The Ford Barn

Benson · 08-04-2018, 08:42 AM

As mentioned above could be point gap has changed that is it has become smaller.

50 years ago I could put a set of points in and 4000 miles later point gap would be fairly close to what I set it at.

Nowadays the point gap can reduce to almost nothing in under 100 miles, to the point where you get problems like you see.

The solution is to check and adjust gap several times like at 100, 200 and again at 300 miles until the gap stops changing.

What happens is that the rubbing block "work hardens" as it wears. Finally it gets to a point where it will change very little when you check.

Then you can go for a long time without any wear.

I have no idea why they can no longer make a rubbing block on points which will last longer!

Maybe some Bean Counter can chime in and tell us how many millionths of a cent they save on each set of points by using cheap materials!!

08-04-2018, 08:42 AM	#1
Benson Senior Member Join Date: May 2010 Location: Cen~Col - Central Highlands Posts: 2,757	Re: 1929 model a back fire As mentioned above could be point gap has changed that is it has become smaller. 50 years ago I could put a set of points in and 4000 miles later point gap would be fairly close to what I set it at. Nowadays the point gap can reduce to almost nothing in under 100 miles, to the point where you get problems like you see. The solution is to check and adjust gap several times like at 100, 200 and again at 300 miles until the gap stops changing. What happens is that the rubbing block "work hardens" as it wears. Finally it gets to a point where it will change very little when you check. Then you can go for a long time without any wear. I have no idea why they can no longer make a rubbing block on points which will last longer! Maybe some Bean Counter can chime in and tell us how many millionths of a cent they save on each set of points by using cheap materials!! Last edited by Benson; 08-04-2018 at 08:47 AM.