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RB35
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Group: Forum Members
Last Active: 7 Years Ago
Posts: 48,
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I'min the process of disassembling a 292 (my first),getting it ready for a rebuild. Today, I dissed the dizzy to clean it up. No cap, rotor or points/cond, so I'm not sure of the relationship of the rotor to the points arm/ass'y. Could the wrong rotor move the stationary point to a closed position?? I did notice that the bottom end of the shaft had a "stop" collar pinned un just under the dizzy body. Wonering if that was loose or missing if that could affect the advance plate, pushing it up and somehow messing with the points. Probably not and I'm just shooting in the dark here. RB
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Rods
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Group: Forum Members
Last Active: 8 Years Ago
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I have decided to pull the distributor and send it to Colorado to be rebuilt. Then I can at least eliminate that aspect. Any other thoughts as to cause, I am listening!  Thanks ~ Rod
1957 Thunderbird
312
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Rods
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Group: Forum Members
Last Active: 8 Years Ago
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Hoosier Hurricane (8/1/2009)
Rod:
If your Bird has the correct pulley, the timing marks are on the pulley, not on the damper ring. Ring slippage has no effect on your timing marks.Well it is original so it should be correct then. ~ thanks
1957 Thunderbird
312
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Rods
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Group: Forum Members
Last Active: 8 Years Ago
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RB35 (7/31/2009)
When the car stops and you have to re set the points, you mentioned that if you put the high point on the rub block, they were still closed. Did you try wiggling the dist shaft while in that position to see if you got a worn shaft and the wobble bangs them closed? Did you try to reset the points without loosening the screw to see ifit's posible the screwappears tight, but maybe too long and not securing the pointstight?
RBWhen it does quit, I do have to reset. I measured the lobes and all are same; I did try to wiggle the shaft, thinking the same thing you did. I also tried to move the points and they were on good and tight. Mechanic ran into this same thing. It happens spratically. May run for a week, a day, a hour, or just backing out of the garage and then just quit.
1957 Thunderbird
312
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Hoosier Hurricane
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Group: Moderators
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Rod: If your Bird has the correct pulley, the timing marks are on the pulley, not on the damper ring. Ring slippage has no effect on your timing marks.
John - "The Hoosier Hurricane"
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John Mummert
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Group: Forum Members
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One thought comes to my mind. Perhaps the disributor shaft binds on the steel bushing in the distributor body sometimes. You set the points and as long as the shaft turns in the bushing all is okay. Then it binds up and the bushing turns. If things are no longer concentric the points close and it stops running. You reset the points and start the procedure again. That's my best guess.
http://ford-y-block.com 20 miles east of San Diego, 20 miles north of Mexico 
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RB35
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Group: Forum Members
Last Active: 7 Years Ago
Posts: 48,
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When the car stops and you have to re set the points, you mentioned that if you put the high point on the rub block, they were still closed. Did you try wiggling the dist shaft while in that position to see if you got a worn shaft and the wobble bangs them closed? Did you try to reset the points without loosening the screw to see if it's posible the screw appears tight, but maybe too long and not securing the points tight? RB
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charliemccraney
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Group: Moderators
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Rods (7/31/2009)
** UPDATE **
Is still use of the vacuum advance if you go with electronic points?
Yes, you still use the vacuum advance.
Lawrenceville, GA
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Rods
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Group: Forum Members
Last Active: 8 Years Ago
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** UPDATE ** We found the harmonic balance loose and tightened it up. Now we still are having problem with the timing. We will be checking to see if this balancer has that rubber insert which might allow for slipage or not. I had a new distributor gear sent and we installed it. Still having problems with the timing and points closing. Guess this puts us into the distributor itself category. Wondering if I switch to pertronix would I still need to mess with rebuilding the distributor? Is still use of the vacuum advance if you go with electronic points? Appreciate your comments. Rod P.S. Work done so far: points, distributor gear, tightened harmonic balancer, new vacuum advance, VA tubing, carb rebuilt, push rods....
1957 Thunderbird
312
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pegleg
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Rodspaul2748 (7/24/2009)
Quite obviously the problem arises in the distributor as the point close up. The other answers have given you something to look at.
With the exception of the 54 distributor, all YBlock distributors will interchange, regardless whether its off a 272, 292 or 312. The 55 and 56 ones will not work correctly with a later carb.
and A new timing chain or a new gear will not fix the points problem.
Beg, borrow or buy a 57 or later distributor that you know is good. Put in it n the car. If the problem goes away you then know that your distributor is bad and must be repaired. It seems to me you are flogging a dead horse with your current distributor.
I'll second that motion and add that if you'll send the distributor to someone who understands all that's been said, he will find the issue and, if it's possible, fix it. Also you might consider a Pertronix or other electronic triggering unit AFTER you discover the issue with the distributor. Points are pretty much passe` at this point in time.
Frank/Rebop Bristol, In ( by Elkhart) 
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