classic motorcycle forum
Motorcycle Discussions => British Bikes => Topic started by: 4stroke on November 01, 2014, 08:32:09 AM
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Has anyone ever come across this before, after removing the engine of my T140 the last thing I expected was not being able to separate the head from the barrel, every nut and bolt has been removed and a half tin of Wd40 used including wooden wedges, in the end I removed them both still joined together in the vain hope I would be able to get better access , I have rebuilt many engines over the years but have never had this problem, a solution would be welcomed.
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sounds like the alloy head has been crushed onto the stud thread (centre ones) . I would not use a wedge , turn the barrels upside down and with a wooden drift see if the head moves with a tap from inside , get another person to hold it off the floor
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You can also break the bond between the two by loosening the fasteners about 1 or 2 mm,and kicking the engine over compression.Some gaskets [not solid copper Triumph though]develop a very strong bond,and driving in wedges will cause severe damage.Regards John.