[Healeys] HD8 Slow Run Valve

[Bob Spidell]

Oops ... 

"I don't like the idea of the two strong throttle return screws" should be "throttle return SPRINGS" 

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Bob Spidell - San Jose, CA 



Well, we're arguing nits here, but .... 

re: " Using the throttle butterfly, you have issues of throttle linkage, dissimilar metals (brass, aluminum & steel) and fast idle screw wobble." 

I submit none of these are a factor, since at idle the throttles are stopped (on my car) by the throttle stop screws. The linkage is not in play--except to pull the throttle shafts to the stops--nor is the fast idle screw (there should be some clearance between the fast idle screw and the cam at idle) and any metal dissimilarity is insignificant (if you set everything when the engine is hot--like it'll be when you're driving--differing metal coefficients of expansion are automatically compensated for). 

I don't like the idea of the two strong throttle return screws slamming the throttle plates shut in the (soft aluminum) carb throat--I believe you'll wear a groove eventually. I also prefer to idle a little faster, so I'm getting electrical power from the generator and not draining the battery (with a generator, at least with mine, you're running off the battery until around 650-700rpm). 


bs 
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Bob Spidell - San Jose, CA