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Dizzy Wobble

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1974F100
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Dizzy Wobble

Post #1 by 1974F100 » Sun Apr 12, 2009 6:07 pm

I finally fixed my rear main seal leak and needed some more input. When I loosen the dizzy to set the timing, it is oscelating or wobbling. Is something terribly wrong, or is this normal? It seems fine once I retighten the hold down bolt. Any help or feedback appreciated.

Thanks,
Greg

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THE FRENCHTOWN FLYER
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Post #2 by THE FRENCHTOWN FLYER » Sun Apr 12, 2009 9:37 pm

A small amount of wobble (1/16"?) is not uncommon, but excessive wear can be. Once you have the distributor clamp tightened disconnect and plug the vacuum advance and put a timing light on it. If the marks dance around by more than +/_ a degree then you probably need to rebuild the distributor. Do this check at several speeds.
FORD 300 INLINE SIX - THE BEST KEPT SECRET IN DRAG RACING

1974F100
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Post #3 by 1974F100 » Sun Apr 12, 2009 11:16 pm

It's a remanufactured distributor. The wobble is the entire distributor housing that is wobbling in the block. I've never messed with these 300's before, but I've done a lot of 302's and 351's and I've never seen this before. This is a fresh, rebuilt engine. I didn't know if maybe my cam gear is not running true or if something else might be out of wack or is it just normal on these motors.

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Post #4 by THE FRENCHTOWN FLYER » Sun Apr 12, 2009 11:19 pm

You could always pull it out and check for a bent shaft.

Or replace the rubber O-ring seal.
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The Plankster Prankster
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Post #5 by The Plankster Prankster » Mon Apr 13, 2009 1:33 am

so by the sound of it, your wobble is only between the housing and the block, so i think its fair to say that the internal workings are fine and its only out outside fit thats loose.
i believe there's supposed to be an O-ring on the outside of the dizzy's body to seal it against the block, if thats missing it may be just about the amount of slop you're dealing with.
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Post #6 by AbandonedBronco » Mon Apr 13, 2009 9:24 am

For what it's worth, I bought a remanufactured distributor for mine, and it went out in just a few months. It wobbled so bad that the rotor cut into all of the connections on the cap.

Warranties are nice.
1985 Ford Bronco Eddie Bauer. 300 I6. 9.1:1 CR, roller rockers, EFI manifolds and 2.5" exhaust. DUI ignition. 3.55 final drive, 5 speed ZF5. Holley Sniper EFI w/Offenhauser C Intake. 32" BFG KO2 A/Ts.

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Post #7 by American Thunder » Mon Apr 13, 2009 10:22 pm

The last time I saw a distributor wobble was when I had a slightly bent oil pump driveshaft in my old 300 from a junkyard.
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Post #8 by willowbilly3 » Wed Apr 15, 2009 7:39 am

I bought a reman DS distributor for my 72 when I converted it and noticed that bad wobble. I took it back and got another, same thing, 4 different remans and the same thing, bad wobble. I went to a junkyard and pulled one from an old van and it was fine. My conclusion, just one more reason that reman stuff is junk.
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noblesteed
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Post #9 by noblesteed » Wed Apr 15, 2009 9:25 pm

no distributor wobble compares to a 1954 chev truck with a 235 cid engine.I am just now tuning one for my boss.it's very loose in the block(way more than 1/16 inch) and it has the oddest vacuum advance unit on it,the bottom of the dizzy is clamped to the advance unit and the whole thing turns in the block to advance,weird stuff those old bowties,teased my boss that the 300 cid ford six purrs way better than the 235...there goes my raise ...bottom line love my 300...getting a rash from the 235 :)

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