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Thread: worn brass dist gear

  1. #1

    worn brass dist gear

    running a 421 sbc after a year of racing doing some work on it & found the dist gear worn not extremly bad but still makes me worry about it any ideas

  2. #2
    Senior Member RACING JUNKIE
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    They are usually good for about a yr. The biggest cause for wear is the oil pump, high pressures causes more wear. It's not uncommon. You can usually pick that up with a timing light is will show eratic timing when you check the timing. Hope this helps.

    Zip.

  3. #3
    Senior Member RACING JUNKIE
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    Yep common thing with brass gear, as zip said about year of hard running you will see ware,

  4. #4
    Member CRAFTSMAN
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    Any one running the new comp cams composite distributor gear.
    This wouldn't have happened if only you had been paying attention!

  5. #5
    Senior Member MASTER BUILDER
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    Im with Zip we always replaced them every year!

  6. #6
    Senior Member RACING JUNKIE
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    Quote Originally Posted by bluedawg357
    Any one running the new comp cams composite distributor gear.
    I'm running it. The pin hole is only drilled on one side to allow you to finish it with your distributor shaft. Early gears were breaking because of the slight offset in distributor shaft hole.
    I ran bronze gears and changed them at 80-90 runs. Bronze shavings in the oil filter. (See Zips comment above)
    Dave
    http://www.racingjunk.com/profile/343797
    "All that is necessary for the triump of evil is for good men to do nothing" Edmund Burke

  7. #7
    Senior Member MASTER BUILDER
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    Quote Originally Posted by bluedawg357
    Any one running the new comp cams composite distributor gear.
    We have been using them for 2 years, They work great with every camshaft.

    Eliminates the need to replace brass gears every year.
    Competition Engines & Hardcore Engine Parts
    www.cnc-motorsports.com
    info@cnc-motorsports.com

  8. #8
    Senior Member RACING JUNKIE
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    I don't know if all the cam companies are useing them but i've got a Bullit 4/7 swap (big bump) sm/blk cam that has a cast iron distributor gear and rear bearing pinned and bolted to the billet roller. i was told i coud use a steel gear or a Bronze distributor gear on it. I'm asumming they are doing this to save the cam in case someone doesn't use Bronze gear on their race engine.

    Zip.

  9. #9
    I cut an oil feed slot in base of distributor body right above and before where the gears mesh. Bronze gears now last the life of the engine with almost zero wear. I ran one roller cam over 100,000 miles of combined street and strip use.

  10. #10
    Senior Member MASTER BUILDER
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    That sounds like a good tip. Any way you can elaborate on this modification or maybe get a diagram or picture on this forum or at another location?


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