. Below is a picture of the complete pulley system for our M156 system. All the high load idler pulleys are running double bearings.
We have sold many many crank pulleys for the M113K since our official release and those who have issues typically have multiple variables in the belt system that can be causing this issue. The design concept of the M113K crank pulley system was taken from our M156 pulley system which has been running great for years now. We never test or R&D on customers parts.
With this being said, we are in contact with your re-seller, and we will properly handle this so you don't end up with a $1,200 loss. Thank you.
Weistec Engineering
Can a bad tensioner cause the crank pulley to wobble?
1994 E320T,2004 E55 K4,2005 Denali, everything else at work
I have a car with a drilled and pinned 180mm Weistec crank pulley, new factory supercharger clutch/pulley, new factory tensioner with ASP pulley, ASP ribbed idler pulleys and belt wrap that is also shredding belts when driven aggressively. We have tried regular belts and HD belts without success so far (all 550s). We have shimmed the supercharger ribbed idler to see if that helps. Next step is video camera in engine compartment or a trip to the dyno. The first Weistec pulley was smooth and true (no wobble) but would not stop leaking from the brand new factory front crank seal. It was shredding belts and leaking to a drip within the first 2 or 3 full throttle starts. We bought another pulley and swapped it onto the car. The second pulley had more runout than the first. The oil leak is resolved but the shredded belt syndrome is not (yet). I worked for a local dealer for 10 years and have seen my share of wobbly crank pulleys. I don't think the wobble at the crank is the cause because I have seen plenty of wobbly stock pulleys that don't pitch belts. If anyone comes up with a silver bullet, please share! Getting tired of wrecking expensive belts...
I was throwing belts left and right. I swapped crank pulleys and now can drive around with my foot on the floor. It doesn't take much to throw belts. The crank pulley I had installed was sitting 1/2" towards the engine. Impossible to see but at 5,000RPM the belt would hop and slide off.
I went through 14 S/C belts and 3 serpentine belts in 6 months BTW.
I pulled off the belt wrap kit and it stopped my belt shredding issue. I wouldn't consider it solved because now my belt slips but at least it stays on. I may just drop another grand swapping to an ASP so I can use the wrap kit again.
I pulled off the belt wrap kit and it stopped my belt shredding issue. I wouldn't consider it solved because now my belt slips but at least it stays on. I may just drop another grand swapping to an ASP so I can use the wrap kit again.
slips as in the chirp sound ? does it effect performance at all ?
why do you like the bwk so much ? also what size weistec cp are you running ?
slips as in the chirp sound ? does it effect performance at all ?
why do you like the bwk so much ? also what size weistec cp are you running ?
thanks
im looking at logs of the car and the boost fluctuates quite a bit with out it. comparing it to logs with the BWK on with a stock style crank pulley it maintained boost. I have a weistec 180.
I pulled off the belt wrap kit and it stopped my belt shredding issue. I wouldn't consider it solved because now my belt slips but at least it stays on. I may just drop another grand swapping to an ASP so I can use the wrap kit again.
do you want to sell your weistec ? if so pm me best price as im in works with someone for a weistec 180mm.
Been testing car here with Eurocharged belt wrap kit and the weistec 180 mm crank pulley, std supercharger pulley
first time drive hard, sound comes from slipping belt , I noticed ,, is strange ,when buy belt wrap kit to avoid this . belt number 8PK1400 , IT MUST BE WRONG
After some test driving hard , I was driving for a day , next day took mechanic for hard test drive , and spaggeti belt ,totally gone
Mechanic say its probably 10 to 20 mm to long, this belt i got from eurocharged
I put the other new belt I have, and now for the moment no slip that I can hear,, now is not wrapped around last pulley, belt wrap kit.
i have the standard belt tensioner idler , is a 2007 mb sl55 amg 510, 517 hp
anybody know what exact belt it should be ?? belt thats broken is 8PK1400
im looking at logs of the car and the boost fluctuates quite a bit with out it. comparing it to logs with the BWK on with a stock style crank pulley it maintained boost. I have a weistec 180.
Check and make sure the crank pulley is seated all the way and same belt groove distance from timing chain cover as stock. Sounds like you have a belt walking. By removing the bwk, you just lenghthened the belt distance to compensate for the run out issues or belt waking problem.
