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Old 07-30-2003, 09:04 AM   #1
DrBoy01
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Default Wobbling L/W Crank Pulley?

A friend and I installed a MrJosh L/W Crank pulley (stock size) about 6 mo. ago. Everything has been running fine, but recently I've been hearing a bit of alternator whine and other loud "whirring" noises coming from the pulleys. If I look at the crank pulley, it seems to vibrate a little as it rotates. It makes me a little uneasy

Is this normal? Should I have it tightened?
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Old 07-30-2003, 09:31 AM   #2
Pat L.I.
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try tightening the belts. my gfb pulley looks like it wobbles slightly i believe thats normal. and i had what i thought was an alternator noise because when i started the car up, (cold) and i lowered all four windows at once or put any type of electrical load on the system.. it would make this jingle/ squeel noise. it turns out the belts on the pulleys were loose, once tightened no more noise! no more stress about the alternator failing! the timeframe that i started hearing the noise was about four or five months after the install. hope this fixes it!
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Old 07-30-2003, 11:11 AM   #3
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Quote:
try tightening the belts.
How does one tighten belts? they are prefixed sizes

<-doesnt understand because he's obtuse!



drboy01 dunno if you responded but how did u take of your stock pulley and put on your lw one - w/ the pulley rotating as one attempts to lossen bolt issue w/ 4eats have
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Old 07-30-2003, 11:33 AM   #4
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The crank pulley should NOT wobble. It is a tell-tale sign that the crank bolt is not tightened enough.

The crank bolt needs to be tightened to a MINIMUM of 110 ft/lbs.

All the manuals, including factory manuals have too low a number, somewhere around 65 ft/lbs.

After re-torquing the crank bolt, then double check all your belts.

Jejunum, there are belt tensioners that you use to tighten them. I would probably recommend you get some one to give you hand if you decide to adjust yours.

On AT equipped cars, to install the crank pulley, or do any work that needs the removal of the crank pulley for that matter. The way to do this is as follows. On the passenger side of the bell housing of the AT, there is a little plastic plug. Remove that plug. You will now be able to see the flex plate that is bolted to the torque converter. Stick a breaker bar or some large metal bar down in there. It should catch on the flex plate. You may need to have someone hold it in place while you work on loosening the crank bolt.

Josh
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Old 07-30-2003, 03:58 PM   #5
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I had the belts tightened when it was in the shop getting headers installed. Perhaps they tightened the bolt aswell, (i stand corrected on the slight wobble) i will have to check if the pulley still wobbles. I remember it was for a while, but havent looked lately. perhaps the noise i was hearing was a combination of the wobbling and loose belts, either way i dont hear it anymore and i used to hear it every day.
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Old 07-31-2003, 09:52 AM   #6
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Yeah, I'll have it checked out ASAP. That noise worries me

Is it as simple as tightening the bolt on the crank pulley? What is a belt tensioner, and how would I use it to tighten the belts?
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Old 07-31-2003, 03:23 PM   #7
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If someone else installed the pulley, 99% chance it is too loose. they all torque it to factory spec which is wrong, as legacy777 mentioned. I found this out the hard way. make sure you have at LEAST 110-120 lbft on there.

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Old 07-31-2003, 09:09 PM   #8
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Yea i found out the hard way also. My belts started flying everywhere and my crank pulley's key got messed up.

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Old 08-01-2003, 09:54 AM   #9
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mine just plain fell off. I was happy cause up till that point I thought my bearings were shot.

so I got a new pulley from Subaru and they provided a new key and everything.

-IggDawg
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Old 08-04-2003, 01:00 PM   #10
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It turned out that just the belts were loose. After we tightened them back up, the noise and vibration stopped

Thanks guys!
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Old 08-04-2003, 02:53 PM   #11
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how much should it be tightened too? 165 ft/lb ?

120?

thnks!
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Old 08-05-2003, 09:05 AM   #12
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Quote:
Originally posted by Jejunum
how much should it be tightened too? 165 ft/lb ?

120?

thnks!
120-130 ft/lbs should be good
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Old 08-05-2003, 09:18 AM   #13
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I had emailed Mr Josh regarding how much to torque his pulley and he told me that it should be between 85-90 because it's aluminum. You guys are saying 110-120 if not more. I'm a little confused. I'm planning on installing the pulley this weekend and want to make sure that everything is done right. If you use locktight, could that eliminate the issue of the pulley getting loose?
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