triumphdave
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| posted on 5/4/08 at 09:48 AM |
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XE crank pulley
I have been speaking to a few people about XE engines in general over the last couple of months,and it seems a few have had problems with the crank
pulley bolt coming loose and knackering valves etc.I suppose it could be down to not torquing it down correctly.My question is can anyone foresee any
problems with adding some stud loc to the bolt?.Has anybody know of this bolt coming loose on a properly torqued one?
If you always do what you have always done you will always get what you have always got
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jollygreengiant
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| posted on 5/4/08 at 09:51 AM |
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Don't use stud lock.
Never had a problem with one coming undone, however some are stretch bolts and should NOT be reused. buy a new one from main stealers if you are
unsure and do it up to the correct torque/angle.
Beware of the Goldfish in the tulip mines. The ONLY defence against them is smoking peanut butter sandwiches.
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chriscook
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| posted on 5/4/08 at 12:46 PM |
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Given the torque spec is something like 250Nm + 40-50deg I suspect that those that have come loose have not been done up tight enough or they have
re-used an old bolt (or both). To the get crank pulley bolt done up I always borrow a 750Nm torque wrench from work and turn it right up after
I've done the 250Nm bit.
I think SBD say to lubricate the threads not use threadlock.
Chris
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MkIndy7
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| posted on 5/4/08 at 12:49 PM |
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quote:
Originally posted by jollygreengiant
buy a new one from main stealers if you are unsure and do it up to the correct torque/angle.
I was told there no longer available from the VX dealers when I was after one a few months back so I re-used the old one, probably done about 2k harsh
ish miles since no problems.
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cidersurfer
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| posted on 5/4/08 at 02:34 PM |
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New bolts are available from Autovaux. Got one last month... 
People seem to think the woodruff keys is there to aid rotation. It's not. It's only a locator for the pulley. The bolt needs to be wound
right up or chances are the woodruff will fail and cause an expensive bill...
shimming solid lifters is a job for a friend...
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david walker
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| posted on 5/4/08 at 03:18 PM |
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XE crank bolts should be oiled for assembly and loctite should not be used. Also they are not a stretch bolt - would take some stretching
wouldn't they!
Dave Walker, Race Engine Services - 07957 454659 or 01636 671277
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jollygreengiant
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| posted on 5/4/08 at 03:52 PM |
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If they are not stretch bolts then why do they need replacing.
They need replacing because when you do them up you 'exceed' the bolts elastic limit. I think that by definition that kinda makes it a
'stretch' bolt.
Beware of the Goldfish in the tulip mines. The ONLY defence against them is smoking peanut butter sandwiches.
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chriscook
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| posted on 5/4/08 at 06:27 PM |
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Got mine from a vauxhall dealer a month or so ago no problem.
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triumphdave
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| posted on 7/4/08 at 11:41 AM |
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quote:
Originally posted by cidersurfer
New bolts are available from Autovaux. Got one last month...
Can confirm.Ordered one today.Thanks
If you always do what you have always done you will always get what you have always got
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vinnievector
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| posted on 7/4/08 at 01:46 PM |
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Belts and braces
If you have any doubts ,torq your new bolt to recomended load drill a 1 16 hole one flat to the other and one into the pulley and wire lock . have got
picks if your not sure wot i mean or how to wire lock
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NS Dev
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| posted on 7/4/08 at 09:09 PM |
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The bolt should be replaced as its cheap enough insurance and the torx heads get mangled after one undo anyway.
Don't use threadlock, you'll NEVER get it undone again.
lockwire would be as much use as a chocolate fireguard on this bolt!!!!  
if the bolt comes loose it shears the entire keyway out, don't think a bit of lockwire is going to help much!!!
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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