07g55

I just got my new 172mm pulley installed ( from MB foreman) and it it slightly wobbeling. Tech said up to 1/4 inch of wobble should be ok, but I don't like the look of it.

How much wobble is ok - or should there be no wobble whatsoever for safe and longevity?

snail45

I know that some people have had some wobble, as did I with a 172. I didn't like it either and was scared of it eating up my crank keyway. Went to a 180 which I swapped myself and had no wobble anymore. My original pulley wobbled for the first 6 months of owning the car and when I changed it out, there was no damage to the keyway so I don't know if it was necessary but did it for piece of mind.

I guess that doesn't really help you.

Edit: 1/4 inch seems kind of bad though.

cahiil55k

No wobble would be best. Several months ago my aftermarket pulley was wobbly, or it appeared to wobble, so the horror stories about aftermarket pulleys damaging engines worried the heck out of me. Around the same time I replaced a bad idler pulley and tensioner pulley assembly and the wobble went away.

Bramage

No wobble on the new 180mm... I have double checked a few times after reading that some get a wobble. So far, mine is true as stock, or better

shardul

iTrader: (1)

what brand is the 172mm

07g55

Actually my wobble is not 1/4 inch - my MB tech told me that anything below 1/4 inch shouldn't be an issue. My wobble for sure is less than that.

Yeah - all that talk about eaten up keyweys got me nervous too

I belive it's the latest gen ASP pulley. The installer ( Main Tech at my local dealership - does all SLRs etc. ) actually told me that in his mind it was the best aftermarket pulley he had seen so far. But any wobble makes me a bit nervous...

I will cruise around with it for another day and we will have another look at it. Problem is on my G, the install is a bit more complicated, appearantly requiring removal of radiator

grantwoodtx

Did you buy it new from Eurocharged? I have the 172mm from EC and have 0 wobble. Call Jerry and talk to him about it.

bassn_07

My VRP pulley had noticable wobble and I was also told it was okay. A few months later the pulley broke off...be careful.

shardul

iTrader: (1)

my thoughts likewise. i had 3 differnt VRP ones and they all wobbled. thank god they did not break off.

skratch77

Sucks just blew 550 on a vrp pulley.did you guys use any type of glue on the screws?

shardul

iTrader: (1)

no but make sure you use a new crank bolt becasue it is a stretch one.

skratch77

Im going to run an evotech 175 it uses stock pulley setup.

I have a new bolt also. It came with the kit and I just need to make sure its the right one.

bassn_07

In my case the screw didn't back off, the actual pulley itself broke off near the hub. Lucky for me the hub was still in tact which help protect the key way from any damage. I was very fortunate to get away with very little damage.

Jakpro1

Have had several pulleys on over the years and some have had slight...and I mean SLIGHT wobble to them. 1/4" seems extreme.

You got any video you could show us? Maybe some cell phone vid or something.

Be interesting to see it.

AgSilver

Have had an ASP for some time with absolutely no wobble and no run-out whatsoever.

pearlpower

Considering the crank is the heart of the motor, I would never allow for even the slightest wobble which is why I dug deep when folks here sold their used units and I pressed the question until they either responded or just ignored my wobble question. Sad that folks that know their pulley wobbles would not disclose this in the ad. I went ahead and bought new as my confidence in a used unit and a few sellers was low.

I used locktite on my bolt, just for added insurance.