A bad tensioner can cause slack at high rpm and also cause a belt to jump off a groove and shread. Check all your idlers and pulleys.
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
^ Ditto on checking all of the pulleys...my belt shredded and when removing the BWK to put on a new belt I noticed a very minute nick on one of them. I took some 3000 grit sand paper and smoothed out the imperfection. It was probably caused by a tool during an oil change, or really anything dropped that slightly hit it. Either way, I haven't had a problem since and that was about 5k miles ago.
This might not be what caused your issue, but just wanted to back up shardul and the other guys saying check the pulleys. I also noticed my idler pulley bolt was slightly loose, but I don't know if that was caused before the belt catastrophe or after.
Thread revive here. I am wanting to install a weistek 170mm crank pulley however do not wish to go threw the process of shredding belts. I have the BWK as well, however it seems that removing the BWK solved the issue above as the idler pulley was wondering to much, anyone tried the double bearing setup in the idler pulley as per Weistek's solution for the belt wrap kit.
Thread revive here. I am wanting to install a weistek 170mm crank pulley however do not wish to go threw the process of shredding belts. I have the BWK as well, however it seems that removing the BWK solved the issue above as the idler pulley was wondering to much, anyone tried the double bearing setup in the idler pulley as per Weistek's solution for the belt wrap kit.
belt wrap kit is waist off money,, if have standard compressor pulley,, you get the grip ok, when have bigger crank pulley, my belt wrap kit now, is just a support bracket for pulley up to the left on motor,, smaller compressor pulley,, make slip problem..
belt wrap kit is waist off money,, if have standard compressor pulley,, you get the grip ok, when have bigger crank pulley, my belt wrap kit now, is just a support bracket for pulley up to the left on motor,, smaller compressor pulley,, make slip problem..
Not entirely sure I get what you mean. Have you got a picture of how you have setup your belt wrap kit now with no slippage and no shredding of belts? Also do you have the weistek crank pulley in question?
belt wrap kit is waist off money,, if have standard compressor pulley,, you get the grip ok, when have bigger crank pulley, my belt wrap kit now, is just a support bracket for pulley up to the left on motor,, smaller compressor pulley,, make slip problem..
Not entirely sure I get what you mean. Have you got a picture of how you have setup your belt wrap kit now with no slippage and no shredding of belts? Also do you have the weistek crank pulley in question?
its on the engine, but not in use, belt wrap kit,, have 180 mm crank Weistec pulley , has trown my belt off 3 times ,on full load , just twisted it off . have also new alu pulley , brand new tensioner compressor, have 1 to 1,1 bar pressure.
For you 170 mm can be ok. the guys that sell, must know how mutch more pressure you get. Kleeman use 168 mm on the v8 .. wounder my 180 mm is little over the top.. wavetrac diff lock doing realy big difference ,, changing both back tires, every 4 to 5 month..
its on the engine, but not in use, belt wrap kit,, have 180 mm crank Weistec pulley , has trown my belt off 3 times ,on full load , just twisted it off . have also new alu pulley , brand new tensioner compressor, have 1 to 1,1 bar pressure.
For you 170 mm can be ok. the guys that sell, must know how mutch more pressure you get. Kleeman use 168 mm on the v8 .. wounder my 180 mm is little over the top.. wavetrac diff lock doing realy big difference ,, changing both back tires, every 4 to 5 month..
OK so you have the weistek 180mm crank pulley and with the belt wrap kit installed you threw 3 belts? Now your belt wrap kit is not in use and the crank pulley is now fine and not throwing belts anymore, correct? I don't mind loosing the belt wrap kit if I won't shred threw belts.
NO, shredded 2 belts fast, fitted in belt wrap position, last one on Dyno, before gave up that. System sit there,, but seems the arm is good for support, But with normal setup ,very tight belts , trown them off 3 times on heavy load. seems cant have to tight belt either . now been ok for some months. is still traction problem second gear ,even with Michelin Sport Cup 2 tires. Probaly will even be worse traction, when killer Chiller system is hooked up to the aircon system.. So my advice ,dont go to big on crank pulley, not to tight belt.
12-01-2014, 05:20 PM
