Rocker shaft assembly torque value - discrepancy

[dwill49965]

78 Westy, 2L FI. I have just re-sealed all of the push rod tubes (first time) and am re-assembling the rocker shaft assembly. What is the value for torquing the nuts down on the rocker shaft assembly?

There is a discrepancy between Tom Wilson's number in the "Rebuild ..." book - he says 18 ft-lbs (page 136). The yellow Type 2 Repair Manual (2nd ed) indicates 10 ft-lbs (diagram on page 15.2).

My gut feeling is to go with the Type 2 Repair manual, but thought I'd ask. This is quite a discrepancy in values, and I don't think splitting the difference would be wise (although tempting).

Any thoughts?
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Darryl
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'78 Westy, Boston Bob built 2.0 L, FI, MSD 6A

[Fusion]

You may get a lot of differing opinions on that question! I just did this and went with Wilson's torque value. The book seems to be highly recommended so figured I could trust it!
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1977 Westy -- In process of resurrection

[Randy in Maine]

My Wilson book says to do 10 foot pounds (page 154) on those 7mm "rocker shaft nut".

My Bentley (green cover) says to torque the nuts to 10 ft pounds on dual carb and FI engines and single carb engines to 18 foot pounds.

I would go with 10 myself.

[dwill49965]

Thanks a lot for the replies, guys. Randy - I hadn't checked the green bently before, but you're right, 10 ft-lbs. At least it agrees with the yellow manual. Just for completeness, I just checked the Haynes manual - and it also says 10 ft-lbs. So - here's what I did - 12 ft-lbs (before coming back to check the posts here)!!

The conclusion, I have too many manuals. (Oops, didn't check the Muir book - but its upstairs in the bathroom, so maybe I'll do it later.)

Thanks.
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Darryl
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'78 Westy, Boston Bob built 2.0 L, FI, MSD 6A

[dwill49965]

[germansupplyscott]

18 is for upright engines. 10 is for type 4 engines. they have different size rocker studs, so different torque values.
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SL