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Thread: baby bosch point gap

  1. #1
    Join Date
    Oct 2002
    Location
    129 greenwood circle milford pa 18337
    Posts
    260

    Default baby bosch point gap

    have a 34 chief with a baby bosch ffvrs mag getting different info on point gap, does someone know the correct gap for this mag? thanks chris

  2. #2
    Join Date
    Jun 2007
    Location
    Catonsville,Md.
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    189

    Default

    The '34 riders handbook in the AMCA library says .020".

  3. #3
    Join Date
    Oct 2011
    Posts
    527

    Default

    HEy Chris,As tomfill said my 34 riders says .020 but doesnt mention brand .
    The 34 price lists shows Splitdorff and Bosch available mag options for chief so probably same gap.
    Is your bike a policemodel?I have the same bike and mag and have only seen another ffvrs(with 53 in a circle" on harley track models.
    Tom

  4. #4
    Join Date
    Apr 2010
    Location
    Austria
    Posts
    206

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    FFVRS 53 is Indian 2 cylinder and FFVRS 56 is Harley according to an original Bosch catalogue I have. Please see attached page. I will also look for point gap sugestion, but asume it is the same as on other magnetos, so the 0.020 sound OK. The contacts of the spark plug need be be closer than on a battery ignition bike with around 0.016" (0.4mm)
    Attached Images Attached Images
    Last edited by gsottl; 03-25-2020 at 02:50 PM.

  5. #5
    Join Date
    Oct 2011
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    527

    Default

    Thanks for posting that.These mags are amazing when you remove the cap and see no wires to points that spin.I think they are pretty rare.
    Tom

  6. #6
    Join Date
    Oct 2002
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    129 greenwood circle milford pa 18337
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    Default

    no its not a police model but it is a 53 in the circle, it did not come with the bike I got it from Kent Thompson because there wasn't one there. chris

  7. #7
    Join Date
    Oct 2002
    Location
    129 greenwood circle milford pa 18337
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    Default

    thanks for the info, I did not know about the spark plug gap, chris

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