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Distributor Rotor question on a 1957 dizzy

Posted By Melly 4 Years Ago
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Melly
General Posted 4 Years Ago
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I replaced my rotor and cap some time ago ( 1 1/2 year ).  Started having issuses with high speed rpm ( just was not running good )  A course over looking the simple check everything but the basic.  Finely pulled cap and rotor and low and behold the problem.  
So when replacing the new rotor seamed to not be a tight fit as the one that came off.  I think that because of this the rotor must move up and down on on shaft causing it to dig into cap.  i looked over everything on dizzy all seams good, so I go back to this loose fitting rotor.  Went to three different parts store and all rotors seam to be a loose fit.
Has anyone else had this problems, or am I just not seeing something. Where might I find a rotor that has the tight fit?    
55blacktie
Posted 4 Years Ago
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Does your distributor rotor require a spring clip?
Melly
Posted 4 Years Ago
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i have been doing some read and  I think is must.  Trying to find a source that i can find one that doesn't require a week of shipping.  Any ideas?

55blacktie
Posted 4 Years Ago
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Might be worth the wait if it means getting exactly what you need. Before you order, make sure you know exactly what distributor you have. Seems to me that the correct rotor should come with the clip. 
Melly
Posted 4 Years Ago
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That’s what I tried to tell each place but they all seemed to not have a clue. It seems it a clip that goes around shaft of dizzy
Stiggy
Posted 4 Years Ago
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The clip is fitted to the distributor shaft ~ there's 2 slightly different grooves
in the shaft that the clip attaches to..  
Hoosier Hurricane
Posted 4 Years Ago
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A '57 distributor doesn't have a clip, '56 and earlier does.  Do you have an aftermarket electronic conversion kit?  I had one, and the rotor seated on the reluctor ring and prevented the rotor from seating on the shaft.  The result was that the rotor hit the terminals in the cap.  The fix was to remove about 1/4 inch from the bottom of the rotor so it could seat on the shaft properly.

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Lord Gaga
Posted 4 Years Ago
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Use some shim stock.



"FREE SAMPLE"
57RancheroJim
Posted 4 Years Ago
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Hoosier Hurricane (9/29/2021)
A '57 distributor doesn't have a clip, '56 and earlier does.  Do you have an aftermarket electronic conversion kit?  I had one, and the rotor seated on the reluctor ring and prevented the rotor from seating on the shaft.  The result was that the rotor hit the terminals in the cap.  The fix was to remove about 1/4 inch from the bottom of the rotor so it could seat on the shaft properly.
X2, I did the same when I converted to Pertronix, I only removed about 1/8" - 3/16" and that cured it.

KULTULZ
Posted 4 Years Ago
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... the rotor seated on the reluctor ring and prevented the rotor from seating on the shaft.  The result was that the rotor hit the terminals in the cap ...


...hmmpf ...

THANX! for that info!



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