Re: [Amc-list] Bronze Valve Guides & Seals

[Greg Taylor <amundaza@xxxxxxxxx>]

Bruce,
  Thanks for the good feedback on the bushing and seals.  I think that I am just going to have the machinist install bronze liners inside the AMC cast iron guides, since he can get them for a lot less than the cost of the big SBC bronze ones I emailed about.
   
  Also, I did not realize that the teflon seals were not desired for 'normal' use.  That's REALLY good to know!  Thanks!
   
  Sincerely,
  Greg Taylor :) <><
  
Bruce Hevner <scramblr@xxxxxxxxxxx> wrote:
  While using the guides you have referred to will work (I used to MAKE
Bronze guides) I have some advice from 40 years of using them. You
should NOT use the white Teflon seals with them, especially if it's a
street motor!!

The white Teflon seal is really for hi-performance use where spring size
will not allow anything else to fit. It does NOT work well on the street
under high vacuum conditions. I ONLY use them as a last resort where
nothing else will fit. You would not think something made from Teflon
would wear steel but they will! Hard chrome resists wear from the seal
pretty well but standard valves will end up with a "notch" where the
seal contacts it.


       
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