Author Topic: Major screw up...miracle required (broken bolt)  (Read 874 times)

Offline cyclobutch

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Re: Major screw up...miracle required (broken bolt)
« Reply #30 on: 07.01. 2019 16:12 »
Man that's good work. I'd barely wanted to read on from the earlier posts.
Various, including ...
'58 Iron Head Flash Bitza


Offline BSA_54A10

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Re: Major screw up...miracle required (broken bolt)
« Reply #31 on: 08.01. 2019 08:26 »
G'day Trevor.
The topic went a little sideways. Its not the pump but the sump where the problem is. A stud hole for the sump plate.
Cheers

I will claim old age .
On a sump plate hole, 50/50.
Lumiweld should hold if you can get the cases clean enough.
I would still go with a weld.
Or even an alloy plug peened so it can nor screw itself out then drill & tap a new hole for the stud.
Bike Beesa
Trevor

Offline Slymo

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Re: Major screw up...miracle required (broken bolt)
« Reply #32 on: 09.01. 2019 18:54 »
Ive used an alloy plug with a corse thread and high strength loctite to great effect in the past. If you are going to go on using a bolt rather than a stud though Id put in a steel insert.
NZ

Offline muskrat

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Re: Major screw up...miracle required (broken bolt)
« Reply #33 on: 09.01. 2019 19:09 »
Yes a plug of the same (similar) material if the hole is really buggered.
With my through bolting of the head and barrels I thread the head (alloy) bolt holes and make alloy studs to screw in and machine off. Then drill the holes 1/2 a hole off. Same with the barrels with cast iron studs.
Same could be done down there.
Cheers
'51 A7 plunger, '57 A7SS now A10CR, '76 XT500, '77 AG175 '83 CB1100F, '81 CB900F project.
Australia
Muskys Plunger A7