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Author Topic: Distributor end play  (Read 3976 times)
fireZ
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« on: November 09, 2008, 12:47:11 PM »

How much end play should a 1111266 dist.have? Mine has about  .015 end play and before I install it I would like to know if this is an ok tolerance.
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1968 Z28 LA Built
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L78 steve
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« Reply #1 on: November 09, 2008, 10:33:10 PM »

Its OK but you can shim it for less .
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69 Z/28 Dover White X33,ZL2,PS,M20,Std.int.04C
fireZ
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« Reply #2 on: November 10, 2008, 08:33:47 AM »

Is it better to have no end play or a little bit as I have?
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1968 Z28 LA Built
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« Reply #3 on: November 10, 2008, 04:48:52 PM »

*end play* on the distributor shaft results in 'ignition timing errors'..  so as little end play as possible, without unnencessary rotational friction, is better.  I'm sure the service manual has a spec on it.. I'd tend to go towards the low end of the spec range..
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe (2), 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
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fireZ
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« Reply #4 on: November 11, 2008, 09:03:55 AM »

I will try and look in the manual to see what they recommend. Thanks
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JohnZ
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« Reply #5 on: November 11, 2008, 10:18:20 AM »

The end play spec for decades was .002"-.007", but very few were actually built that way; .010"-.015" will work just fine.
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fireZ
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« Reply #6 on: November 11, 2008, 12:12:42 PM »

Thanks John ,I have mine at 0.012 so I guess I am in the ballpark
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1968 Z28 LA Built
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opelitis1
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« Reply #7 on: November 11, 2008, 02:29:51 PM »

What would be the cause of the end play "opening up" to say:  .035 - .040?
Ted
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JohnZ
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« Reply #8 on: November 12, 2008, 11:36:49 AM »

What would be the cause of the end play "opening up" to say:  .035 - .040?
Ted

Some were built that way, others open up due to wear on the shims between the top of the gear and the bottom of the housing.
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« Reply #9 on: December 15, 2008, 02:09:47 PM »

My original distributor needs shimming properly (badly)...  I've never ran it, but would like to set it up and run it now.   Where is the best source for a 'shim kit'?   Are they generally available in parts stores as a 'kit'?
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe (2), 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55 Nomad, '57 Nomad, '57 B/A Sedan
Hatman
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« Reply #10 on: December 15, 2008, 02:56:07 PM »

Moroso kit # 26140  Summit or Jegs Should have them.
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69Z28-RS
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« Reply #11 on: December 19, 2008, 03:35:54 PM »

Thanks..  I was going to visit the Chevy Dealer, but my local one was one of the 14 Chevrolet stores owned by Bill Heard, who went into bankruptcy....
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe (2), 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55 Nomad, '57 Nomad, '57 B/A Sedan
CVKUEBER
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« Reply #12 on: December 19, 2008, 05:29:43 PM »

GM part# is 1927529.  .005thick shim   Ware chev in TX shows two on on hand 1-800-890-9273 hope this helps, Cory
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GM parts-tech. Polar Chevrolet White Bear Lake, Mn
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« Reply #13 on: December 22, 2008, 06:20:56 PM »

Thanks...
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe (2), 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55 Nomad, '57 Nomad, '57 B/A Sedan
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