Happy New Year VFF !!!!! I am trying to figure out if my engine has been gone through before......I took off the valve cover (if anyone wants a Winfield valve cover PM me) to reseal and inspect because of leaks. I noticed a pretty big nut behind the valves in the middle of the motor on the bottom of the valley this nut is a Ny-Lock....pretty sure they didnt have this back in the day. What is this nut for its behind the distributor shaft i believe. Im at work and cannot get a picture of it at this time. Is the Ny-Lock safe in the heat??
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Castellated nut with cotter pin is what Ford used to lock a fastener.The problem with that arrangement is The fastener needs to loose its torque value before the cotter pin does its job.Modern locking arrangements are superior,though I dont use Nylocks on a torqued fastener they can be effective,I just did my mains with grade 8 nuts and hard washers,used a drop of loctite blue to lock the nut,unlike a Nylock,loctite doesnt alter the torque reading.
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Originally posted by Big hammer View PostRed nylocks are good for heat
White nylocks aren't
How much heat? It's been way too many years for me to remember :-(Last edited by Chevmn56; 01-01-2018, 02:07 PM.
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Originally posted by Chevmn56 View Post
Wow Ok it ois a white nylock while im waiting for a original valve cover to come i think i will replace it ....not sure with what yet.....does anyone know the torque value off the top of their head?
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"THERMAL PROPERTIES Most nylon insert locknuts are manufactured from Zytel 101 which has an effective temperature range up to 250 ° F. Zytel 103 has a higher effective range to 350 ° F and can be special ordered for your higher heat applications."
Remember, that nut is also cooled by the flow of oil in and around the valve chamber. I don't think there is a need to change it back to castle and cotter pin.You wana look waaay far up da road and plan yer route because the brakes are far more of a suggestion than a command!
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