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A7 & A10 Engine
A7 1946-1950
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The BSA A7-A10 Forum
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Technical (Descriptive Topic Titles - Stay on Topic)
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A7 & A10 Engine
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Helicoil size
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Topic: Helicoil size (Read 358 times)
Beezabaker
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Join Date: Jan 2016
Posts: 6
Karma: 0
You can never have too many bikes
Helicoil size
«
on:
23.08. 2022 17:09 »
Hi, anyone know the size of the thread of the rockerbox studs into the head? As one has stripped so need a helicoil the right size. I'll fix the rockerbox leaking if it's the last thing I do. Four attempts now the threads gone......
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1963 Rocket Gold Star
1960 Golden Flash
Billybream
Resident Legend
Join Date: Jan 2012
Posts: 650
Karma: 8
Re: Helicoil size
«
Reply #1 on:
23.08. 2022 20:10 »
Same happened on my alloy head, purchased V coil, and worked a treat
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1960 Super Rocket, owned since 1966, back on the road 2012 after being laid up for 29yrs.
muskrat
Global Moderator
Wise & Enlightened
Join Date: Jul 2009
Posts: 10780
Karma: 130
Lithgow NSW Oz
Re: Helicoil size
«
Reply #2 on:
23.08. 2022 21:21 »
G'day Bb.
Both 5/16" BSW for iron and alloy head.
Cheers
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'51 A7 plunger, '57 A7SS racer now a A10CR, '78 XT500, '83 CB1100F, 88 HD FXST, 2000 CBR929RR ex Honda Australia Superbike .
Australia
Muskys Plunger A7
Beezabaker
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Join Date: Jan 2016
Posts: 6
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You can never have too many bikes
Re: Helicoil size
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Reply #3 on:
23.08. 2022 21:30 »
Great thanks for replies. I should have said Alloy head. V-Coil set looks good I’ve used them before for spark plug threads
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1963 Rocket Gold Star
1960 Golden Flash
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The BSA A7-A10 Forum
»
Technical (Descriptive Topic Titles - Stay on Topic)
»
A7 & A10 Engine
»
Helicoil size