Question only for point/dwell person
Tech Contributor
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From: At my Bar drinking and wrenching in Lafayette Colorado
Last edited by lars; Mar 29, 2010 at 03:38 PM.
Tech Contributor
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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
You're absolutely correct. Each one degree change in dwell will change timing 2 degrees because dwell is the number of degrees of camshaft travel that the points remain closed. I have edited and corrected the numbers in my previous posts to coincide with this factual correction.
), but the timing won't change two degrees. If you increase the dwell one (distributor/cam) degree, the dwell will turn on one half degree sooner, and end one half degree later. This one half (cam) degree delay (in points opening), multiplied by two, gives a one degree incremental retard to the spark timing.
Melting Slicks
Joined: Aug 2011
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Not trying to beat a dead horse (), but the timing won't change two degrees. If you increase the dwell one (distributor/cam) degree, the dwell will turn on one half degree sooner, and end one half degree later. This one half (cam) degree delay (in points opening), multiplied by two, gives a one degree incremental retard to the spark timing.
), but the timing won't change two degrees. If you increase the dwell one (distributor/cam) degree, the dwell will turn on one half degree sooner, and end one half degree later. This one half (cam) degree delay (in points opening), multiplied by two, gives a one degree incremental retard to the spark timing. I reset dwell to 32 degrees and my timing went to 8 degrees , which I then backed off to 4-5 degrees trying to eliminate a slight (lean ?) surge around 45-50 mph.
Melting Slicks
Joined: Aug 2011
Posts: 3,124
Likes: 259
FORD Motorcraft Points
I had the opportunity to go through a case (at least 100 sets) of FORD Motorcraft points and selected about 10 sets that had no up and down play in the breaker arm and had perfect contact alignment.
These are ventilated points and have 28 oz tension.
.
Anybody have any experience with these - when I get brave I will try running a set and see how they hold up.
