Stupid allen cam pulley bolts!
The useless allen head bolts on the cam pulleys are shot, one has rounded after a hour of wrenching and the second I cant budge but will probably round once its had the same amount of abuse.
Would a impact wrench with allen attachment work on these? How have others got them out I cant weld so I can see the rounded one is really going to cause problems. Also I am locking the cams using a spanner on the cams themselves as I had already taken off the cam belt... oops This method was fine for drivers side head but the other side is sooo much tighter |
Drill them out - nice sharp 4mm drill bit and cutting oil to start with, drill to just below the depth of the head of the bolt and then go through with a 10mm drill bit.
This will release the tension on the bolt and will come out with a allen key. Mick |
I grind the blooming things off, I find it's quicker and time is money ;-) had 2 yesterday, even broke a head a few weeks back!
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Cheers for the advice guys, my concern with drilling or cutting them off is whether I would get the rest of the bolt out after without damaging the thread in the head...
Haa I would however love to just grind the dam things off and replace with the 17mm version, hate wasting my time with annoying things like this. |
Once the head of the bolt has been drilled through to release the clamping force of it on the pulley, you can undo it by hand.
Mick |
Cheers Mick, I found this out this morning when I gave in and just drilled it. Will be buying 4 of the 17mm version I think.
For anyone else trying this, I also bought a allen attachment so I could use my impact gun.. This failed miserably |
have always used our own fabricated version of the Subaru pulley locking tool an never had any issues since (touching wood :cool:)
allows a far better "grip" than any other method and is also invaluable for the later "hollow" cammed cars |
Originally Posted by scooby87
(Post 11053890)
Cheers for the advice guys, my concern with drilling or cutting them off is whether I would get the rest of the bolt out after without damaging the thread in the head...
Haa I would however love to just grind the dam things off and replace with the 17mm version, hate wasting my time with annoying things like this. |
Don't suppose you want to mention what you made your special tool from haha?
Ohh really, I had better get some more allen ones then and hope I don't need to take them off again any time soon. |
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