Corvette regulator - fuel filter puch on fittings

Discussion in 'High Tech Retrofits' started by 1934chevycoupe, Aug 11, 2021.

  1. 1934chevycoupe

    1934chevycoupe Veteran Member

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    I couldn't find a thread on this, so, is there a trick to getting the push on EFI fittings to AN onto the corvette regulator / fuel filter? I have Russel 640863 for the return, 640853 for the supply in & 640940 for the supply out. I pushed as hard as i could, and even put a little teflon spray on , and nothing. they can't be that hard.
     
  2. 1934chevycoupe

    1934chevycoupe Veteran Member

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    ok, lubed the inside of the fittings, and they both slid on. now, the male one that goes to the out to fuel rail comes w/ plastic retainers like the female ones already had installed in them. i'm guessing i slide one of those on before i slide it into the body of the regulator-filter?
     
  3. 1934chevycoupe

    1934chevycoupe Veteran Member

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    still not sure about the last male fitting. you'd think w/ the supplied plastic pieces included, one must go in before sliding it on, but it doesn't look like there's room in there for it. anyone have experience w/ one of these fittings? it's the Russel 640940
     
  4. streak

    streak Member

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  5. 1934chevycoupe

    1934chevycoupe Veteran Member

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    ok, i see the difference between what i have and these. doesn't seem like they make one for the 6AN to 3/8 male quick disconnect.

    what problems did you have w/ the ones w/ the plastic insert?
     
  6. 72BIGBLOCK

    72BIGBLOCK Veteran Member

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    Post a picture of what you have so we can see
     
  7. streak

    streak Member

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    Personally I've had inconsistent fitment. Also the plastic is known to be more brittle or go bad over time compared to the type used with factory corvette/GTO/camaro lines. It can lead to it braking and the fitting coming off. Suddenly you have fuel pumping into a hot engine bay or onto a hot exhaust and then there's a fire. It doesn't happen a lot but enough that I will only ever use the type that are mechanically secured and can't back off without wrenching or use factory lines.
     
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  8. 1934chevycoupe

    1934chevycoupe Veteran Member

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    makes sense. i don't see anything on the Russel site for the female end - supply line out to engine. is this earls part what i'd need? https://www.summitracing.com/parts/ear-at991965erl
     
  9. badazz81z28

    badazz81z28 Veteran Member

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    I can’t follow the descriptions here…Russell has all the fittings you need for the vette filter. Anything more force then normal pushing it on, indicates something ain’t right.
     
  10. streak

    streak Member

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