Jump to content


Photo

Preparing Inner Face Of Outer Sills


  • Please log in to reply
8 replies to this topic

#1 MikeRotherham

MikeRotherham

    One Carb Or Two?

  • TMF+ Member
  • PipPipPipPipPipPipPip
  • 939 posts
  • Location: Westwoodside North Lincs

Posted 28 July 2017 - 10:05 AM

I would like to paint the inner face of my outer sills prior to them being fitted.

 

They are Heritage sills and there are no spider tracks or rust present.

 

Presumably, I can just rough up the e coating with something like a scotchbrite pad.

 

Do I then spray the entire inner sill with weld thru primer or just the edges that will be welded then the rest of the inner sill with ordinary primer then apply top coat?

 

I've seen Sonikk4's thread about installing inner and outer sills and saw that he'd drilled the holes for plug welding first then painted.

 

How about drilling holes on the outer sill, before fitting, for future cavity wax injection. I know there are the 2 square holes on the inner sill but also adding holes adjacent to possible rust spots like the internal slinging brackets a either end and the jacking point in the middle then capping them off with plastic bungs?

 

Any other tips?

 

Regards

 

Mike.


Edited by MikeRotherham, 28 July 2017 - 10:20 AM.


#2 sonikk4

sonikk4

    Twisted Paint Polisher!!!

  • Admin
  • PipPipPipPipPipPipPipPipPipPipPip
  • 15,884 posts
  • Name: Neil
  • Location: Oxfordshire

Posted 28 July 2017 - 11:26 AM

No need to drill extra holes for adding cavity wax. Use the flutes.

After keying, spray epoxy primer on all the areas that dont it get welded. The areas that do use weld through primer. I then top coat all of the other areas right up to where I weld. That's it. Then once all of the welding is done, knocking back the welds etc then I seam seal the a smear of sealant on the door step to sill flange then i force paint into flutes and once dried and all other work done cavity wax.

#3 neal

neal

    Speeding Along Now

  • Members
  • PipPipPipPipPip
  • 318 posts
  • Location: Leicestershire

Posted 28 July 2017 - 12:25 PM

No need to drill extra holes for adding cavity wax. Use the flutes.

After keying, spray epoxy primer on all the areas that dont it get welded. The areas that do use weld through primer. I then top coat all of the other areas right up to where I weld. That's it. Then once all of the welding is done, knocking back the welds etc then I seam seal the a smear of sealant on the door step to sill flange then i force paint into flutes and once dried and all other work done cavity wax.

I did this as well, but I also used some POR15 and used a small syringe and fed the paint into the seams (on the outside of the seam of course) after welding, capillary action takes place and the paint is sucked into the seam edges and around the welds then gently dress the seams (when the paint is still wet) flat either by using a panel hammer & dolly or I like to use a couple of thick rectangular metal plates in a pair of vice grips to evenly flatten the seams, better still a pair of wide jaw panel grips will do the job.

 

Then as Sonik said use a small amount of seam sealer/Tiger seal on the outer edge to stop the moisture getting in.

I bought the waxoil kit which consisted of a hand pump screwed onto a metal tin with handle with a control trigger and a small flexible wand to get into the flutes.

For the rear of the inner cavity of the sill, I removed one of the rear subframe to heel board bolts and sprayed inside there as well.

 

http://www.halfords....ressure-sprayer

 

To keep the waxoil nice and runny I put it in a hot bucket of water, if the flexible tube provided in the kit is not long enough then buy some more via somewhere like EBay.


Edited by neal, 28 July 2017 - 12:34 PM.


#4 SolarB

SolarB

    One Carb Or Two?

  • Members
  • PipPipPipPipPipPipPip
  • 1,383 posts
  • Location: Surrey

Posted 28 July 2017 - 02:37 PM

Dinitrol ML is one of the best anti-rust cavity protection treatments to use in places like the sills after welding. Waxoil was OK when it was launched years ago but there are better products available now.



#5 neal

neal

    Speeding Along Now

  • Members
  • PipPipPipPipPip
  • 318 posts
  • Location: Leicestershire

Posted 28 July 2017 - 02:54 PM

Dinitrol ML is one of the best anti-rust cavity protection treatments to use in places like the sills after welding. Waxoil was OK when it was launched years ago but there are better products available now.

I use Valvoline Tectyl 506 as it's easier to use and spray in the cavities and not thick like waxoil, but hey each to their own preference.



#6 sonikk4

sonikk4

    Twisted Paint Polisher!!!

  • Admin
  • PipPipPipPipPipPipPipPipPipPipPip
  • 15,884 posts
  • Name: Neil
  • Location: Oxfordshire

Posted 28 July 2017 - 04:05 PM

I cant find it which annoying but there a review done by a magazine in the past year and guess what for all the nay sayers, Waxoyl performed as well as the rest.

 

I will be using Dinitrol as this is the product we use on Civil Aircraft. If it can withstand -50c and +50c then its good for my car.



#7 neal

neal

    Speeding Along Now

  • Members
  • PipPipPipPipPip
  • 318 posts
  • Location: Leicestershire

Posted 28 July 2017 - 04:10 PM

Anything is better than nothing, well worth checking and doing it every year if it needs it.



#8 MikeRotherham

MikeRotherham

    One Carb Or Two?

  • TMF+ Member
  • PipPipPipPipPipPipPip
  • 939 posts
  • Location: Westwoodside North Lincs

Posted 03 August 2017 - 07:22 AM

Thanks for all your input, lots of food for thought there.

 

I had all the box sections etc, injected with Dinitrol a couple of years ago when I first bought the car as a bit of a stop gap because I assumed there would have already been rust present and it would help slow it down and prevent further rust taking hold so will use Dinitrol again.,



#9 pete l

pete l

    One Carb Or Two?

  • Members
  • PipPipPipPipPipPipPip
  • 1,355 posts
  • Location: East of France

Posted 08 August 2017 - 12:56 PM

I cant find it which annoying but there a review done by a magazine in the past year and guess what for all the nay sayers, Waxoyl performed as well as the rest.

 

I will be using Dinitrol as this is the product we use on Civil Aircraft. If it can withstand -50c and +50c then its good for my car.

 

http://www.auson.se/...onthly_uk_0.pdf






1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users