Under sealing?

Discussion in 'Mech Tech' started by Twe-d, Oct 10, 2013.

  1. Just curious what way you guys went about sealing the axle of your bus

    Ive scraped off all the old waxol, buffed it down to bare metal/factory primer then painted it with zinc primer but what next? I bought a tin of underbody sealant from Halfrauds so just start painting that on or should i put a coat of say hammerite on first?

    thanks
    tweed
     
  2. Poptop2

    Poptop2 Administrator

    The underseal should be ok now.
     
    Last edited: Oct 10, 2013
  3. Epoxy mastic that's what I went for :D
    [​IMG]
     
  4. It should be etch prime then paint over bare steel
     
  5. 2k, powder coat or jotamastic seem to be the favorites for chassis and suspension parts in the Mk1 golf world and theyre almost as bad rot-wise as a bay so i imagine any of those would work well :)
     
  6. assuming you've repainted it, then underseal will be OK.
    wipe the grease nipples with a bit of petrol on a rag afterwards
     
  7. id either 2 pack paint it or paint it in por15. Dont underseal it over primer! primer goes on before topcoat. Hammerite is for painting railings and gates not cars
     
    fritt likes this.
  8. Hammerite won't protect it.

    Do what he says ^
    :)
     
  9. Just to clarify all the suspension parts i.e. beam, trailing arm i plan to have shot blasted and powder coated once removed, just concentrating on the axel, top hats and other bits i'd ideally like to hand paint.

    I'll look into getting one of the paints mentioned and leave the under seal to last

    thanks
     
  10. Hammerite is fine as long as you prep the beam properly. I know it's not very fashionable at the moment, but I painted the underside of my van in hammerite nearly 10 years ago and it's still good now.
     
  11. id por15 it for easiest then underseal it. id also por15 beam and suspension bits, i wouldnt blast beam or you will never get grit out bearings :(
     
    Twe-d likes this.
  12. After scraping all the old white off..
    I used fe123 rust treatment
    Zinc primed
    Stone chipped
    Then I plan to brush on waxoyl or something similar.
     
    Twe-d likes this.
  13. image.jpg
    It's Bonda primer, if that makes a difference. Applied very well and the finish after one coat is good.

    Notice the missing jacking points and top hats due to the lack of a decent second hand welder in my area but I WILL have one next week, which leads me on to my next maybe stupid question.... Should I paint the Insides of the new jacking points?

    Thanks
     
  14. Going by the amount of rot inside mine I'm gonna go with yes lol
     
    Twe-d likes this.
  15. Hammerite was a different product back then though. It's now "new and improved" and lacking its formerly durable properties.
     

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