distrib gear play

Discussion in 'PSI Superchargers Tech Questions' started by danny, Jan 7, 2008.

  1. danny

    danny compet elimin

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    hi how match play needs to be between the distrib gear and the blok?we have .008 now but was .062 before and the gear was damaged after only 25 runs?:rolleyes: thanks danny
     
    #1
    danny, Jan 7, 2008
  2. craig moss

    craig moss Member

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    gear

    need more info what kind of block what type of damage and where
     
    #2
    craig moss, Jan 13, 2008
  3. danny

    danny compet elimin

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    distrib gear

    Hi Craig
    We bought a used bae engine with 30 runs on it since new,it's a forged bae block.
    The cam is not damaged but the bronze gear tooth pattern is not in a good shape,like a bad adjusted pinion ring gear:).
    We have the play between the gear and the bronze bushing in the block @
    .008 at the moment,the same as we did in our old KB engine .thanks danny
     
    #3
    danny, Jan 15, 2008
  4. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    25-35 runs

    it's not uncommon to need to replace that bronze gear on the mag drive from 25-35 runs, especially if you are running your timing off the mag.

    if you are running timing off the mag, it's not uncommon to have very little to no endplay on the cam. the less endplay, the less variation in timing from idle to 3500 rpm.

    after monitoring timing off the mag, we immediately switched to the leahy trigger set up.
     
    #4
    Will Hanna, Jan 15, 2008
  5. danny

    danny compet elimin

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    distrib

    Hi Will we have the trigger set up but we have not run this engine yet:(. We have seen wear on the gear when we took it out off the engine and we have put a new one on but wanted to know how mutch play it needs;) On our old engine we never had any problems with the gear :confused:thanks danny
     
    #5
    danny, Jan 15, 2008
  6. 23T Hemmee

    23T Hemmee Member

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    Danny,
    Can you clarify what you mean by clearance? Are you talking about vertical clearance of the shaft/bronze gear or rotating clearance between the bronze gear and the cam. If you're talking vertical, there should'nt be any clearance at all, your bronze gear should be riding on the top of the bushing, that's what helps keep your cam timing more stable. If you've got clearance between the top of the bushing and the bottom of the bronze gear, your hex drive is bottoming out in the oil pump and valve train pressure is pushing the oil pump rotor into the pump end plate. You might want to check the pump for any excessive wear on the end plate. If I'm misunderstanding you I apologize, just wanted to make sure.
     
    #6
    23T Hemmee, Jan 17, 2008
  7. danny

    danny compet elimin

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    gear play

    Hi Ronny yes it's the vertical play i wanted to know;) and we can bring it down to zero no prob we checked the clearance on the oilpump shaft and no prob there
    thanks for the help danny:D
     
    #7
    danny, Jan 21, 2008

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