Refurbishing threads

[norbert]

pushrod lengths front/rear

350: 182/184
500: 205/207
501: 202/204

[AntietamClassicCycle]

As far as I am aware, there is supposed to be some 'give' available in the push-rod ends to provide some protection in case if the cam-belt breaking. Should that happen. the theory is that the push-rod can ' compress' so as to minimise damage to valve stems if they come into contact with the piston head.
I had it happen once on a Kanguro and ended up using the compressed rods until I obtained some replacements. It worked just the same, but without the 'safety' aspect.

But, I wouldn't think they should "give" in normal running, which was what happened in my case.

[Ming]

... I wouldn't think they should "give" in normal running, which was what happened in my case.

Good point...