Author Topic: Major screw up...miracle required (broken bolt)  (Read 1158 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

Online 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,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7