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206 Posts
I had to share this, so please humor me.
For over a year now I`ve been chasing an "overheat" condition on my son`s 64.....
here`s a "VERY" long thread from back then.
http://www.elcaminocentral.com/showthread.php?t=41948&highlight=hasbeen
I never did figure it out, and frustrated, just decided when it burnt up I would build it again. It`s had a few thousand miles on it since I stopped looking, but will still creep into the 220 degree range if idling very much.
Fast forward to this past Wednesday night when I was helping a friend work on his Airboat (SBC 350 Chevy) and the topic of Distributor / Vacuum advance came up.
We both had differing Ideas on how and when they function, or even why.
Yesterday morning he sent me a copy of an article that he had found explaining it in terms that made sense to me. A portion of the article made reference to "idle overheat"
regarding direct manifold vacuum source, rather than ported vacuum source (above the carb butterflies).
I couldn`t wait to get home and check out the 64.
Turns out I had it the vacuum advance on the "ported vacuum" location, so I moved it per the article.
After setting static timing, then checking with direct vacuum, and re-adjusting the carb mixture and idle speed, the car idled for over an hour at 190 degrees.
It just goes to show how the little things can really count.
Since I don`t know who wrote the article, I don`t know if I should post it, but if anybody wants a copy just p.m. me.
Thanks for the long read.
Hasbeen:texas:
For over a year now I`ve been chasing an "overheat" condition on my son`s 64.....
here`s a "VERY" long thread from back then.
http://www.elcaminocentral.com/showthread.php?t=41948&highlight=hasbeen
I never did figure it out, and frustrated, just decided when it burnt up I would build it again. It`s had a few thousand miles on it since I stopped looking, but will still creep into the 220 degree range if idling very much.
Fast forward to this past Wednesday night when I was helping a friend work on his Airboat (SBC 350 Chevy) and the topic of Distributor / Vacuum advance came up.
We both had differing Ideas on how and when they function, or even why.
Yesterday morning he sent me a copy of an article that he had found explaining it in terms that made sense to me. A portion of the article made reference to "idle overheat"
regarding direct manifold vacuum source, rather than ported vacuum source (above the carb butterflies).
I couldn`t wait to get home and check out the 64.
Turns out I had it the vacuum advance on the "ported vacuum" location, so I moved it per the article.
After setting static timing, then checking with direct vacuum, and re-adjusting the carb mixture and idle speed, the car idled for over an hour at 190 degrees.
It just goes to show how the little things can really count.
Since I don`t know who wrote the article, I don`t know if I should post it, but if anybody wants a copy just p.m. me.
Thanks for the long read.
Hasbeen:texas:
