Valve Adjustment Lock Nuts, Questions about the 10mm lock nuts Options

[914four]

I have found most of my questions using the search function but not all of them.

1.) Can you use larger thickness lock nuts for the valve adjustment screws? From numerous valve adjustments from awkward positions under the car I noticed that I have started slightly rounding the nuts, especially the one on the #2 exhaust valve. With the engine out I thought it might be a good time to replace them.

2.) From a quote in another thread:

Like I said, the 10mm units have a 14mm hex, thats nothing new.. Always been that way..

Everything on the engine has a torque...

Sorry to bring up such an old thread quote but I never new there was a torque setting for the lock nuts.

Can someone help me with the torque for the lock nuts? I thought it might be listed in the Haynes manual at the beginning of chapter one but I am unable to find it there. What is the torque setting for the lock nuts?

[type47]

Jake is the Master but I've never seen a torque spec for valve adjust screw jam nuts. And how the heck would you get a torque wrench in there to tighten it?!? If you are rounding off the jam nuts, are you using a box end wrench and not an open end? There is a stubby 14mm box end-open end wrench that would fit in the tight space for the job. I think the valve adjust screws are "very fine" pitch, certainly not 1.0-1.5, but if you could find nuts of the correct pitch, I don't see why you couldn't use them. However, I bet it's easier to find the correct factory nuts than thicker ones.