Britbike forum Forums British Motorcycle specific Brands Triumph bulletin board pre unit head torque

...hello,
I only have the Haynes as pre unit manual (the A ST J Masters do not have torque specs); it s said that 18lbs/2.5kg is the torque used for all the bolts there.
I want to confirm if those numbers are right for an old worn pre unit
Is this alright for 500 Iron heads too?
Bear in mind that the head does not look like when new; around 70 years ago...may be more torque?

18 ft-lbs,if the threads are dry and not oily. Less if they are lubricated.

Pete is correct, there. More torque does not help at all. Just make sure the head gasket is annealed.

Dave

...ok; I used 18lbs and had the rings annealed; still not fired up due to I think I have a pushrod in bad place in the top part; it s very difficult to know if they are right or do not; at least with these small pre unit 500 boxes. I used grease in both places, but not checked trying to turn the motor because these early boxes moves with head bolts.
I hope to move it may be from the box inspection cap?

...not a pushrod problem; the pistons have kind of an edge and are .10 so they are stuck with the copper rings(washers)so I had to dismantle the rockers, gaskets, head, etc again, file down the inside part of the washers and re do all the steps.
Tomorrow (Each day I m traveling to another town where a friend let me use his complete set of tools)
I hope I can fire up the motor.

...fired in first kick. I put Champion L87 due to no stock of L82 or L86 s in the shops around.
The L82´s that I was using were bad in the test checking the spark. Lasted not so much; may be 2000kms or a bit more so I put those new ones.
May be all due to the problem in the flange of the sleeve turned the spark plugs in an stressed ones?

Anyway, thanks
for the responses.