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What is considered clean boot gasket mating surface

Discussion in 'The Garage' started by buztabuzt, Apr 3, 2019.

  1. Not sure how acceptable this level of leftover residue is. Have scraped w plastic and now used acetone and goo gone on it. When I had assembled carbs originally the boots and new gasket were leaking. I have a gasket sealant high temp htv I could also use but thought cleaning surface might have been the cause...
    IMG_20190403_161703.jpg
     
  2. xschris

    xschris a lifestyle not a trend Top Contributor

    Those are not even close to clean. Use a razor to get the large stuff and solvent for whats left.
     
    buztabuzt likes this.
  3. Thanks Chris - I read all the don't use steel / razor on aluminum notes from google... but given how much is left caked on, and how unresponsive it has been to goo gone and plastic scraping... a carefully used razor does seem the only logical way.

    It is strange that while not being clean, the 'dirty' portions are very far away from the intake mouth itself. The mouth is clean, it's the area by the screws that are grimy.

    Just getting started w/ razor but it's making it much easier.
     
  4. sandmanred

    sandmanred XS400 Addict

    I've found brake cleaner to be effective on that kind of residue. Also if you can get a piece of fiberglass with a square edge it can be aggressive enough to remove old gasket but soft enough to not scar the aluminum. If you have to use metal drag it at an angle that won't cut into the aluminum.
     
    buztabuzt likes this.
  5. xschris

    xschris a lifestyle not a trend Top Contributor

    Use grease on the new gaskets. This will help with seal and if you even need to remove them much easier.
     
    buztabuzt likes this.
  6. Boot side, engine side, or both?
     
  7. xschris

    xschris a lifestyle not a trend Top Contributor

    Both. Don't over torque the allen bolts that holds them as this could cause issues also. I think it's around 15-20lbs.
     
    buztabuzt likes this.
  8. SoulMan

    SoulMan XS400 Addict

    What kind of grease xschris?
     
  9. xschris

    xschris a lifestyle not a trend Top Contributor

    I use lucas red grease but any would do.
     
  10. SoulMan

    SoulMan XS400 Addict

    I have some wheel bearing grease sitting around. Do you think that would work?
     
  11. xschris

    xschris a lifestyle not a trend Top Contributor

    As long as it's just grease and clean.
     

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