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RH4 cylinder head

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Hi can anybody help? I am trying to put the cyl head onto my Mk.11a Commando but upon lowering the head to the barrel, the gap of the valve clearance is about ? of an inch even with the adjusters all the way down. The valves are the right length as are the pushrods. The head is an RH4. Any help would be gratefully received.

Many thanksDave

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Hi-can-anybody-help.doc

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Hi Dave,

Can I ask a couple of questions, Is this a build from a kit of bits or is this the head of the bike ?

What I mean is what has changed ?

Regards

Tony

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Did the head go on without at least one of the valves trying to open ? ie was there a gap under the head before you inserted the head bolts and tightened them down ? If NOT then there is a miss match between pushrods/ cam followers/ rockers/valves.

Are you sure that the pushrod cups have seated properly on the valves?

 



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