RE: Dwell Angle

[Dan McCormack <mcwheels@xxxxxxxxxxxx>]

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Tom, It's been a while since I've fooled with points because I've 
converted everything to electronic ignition but the dwell is determined 
by your points setting. If yours is too low you need to set your points 
closer together. You'd be surprised at how far off you can be by setting 
the points with a feeler guage. I assume you have a dwell meter since 
you know what the dwell angle is. After you reset the points and get the 
dwell reading right (usualy around 30-32 is good for a V8) then you can 
check your timing (after your trip to Sears LOL) Unhook and block off 
your vacuum advance first. BTW your timing will change with engine speed 
but not your dwell reading, If your dwell is changing with engine speed 
you probably have a worn distributor shaft. Your rough idle may also be 
a carb or vacuum leak problem.

Hope that helps, Dan

Here's a web site you may want to check out on setting points.

http://www.allpar.com/fix/points.html


Tom Duross wrote:
> 
> 
> Hi Campers,
> 
> Just what is this thing called a dwell angle?
> 
> My 64 Belv's poly started running rough at idle the past few, no maybe 
> the past couple of weeks.

> Checked the points, right around 015", maybe 017" but right there with 
> the specs (014-019).

> The dwell angle though, I couldn't get up past 26-27 degrees and it's 
> supposed to be 28-33.
> Should I have checked the timing?  I can't right now because I dropped 
> the timing light into the fan.  :P
> Ka-POW!  You should have seen the cat and dog bolt!  Man, right out from 
> under the car (cah).
> I have to get another one soon.  I will tomorrow, probably at Sears.
> 
> So what is this dwell angle telling me?  Is it advance?  It drops when I 
> speed the engine up.
> I'm embarrassed to admit that I don't know just what this measurement 
> is.
> Can you guys help (and don't tell anyone)?
> 
> Tom Duross
> [Non-text portions of this message have been removed]
> 

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