Flamethrower Dist and Roller Cam?

Discussion in 'Technical' started by Jsarnold, Oct 13, 2010.

  1. Jsarnold

    Jsarnold Senior Member

    Joined:
    Oct 29, 2008
    Messages:
    2,846
    Likes Received:
    1
    Trophy Points:
    100
    Location:
    Raleigh, North Carolina
    Vehicle:
    '72 Sprint
    The Pertronix catalog lists the FlameThrower distributor for sbf, EXCEPT 5.0. No listing for a 5.0.

    When I asked about a steel gear for a roller cam, I got this response.



    I guess I believe them. :hmmm: Anyone using one of those distributors with a roller tappet cam?

     
    Last edited: Oct 15, 2010
  2. maverick75

    maverick75 Gotta Love Mavs!

    Joined:
    Mar 31, 2005
    Messages:
    9,023
    Likes Received:
    2
    Trophy Points:
    157
    Location:
    Riverside, California
    Vehicle:
    The mav is gone but i'm still here!
    as long as its a steel/bronze/composite i dont see any problems with running it in a roller motor. But of course cast iron is a no no.
     
  3. PaulS

    PaulS Member extrordiare

    Joined:
    May 3, 2004
    Messages:
    4,858
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Seattle area
    Vehicle:
    1966 Mustang, 1972, 73, 73 and 73 Mavericks
    Actually a cast iron gear would be fine - BUT the sintered iron gears will shread against the steel cam. (sintered iron is powdered iron formed under pressure)
     
  4. maverick75

    maverick75 Gotta Love Mavs!

    Joined:
    Mar 31, 2005
    Messages:
    9,023
    Likes Received:
    2
    Trophy Points:
    157
    Location:
    Riverside, California
    Vehicle:
    The mav is gone but i'm still here!
    I also thought they were cast.... It even states it in the description when you buy a distributor. So there sintered iron?
     
  5. PaulS

    PaulS Member extrordiare

    Joined:
    May 3, 2004
    Messages:
    4,858
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Seattle area
    Vehicle:
    1966 Mustang, 1972, 73, 73 and 73 Mavericks
    Yep! they are sintered iron - just crack one and you can tell.
     
  6. maverick75

    maverick75 Gotta Love Mavs!

    Joined:
    Mar 31, 2005
    Messages:
    9,023
    Likes Received:
    2
    Trophy Points:
    157
    Location:
    Riverside, California
    Vehicle:
    The mav is gone but i'm still here!
    Thank you for the info Paul.
     
  7. Jsarnold

    Jsarnold Senior Member

    Joined:
    Oct 29, 2008
    Messages:
    2,846
    Likes Received:
    1
    Trophy Points:
    100
    Location:
    Raleigh, North Carolina
    Vehicle:
    '72 Sprint
    So Many Options ...

    OK, so I was settled on a Duraspark/HEI hybrid as my second ignition for the Maverick. (I want an extra ignition in the trunk for road trips.) Lining up the parts, I find a rebuilt '85 GT 5-speed Duraspark for $50. HEI module is $22. Then, with more reading, I learn I should also get a better coil to get the advantage of the hotter ignition.

    So, why not just buy a second HEI distributor and have the same wiring for the primary and backup ignitions. How about this one for $40? http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=330492518453&fromMakeTrack=true

    Sure would make it simpler to swap out in case of a failure and I'm not bothered by the size of the HEI.

    I asked the seller which gear it has. If its bronze or steel, I think I'll go for it.
     
  8. Bryant

    Bryant forgot more than learned

    Joined:
    Aug 7, 2007
    Messages:
    6,475
    Likes Received:
    101
    Trophy Points:
    161
    Location:
    San Diego
    Vehicle:
    72 grabber
    those distrbtors use gm hei moduels. you shouldnt need to carry a complete distributor, just the moduel. unless your worried about the gear wearing out. it shouldnt if its the right one for the cam.
     
  9. Jsarnold

    Jsarnold Senior Member

    Joined:
    Oct 29, 2008
    Messages:
    2,846
    Likes Received:
    1
    Trophy Points:
    100
    Location:
    Raleigh, North Carolina
    Vehicle:
    '72 Sprint
    Not worried about the gear but I like the idea of swapping out the entire ignition (module, coil, cap, rotor, ...) if I have a problem on the road. Then I can find the problem and fix it when I get home. I do appreciate your comments. :Handshake
     
  10. mojo

    mojo "Everett"- Senior Citizen Supporting Member

    Joined:
    Jul 20, 2009
    Messages:
    3,306
    Likes Received:
    59
    Trophy Points:
    173
    Location:
    Chicago
    Vehicle:
    73 Comet GT-302 4bl
    HEI Dizzy Upgrade

    I chked out that HEI setup. I like what I see. At that price u can afford 2 new units. I have the DuraSpark on my car but considering the change over. I wud like the setup where I get 12v to coil setup and eliminate the box under the hood. If you go this route I wud like to know what u think of this upgrade.
    I have seen others here using similiar if not the same setup and kind of confused abt the dizzy gear issues. Im not clear on what gear I wud need in order not to do any damage internally. I suppose all the DuraSpark dizzy's have the same gear material. Maybe some of the folks here can provide me some feedback on this question?
     

Share This Page