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Old 06-24-2005, 08:45 PM   #1
Soon2BturbodRS
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06 Impreza OBS GG6
Corolla GT-S Hachi Broku

Unhappy Need Help or Advice ASAP!! Crank problems

So I started my car up today and there was a horrid noise from underhood. I pop it real quick and take a look... The crankshaft pulley bolt (the big 22mm one holding the pully onto the end of the crank) is loose, the pulley wobbling, and the accessory belt (power steering and alternator) is off.

The car has 126,869mi and this is the second time this has happened. The first time (121,702mi), everything came out okay, I put everything back together, torqued the bolt on and everything, and it was fine. This time, the pulley wouldn't go back on quite right.

After further investigation, it was obvious that the key on the crank has melted out of shape (pictures accompany description):


btw, the key is supposed to have 90-degree angles, not rolly-polly edges...

So, I called up the local Subie dealership (Lithia Subaru, Oregon City, OR) and they said there are two possible things they can do but both depend on how bad it is:
1. Re-work the crank and the key (~$550)
2. The car might need a new motor (~$3000-4000)

Can any of you tell me if the key is too mis-shaped to be fixed?? I want to get an opinion before I have it towed into the dealership because... If it needs a new engine, I don't know what to do. As much as I want to drop in a WRX motor I do not have the extra money for that... So if it needs a new engine, it's gotta go.

So what do you guys have to say? What should I do??

Thanks
-Ben
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Old 06-24-2005, 10:24 PM   #2
Tim Sanderson
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pull timing cover
rotate motor to align timing marks
mark belt
remove belt
try to remove wodruff key. A hammer(light taps) with a chisel or screwdriver should bring it up out of its groove.

If it comes out then you need to remove the crank sprocket and inspect it, the pulley, and the crank for damage.

Obviously you'll need a new key.

Just don't beat the crud out of it.

Good luck


Oh, btw, Your not supposed to cross post. It's a good way to get your stuff locked and then you'll get no answers.
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Old 06-24-2005, 11:42 PM   #3
Soon2BturbodRS
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More pics:
Here it is with the timing cover off...


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Old 06-25-2005, 02:35 PM   #4
Soon2BturbodRS
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Anything?
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Old 06-25-2005, 05:04 PM   #5
Uncle Scotty
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I would try to tease that out of there using anything that would fit on it....a small cold chisle...or a punch....or a screwdriver or whatever....and tap and tease and work it......that key is softer than the crank steel, so you should be able to remove it a bit at a time IF YOU ARE CAREFUL ! ! ! ! without damaging the crank.
I have done similar things, taking hours of time.....and saving $$$$ by being patient and persistant.

I'd have a pro re-install a new pulley with a new bolt, in a manner consistant with the FSM.....do not re-use either one!!!!!!
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Old 06-25-2005, 06:05 PM   #6
Soon2BturbodRS
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Thanks

FSM? What does that mean?

Anyways.. Is the crank sprocket supposed to just slide off? Because there is a little give. The end of the crank where the key is supposed to sit is slightly worked. The cam sprocket turns maybe 1-2degrees off center. How bad is this in relative terms to needing new crank (or similar)?

Thank you
-Ben
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Old 06-28-2005, 10:10 PM   #7
Tim Sanderson
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So, how is this going? Did you remove the belt as instructed? To answer your question, yes, the timing sprocket should slide off without much effort.

Hopefully it will come off without much effort. If so then the key should come out pretty easily.

Let's hear how it's going.
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Old 06-29-2005, 12:55 AM   #8
WRXRgr
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Quote:
Originally Posted by Soon2BturbodRS
FSM? What does that mean?
Factory Service Manual.
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Old 08-01-2005, 02:14 PM   #9
wrxyang
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My Perrin crank pulley is installed but I noticed that the 22 mm bolt when the engine is on wobbles quite a bit. I've post this dilemma on clubwrx.net as well but maybe could get some added advice here. Also, the pulley seems to rotate pretty smooth, it's just the bolt.
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