how to change base gaskets

Discussion in 'Engine, Fuel and Exhaust' started by mxrider101, Dec 19, 2010.

  1. mxrider101

    mxrider101 Member

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    I have never torn apart a Harley motor, but many cars and other bikes. My 94 evo needs base gaskets. I will get the Harley shop manual, and have heard a motion pro allen wrench will help. (any part numbers?) what all should I know and how hard is this job? I have yet to find a step by step forum!! thanks for any help!
     
  2. Jack Klarich

    Jack Klarich Expert Member Contributor

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    Motion Pro - Rocker Box Wrench 3/16 Har Dav here is the link to the tool, cover the lower end so gasket material does not get in, do an oil change when done. I like to use Permatex gasket remover, it makes the gaskets a lot easier to scrape, easy does it so you dont gouge the base
     
  3. maine-e-axe

    maine-e-axe Junior Member

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    I cut an old allen wrench down to get between the rockerbox and the frame. Mark the push rods for where they come from as they are all different legths.:s
     
  4. Hoople

    Hoople Account Removed

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    Jack,
    Does that Permatex gasket remover really work? I always wanted to buy a can of it to try out but never have. Does the smell of the spray smell like carb cleaner or anything common to what you would find in a repair shop.
     
  5. Jack Klarich

    Jack Klarich Expert Member Contributor

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    Yep, Hoople, it does work quite well, dont get it on your hands it burns, kind of a smell between carb cleaner and acetone, it comes in spray can and one with a brush applicator, you may need to spray it on a couple of times when it starts to bubble its time to scrape, Jack:s
     
  6. fin_676

    fin_676 Well-Known Member Staff Member Moderator Contributor

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    Once you get the service manual you will be able to read through the various pages to work out what you need to do there is nothing complex to replacing the base gaskets
    you will need a torque wrench for reassembly just read the manual and take your time
    the only difficult part is getting the old gasket off it can take a wee while to coax it away without damaging the the area so just take care

    Brian
     
  7. Jack Klarich

    Jack Klarich Expert Member Contributor

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  8. Hoople

    Hoople Account Removed

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    Sounds cool,,I have to give it a try. I did not realize it will bubble. It's probably oven cleaner!:D
     
  9. Jack Klarich

    Jack Klarich Expert Member Contributor

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    You may be right cause of the burning feal, I used soft metal base gaskets and head gaskets on the Evo builds and had no more problems with leaks. a bit tricky, you have to check them close for nicks and burrs, dress them with spray coppercoat and no more problems
     
  10. geezer

    geezer Senior Member Contributor

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    Thanks for the tip Jack. Looks like it makes cleaning quick. Gonna get some.