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Re: Re: IH 450 pipe red runs rough
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Posted by Bob on February 03, 2004 at 06:28:36 from (66.163.134.177):
In Reply to: Re: IH 450 pipe red runs rough posted by RAB on February 02, 2004 at 23:08:07:
RAB, In "#2.)", you state "if point opening duration is too short, then the points gap should be decreased ". This is backwards. If the point opening duration is already too short, and you decrease the point gap, the points will open later and close sooner, so the point opening duration would become even shorter. Dwell is a measure of the rotation of the distributor cam, in degrees, that the points remain CLOSED between each spark. Dwell IS just as important on this low RPM tractor engine, because it is an indication of AVERAGE point gap, and, if you know the spec. for your engine, it allows the points to be set very accurately. If you know the factory spec's for dwell, and set your points accordingly, the gap will be correct.
Another good feature of setting the points with a dwell meter is that there is no chance that any oil residue that may be on the your feeler guage is going to contaminate your new breaker points.
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