[TR] Tab washers

[Tony Drews]

John Deere did a big study on this and found that loctite is the way to 
go.  The tab washers seem so obviously to be a good thing, but they 
didn't work very well, and the softness of them allows torque values to 
decrease as they wear - proper torque is critical.

Cheers, Tony Drews


On 9/26/2018 3:42 PM, Randall wrote:
> I don't like tabs on rod bolts. They are much softer than the rod or 
> bolt, so they can crush and let the bolt loosen even though it doesn't 
> turn. This effect has been mentioned both by Caroll Smith and by Kas 
> Kastner in their respective books on race car preparation.
>
> I also had a tab break off once, and find it's way into the oil pump. 
> Fortunately no serious harm done, I heard the change in engine sound 
> and shut it down before any serious damage happened. But it still 
> caused me to miss a club drive that I was rather looking forward to; 
> and of course it had to come home on a flatbed. Not a pleasant day!
>
> That was over 20 years ago and I've been using oil resistant Loctite 
> (on standard bolts) instead of tabs ever since.
>
> Check to be sure the bolts aren't too long, by threading them into the 
> rod without the cap with only light finger pressure and then comparing 
> the height of the cap with the resulting gap. None of mine were too 
> long on 2 different engines, but its worth double checking. ISTR Kas 
> mentioned that too.
> -- Randall
>
>
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