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By JimNNN - 4 Years Ago
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Hi. For some reason, I didn't see a torque spec for the rocker shaft cap bolts in the shop manual for my '54 EBU 239. Does anyone know what that should be?
The lock nuts for the rocker adjusters are supposed to tightened to 30-35 ft. lb.s I think. Thanks - Jim
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By PF Arcand - 4 Years Ago
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Duh! Maybe I'm having another dull moment?.. Am I the only one that does not understand your question?.. Cap bolts?
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By JimNNN - 4 Years Ago
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I'm probably not using the right terminology. I don't have the shop manual with me at the moment.
The rocker shaft is held in place by what I'm calling caps, but they're brackets really. Two bolts each, except for the the locations that have studs (for the valve cover nuts.)
I need the torque spec for these bolts that fasten the rocker shaft to the head...if it exists. I didn't see a spec in the shop manual, but I may have missed it. Thanks.
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By KULTULZ - 4 Years Ago
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In the TORQUE LIMITS (1954 FORD WSM) chart, look @ Rocker Shaft to Cylinder Head.
I think that is what you want.
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By Tedster - 4 Years Ago
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What size are the bolts? Shank size. Are they the same as in later Ys? For those, it's listed as 12 to 15 ft/lbs.
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By Ted - 4 Years Ago
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The‘57 Service Manual specifies 12-15 Foot-Pounds for the rocker arm support bolts (rocker shaft to cylinder head).
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By JimNNN - 4 Years Ago
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KULTULZ (7/23/2021)
In the TORQUE LIMITS (1954 FORD WSM) chart, look @ Rocker Shaft to Cylinder Head. I think that is what you want.
Thanks KULTULZ, Tedster and Ted. I figured I missed the info in the manual. You've been a big help.
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By Tedster - 4 Years Ago
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It might take a few heat cycles and cool downs for the bolts to stabilize, so re-torque or torque check them. 15 foot pounds is not a lot. If I'm thinking of the geometry correctly the valve lash clearance might be affected slightly until they settle down.
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By paul2748 - 4 Years Ago
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I was helping a friend put together a 312 and that question came up. Found it in the 56 shop manual, it was as Ted had noted.
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By JimNNN - 4 Years Ago
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Yes, I should've mentioned for the benefit of others that I found the specification in the '54 manual (addendum) where KULTULZ said, and the proper torque was 12-15 foot pounds like the other years' applications. I was looking for the number in the text because the rocker lock nut torque was stated there. It was in the spec section in the torque limit table, where I should've looked first.
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By DryLakesRacer - 4 Years Ago
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If you know the grade of the cap screw (bolt) and the threads per inch the internet information is always good when you don’t have access to a manual.
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By paul2748 - 4 Years Ago
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My 56 Shop Manual had general torque settings by diameter of the bolt besides the specific torque settings...
DryLakesRacer (7/24/2021)
If you know the grade of the cap screw (bolt) and the threads per inch the internet information is always good when you don’t have access to a manual.
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