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Post by panzermatt on Sept 17, 2018 19:24:44 GMT 1
Need advice lads, my right hand barrel (31k) is stuck. but only on one stud, the front right beside water pump. the back two are free as is the front left, you can pry the barrel up on all three corners. i have tried oil, 3 days and nights now, then a blow torch. but i'm afraid ill break the top crankcase is i get too agricultural with it. any tricks of'the trade would be much appreciated before i smash up my shed. thanks lads.
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Post by cb250g5 on Sept 17, 2018 19:53:42 GMT 1
Diesel. A very runny oil.
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Post by steve h on Sept 17, 2018 19:58:05 GMT 1
Blow torch in conjunction with a tin of the freezing spray from a plumbers outlet?
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Post by mikee on Sept 18, 2018 6:44:52 GMT 1
Build a well around it from blue tack and fill it with coke (fizzy drink stuff ) and leave it a day or two
Mike
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Post by rigga on Sept 18, 2018 7:36:50 GMT 1
50/50 mix of ATF and acetone (nail varnish remover) works well
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Post by earthman on Sept 18, 2018 7:42:26 GMT 1
Apart from keep tapping gently with a rubber mallet, I can't think of anything to add really.
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Post by panzermatt on Sept 18, 2018 20:26:32 GMT 1
 . The offending stud. |
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Post by panzermatt on Sept 18, 2018 20:27:22 GMT 1
 Blue tack dam, with Coca Cola in |
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Post by panzermatt on Sept 18, 2018 20:27:40 GMT 1
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Post by dusty350 on Sept 18, 2018 20:51:41 GMT 1
Have you been whacking that exhaust stud ?  Dusty |
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Post by panzermatt on Sept 18, 2018 20:56:26 GMT 1
it fell of the bench dusty, i swear!
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Post by 4l04ever on Sept 18, 2018 21:02:11 GMT 1
Try PlusGas
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Post by dusty350 on Sept 18, 2018 21:13:40 GMT 1
Haha, that has taken a beating !! Just be careful as I have seen barrels with a broken casting around the exhaust studs before - probably for the same reasons.
Could you use a jack and position something into the exhaust port - cut down wooden broom handle or something like it - and jack it up so there is some upward pressure on the barrel ? Not enough to lift the bike off the floor but enough to take some of it's weight ?
Dusty
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Post by panzermatt on Sept 18, 2018 21:30:08 GMT 1
I’ll see how the coke works out. A few days, then I’ll jack it
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Post by Tobyjugs on Sept 19, 2018 10:19:46 GMT 1
I have a feeling the aluminium has mushroomed into the hole. Causing the hole to hang up on the studs thread.
Can you fix two nuts on it and try to screw the stud out?
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Post by 4l04ever on Sept 19, 2018 12:42:36 GMT 1
I have a feeling the aluminium has mushroomed into the hole. Causing the hole to hang up on the studs thread. Can you fix two nuts on it and try to screw the stud out? Maybe two half-nuts, as there does not appear to be much thread showing... |
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Post by greeny on Sept 19, 2018 13:46:55 GMT 1
I appreciate your trying allkinds.
I saw a video the other day and brake fluid appears to work the best for penetrating oil.
It was tested against a lot of other canned options..
Hope you win this battle...
Regards
E
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Post by bare on Sept 19, 2018 17:48:21 GMT 1
Care.. with trying to unscrew that stud These have a propensity to snap off .. rather easily
(yup I've done a few ) Possibly even more easily if the thing is corroded to the cyl base
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Post by panzermatt on Sept 19, 2018 18:03:43 GMT 1
brake fluid? ill try that if the coke doesnt work.
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Post by JonW on Sept 20, 2018 14:07:55 GMT 1
Sorry, but I cant see brake fluid helping.
I think you need to heat the alloy of the cylinder up to expand it, then lever it up off the stud.
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Post by panzermatt on Sept 20, 2018 17:52:47 GMT 1
Sorry, but I cant see brake fluid helping. I think you need to heat the alloy of the cylinder up to expand it, then lever it up off the stud. I Tried heating it with a blow torch no joy. im going to try the brake fluid. |
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Post by panzermatt on Sept 20, 2018 17:54:23 GMT 1
I have a feeling the aluminium has mushroomed into the hole. Causing the hole to hang up on the studs thread. Can you fix two nuts on it and try to screw the stud out? i though about this, if i just get the stud to turn a small bit surely that will break the bond? |
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Post by Tobyjugs on Sept 20, 2018 18:19:17 GMT 1
IF it is what I quoted it will be mechanically stopped by the thread. You explained that you could move it on the other three corners. This would in my opinion suggest it's not tight.
The way to see if my suggestion is correct would be to loosen the stud. If you can loosen the stud (as in screw it out a turn or 2) the barrel would become looser and more movable.
If the aluminium has deformed into the hole it will make the diameter of the hole smaller causing the aluminium burr to stop the threaded stud to pass through the smaller hole.
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Post by mikee on Sept 20, 2018 18:34:36 GMT 1
IF it is what I quoted it will be mechanically stopped by the thread. You explained that you could move it on the other three corners. This would in my opinion suggest it's not tight. The way to see if my suggestion is correct would be to loosen the stud. If you can loosen the stud (as in screw it out a turn or 2) the barrel would become looser and more movable. If the aluminium has deformed into the hole it will make the diameter of the hole smaller causing the aluminium burr to stop the threaded stud to pass through the smaller hole. Yup , been fitted without, washers at some point maybe Mike |
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Post by panzermatt on Sept 20, 2018 19:05:57 GMT 1
 Coca Cola works! |
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Post by panzermatt on Sept 20, 2018 19:12:04 GMT 1
thanks mike! i didnt damage anything either. unusual for me. i still applied heat and oil after though. but the coke definitly loosened the bond.
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Post by steeley on Sept 20, 2018 19:16:44 GMT 1
Nice . Ah ,coca cola that would be the phosphoric acid in it .
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Post by greeny on Sept 21, 2018 10:59:09 GMT 1
Nice work.
Glad you won....
Recap though.....
Are you saying that if you drink coke you will become a right stud?
Best wishes
E
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