Reverse Rotation Distributor Gear

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   The original Prestolite distributor is stuck in the block of my 85 SN 2001.  I actually have all the original receipts for the boat and it's been stuck in there at least since 1999. I threw a timing light on it the other day and it's about 12 degrees advanced from where it should be.

Since the original distributor is heavily corroded I am assuming about a 99% change of the housing breaking when I try to remove it.  I bought a new Mallory to replace it with.  The Mallory has a standard gear on it an I assume the Prestolite has the reverse gear.  Does anyone know if the Prestolite gear will fit on the Mallory distributor?  If so, any tips or tricks to swap them?

BTW the teeth on the Mallory distributor are angled like this:

       Top
      |   |
      |   |
     -------
    ////////
     -------
       | |

Thanks,
Chuck

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chuckactor Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: August-20-2013 Location: Ft Collins CO Status: Offline Points: 102	Post Options Post Reply Quote chuckactor Report Post Thanks(0) Quote Reply Topic: Reverse Rotation Distributor Gear Posted: October-07-2013 at 1:28am
	The original Prestolite distributor is stuck in the block of my 85 SN 2001. I actually have all the original receipts for the boat and it's been stuck in there at least since 1999. I threw a timing light on it the other day and it's about 12 degrees advanced from where it should be. Since the original distributor is heavily corroded I am assuming about a 99% change of the housing breaking when I try to remove it. I bought a new Mallory to replace it with. The Mallory has a standard gear on it an I assume the Prestolite has the reverse gear. Does anyone know if the Prestolite gear will fit on the Mallory distributor? If so, any tips or tricks to swap them? BTW the teeth on the Mallory distributor are angled like this: Top \| \| \| \| ------- //////// ------- \| \| Thanks, Chuck

TRBenj Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21171	Post Options Post Reply Quote TRBenj Report Post Thanks(0) Quote Reply Posted: October-07-2013 at 9:56am
	Chuck, youre correct that the Mallory has a standard rotation gear on it. A reverse rotation gear is cut \\\\. I dont know offhand if the Mallory and Prestolite gears can be swapped... Ive only swapped gears between like branded distributors. Perhaps if you measure the OD of the shaft on your Mallory, someone can measure their Prestolite for you. If it wont swap, I believe Mallory sells the reverse cut gears.

oldcuda Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: June-22-2010 Status: Offline Points: 474	Post Options Post Reply Quote oldcuda Report Post Thanks(0) Quote Reply Posted: October-07-2013 at 6:43pm
	Mic up the shaft there are two different diameters .491 and .500

Reverse Rotation Distributor Gear

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