Dwell for setting point gap of Ford 600

KlinkSanford

New User
From a 2004 thread of YT, Dell said:

Jim..... ...most dwell specifications are about 2/3's of the camshaft rotation. ...ie...
4-cyl is 360/4 = 90* rotation; 2/3's = 60* dwell
6-cyl is 360/6 = 60* rotation; 2/3's = 45* dwell
8-cyl is 360/8 = 45* rotation; 2/3's = 30* dwell
I use 55-60* dwell on my 1952 8N sidemount distributor. I set for the wider 55* and as the rubbing block wears the gap gets narrower and the dwell gets longer...If you don't like my dwell explanation, install new points gapped to 0.025 and make your own dwell measurement..Dell END

I'm fixing my neighbor's 640 and used the dwell 55 as recomended above and found that the point gap is .010, when it is supposed to be .025. The carb was not working right
when I gapped it to .025, and it is still not working right at the dwell 55 gap .010. What would cause the dwell and point gap to be so far apart?
 
Assuming your measurement is correct, about the only thing that comes to mind is worn cam lobes. FO-20 I&T shows 58-63.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top