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Thread: need suggestions how to repair crack in oil pump housing 34 chief

  1. #11

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    Quote Originally Posted by T. Cotten View Post
    Low-temp silver solder and a Henrob torch, Christopher!

    Carl Olsen turned me on to www.riogrande.com, and 56% Ag wire solder #101705

    With proper preparation and technique, it will wick into the crack.

    Looks like it froze to me!

    ....Cotten
    Soldering requires absolute cleanliness. How do you go about cleaning the damaged area to ensure penetration of the molten solder?

  2. #12
    Join Date
    Jun 2001
    Location
    Central Illinois, USA
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    4,272

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    Quote Originally Posted by Kozy View Post
    Soldering requires absolute cleanliness. How do you go about cleaning the damaged area to ensure penetration of the molten solder?
    Painstakingly, Kozy!

    I usually start with ALOX blasting (not beads), and then try to feed it an acid etch. 'Ruby Fluid' is a mild one.
    Then maybe another blast, and 'Brakleen' if it doesn't smell right.

    Fluxing (and 'masking' with Amway "Oven 'N' Grill" coating) must be just as attentive; I think my dried up borax is "Stay-Silv", slurried with rubbing alcohol and allowed to dry for inspection.
    (Electroless nickel is the most fantastic flux for silver-solder! It can be a pain.)

    Proper heat is always a trial.

    Face it, we really might not want it all the way into the bore.
    We just want it hygienic.

    ...Cotten
    Last edited by T. Cotten; 03-05-2019 at 11:26 AM.
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

  3. #13

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    Quote Originally Posted by T. Cotten View Post
    Painstakingly, Kozy!

    I usually start with ALOX blasting (not beads), and then try to feed it an acid etch. Ruby Fluid is a mild one.
    Then maybe another blast,if it doesn't smell right.

    Fluxing (and 'masking' with Amway "Oven 'N' Grill" coating) must be just as attentive; I think my dried up borax is "Stay-Silv", slurried with rubbing alcohol and allowed to dry for inspection.
    (Electroless nickel is the most fantastic flux for silver-solder! It can be a pain.)

    Proper heat is always a trial.

    Face it, we really might not want it all the way into the bore.
    We just want it hygienic.

    ...Cotten
    Thanks for the info, I have experience with both Ruby and Stay Silv. I should have thought "tinning fluid".

  4. #14
    Join Date
    Oct 2002
    Location
    129 greenwood circle milford pa 18337
    Posts
    252

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    any thoughts on j b weld?

  5. #15
    Join Date
    Jun 2001
    Location
    Central Illinois, USA
    Posts
    4,272

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    Quote Originally Posted by cscott View Post
    any thoughts on j b weld?
    My "nickel" coating looks great on it, Christopher!

    ....Cotten
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

  6. #16
    Join Date
    Oct 2002
    Location
    129 greenwood circle milford pa 18337
    Posts
    252

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    I understand that , but this wont show at all facing in towards cam cover,how do you feel about the product in general?

  7. #17
    Join Date
    Jun 2001
    Location
    Central Illinois, USA
    Posts
    4,272

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    Quote Originally Posted by cscott View Post
    I understand that , but this wont show at all facing in towards cam cover,how do you feel about the product in general?
    I love it Christopher!

    (But a professional shouldn't admit to using it.)

    JBWeld held up great in my P4gas immersion tests, until recent years. Then cure time became critical. Something changed.

    Hot oil is a different environment; I always wondered why gas tank sealers prescribe against use in an oil tank.

    ....Cotten
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

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