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#849828 05/24/21 11:03 am
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Hi all,
Anyone have thoughts on the torque settings for the rocker cover nuts?
I don't see anything specifically listed in the factory or Haynes manuals.
For now I'm just going with "snug".

This if for my '67 Lightning.

Thanks much.
Dennis


'67 BSA Lightning
'03 Triumph Speed Four
BSA on eBay
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Yeah I don't see it either but imagine it's pretty low like the Triumph rocker box torques at 5 ft/lb.


1966 BSA Lightning
(2) 1967 Triumph "Choppa"s
1974 Indian ME125
1960 Harley Servi-Car
1952 Harley 45" G motor in Paugho frame project
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As a rule of thumb, I always pick a torque setting for a similar thread somewhere else on the bike.. So Nicks suggestion is in the ball park, as the 1/4" x 26 manifold nuts on the T'bolt are set for 6 ft/lb in the BSA workshop manual.
For anyone with an OIF A65 with 5/16" rocker box studs and nuts, then you're probably looking at somewhere around 10 ft/lb.. HTH


Just a few Beezers..

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Rockers are not under pressure so "snug" is good enough. You don't want to put so much pressure as to potentially warp the gasket surface. This is especially critical of the two middle studs, as the cover "floats" at those two studs. Tightening too much in that area won't help with sealing and will likely do more harm than good.

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Originally Posted by MarcB
Rockers are not under pressure so "snug" is good enough. You don't want to put so much pressure as to potentially warp the gasket surface. This is especially critical of the two middle studs, as the cover "floats" at those two studs. Tightening too much in that area won't help with sealing and will likely do more harm than good.

+1


Now let’s all have a beer beerchug

68’ A65 Lightning “clubman”
71’ A65 823 Thunderbolt (now rebuilt)
67’ D10 sportsman (undergoing restoration)
68’ D14 trials (undergoing transformation)

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Thanks, all.
Good info to work from. I figured low was good, but nice to confirm it.

BTW, the hideous German helmet spike nuts that were on there for years have finally been replaced with some classier, domed, stainless nuts.


'67 BSA Lightning
'03 Triumph Speed Four

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