Posted by Leroy on August 11, 2014 at 04:53:03 from (69.88.207.185):
In Reply to: Head gasket posted by John Monforte on August 10, 2014 at 19:26:53:
There was never any thought of bolt stretch when that engine was designed or made and there were no torque specs for it as you just used the 11/16" box end wrench that came with that tractor. Stick with the studs, they only switched to bolts because the owner was needing to change gaskets everytime they did a valve job that was about every 2 years untill the valve rotator was developed and put in. And to do the valve job with studs you had to raise the hood and gas tank to get the head out, with the bolts there was just enough clearance to slide the head out but then without raising the gas tank there was just barly room if you had small hands to get in there and clean the old gasket off if it was not stuck too tightly. The bolts were just a way to cut costs in both the orignal cost and when the tractor was sent in to the dealer for the valve job. I have a 44 2N Dad bought new in May of 44 ( I came around in September of 43), and that tractor was used hard for everything on the farm from plowing to harvesting as it was his only tractor untill 57 when he bought a 38 John Deere A. And I remember him talking about those yearly valve jobs umtill it was equiped with the exaust valve rotators. I also have a 41 9N.
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