Jump to content


Photo

Replacing Outer Sills - Require Bracing?


  • Please log in to reply
8 replies to this topic

#1 Jimmer 84mayfair

Jimmer 84mayfair

    Passed Test

  • Noobies
  • PipPip
  • 27 posts

Posted 08 January 2017 - 08:13 PM

Hi all,
Some advice...
I have been reading with interest some of your experiences of doing this job, my inner sills are in good condition, the outers need replacing.

I will take some pics going through the process as seems to be the norm.
Regards, Jim
85 Mayfair


Edited by Jimmer 84mayfair, 22 February 2017 - 11:27 AM.


#2 sonikk4

sonikk4

    Twisted Paint Polisher!!!

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

Posted 08 January 2017 - 08:18 PM

Outer sills do not need bracing. Once you look at removing inner and outer with the doorstep removed always brace.

With an inner sill out it sometimes pays to add support over the crossmember to keep that in place without drooping.

#3 Ben_O

Ben_O

    Mill Road Garage

  • Paint Doctor
  • PipPipPipPipPipPipPipPipPipPip
  • 9,781 posts
  • Location: Isle of Wight

Posted 08 January 2017 - 08:18 PM

If just the outers, no bracing is required but i bet the inners will be worse than you expect.

 

But you won't know until you cut them off.

 

Nice simple job though.

 

Good luck

 

Ben



#4 Jimmer 84mayfair

Jimmer 84mayfair

    Passed Test

  • Noobies
  • PipPip
  • 27 posts

Posted 13 January 2017 - 08:54 PM

Thanks chaps, from what I can see the inner sills are ok.
Cheers, Jim


Edited by Jimmer 84mayfair, 22 February 2017 - 11:28 AM.


#5 sonikk4

sonikk4

    Twisted Paint Polisher!!!

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

Posted 13 January 2017 - 09:06 PM

Post up some pictures of the inner sills and we can give you a better idea if they need patching or replacing.



#6 cradley-heathen

cradley-heathen

    Metro-Man

  • Traders
  • PipPipPipPipPipPipPipPipPip
  • 2,481 posts
  • Location: have a guess?
  • Local Club: spearmint rhino

Posted 14 January 2017 - 10:23 PM

if you end up doing the outer sill and the complete inner sill, you may as well do th elot and do the doorstep too.

 

reason being, its quicker in my experience. carefully drilling all the spot welds out (or more than likely) grinding off someone else welds from where its already been patched/replaced, so you can weld onto the fresh flanges of the old doorstep is very time consuming.

 

if you just chop the doorstep off too and drop a new one in first, paying attention to the below the door, then your new inner and outer sills are easier to fit as you have lovely new solid flanges to weld to.



#7 Jimmer 84mayfair

Jimmer 84mayfair

    Passed Test

  • Noobies
  • PipPip
  • 27 posts

Posted 15 January 2017 - 12:21 PM

Cheers for replies.

I have removed the outer sills and cut them just below the sill lip, was thinking of welding the new ones straight onto the bottom of the old lip. The remaining lip is solid, but thought it might make more of a mess removing the remaining spot welded metal than just joining the two together.
Anyone else done this?
The plastic trim will disguise the three lips together and if I seam weld it, it should retain plenty of strength,
...any thoughts?

Regards, Jim

#8 sonikk4

sonikk4

    Twisted Paint Polisher!!!

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

Posted 15 January 2017 - 12:42 PM

Nope, remove the old sill lip completely. You can then see if there is any rust hiding there which there will be. If its light then you can treat it, zinc rich prime it then weld the new sill in place.

 

Leaving a multi layer sandwich could potentially lead to move trouble further down the road.



#9 cityspeed

cityspeed

    Mini Mad

  • Noobies
  • PipPipPipPip
  • 193 posts
  • Location: Essex

Posted 15 January 2017 - 12:45 PM

Probably worth drilling out the spot-welds , at first it may appear solid but due to capillary action water will find its way between the layers, plastic trim encourages this by also trapping water ,I've seen some people tiger seal / seam sealer the edge of the 3 layers before putting trim on to try and stop this.

Edited by cityspeed, 15 January 2017 - 12:47 PM.





1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users