Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks



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#364088 03/09/16 01:16 AM
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jim_Del Offline OP
Backyard Mechanic
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When checking my timing, the 12 degree mark wonders into an out of view leading me to conclude my distributor needs a rebuild. Are there things I might try, and or is there a company members might recommended for rebuilding services? Jim

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Hello jim Del,
You could try to borrow another known good distributor to verify that your distributor is good or bad, before rebuilding. Does your distributor's rotor and shaft move much when rotated by hand, indicating slop between cam and distributor gears? How about the bushings in the distributor, is the shaft wobbly or ok? If able, try rotating your engine's crankshaft clockwise and counter clockwise while watching the distributor's rotor for movement, possibly indicating slop in the timing gears. While your engine is running at idle, does it stay at a steady RPM or does it surge higher and lower RPM, following an advance and retard of timing? Let us know those answers, OK? Good Luck.

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How about the bushings in the distributor....

The 1932 distributor (model 633J) doesn't have bushings.

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jim_Del Offline OP
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My problem as it turned out was not exactly the distributor but rather the electrolock connection going into the distributor. There must have been a short which caused the erratic firing and thus the fluctuation of the timing mark. Who'd a thunk it!

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Who'd a thunk it!


Actually, that is a fairly common problem with the 1929-32 Chevrolet electrolocks.

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The Mangy Old Mutt

"If It's Not Junk.....It's Not Treasure!"

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