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Re: Dolomite Nismo
Posted: Mon Jun 22, 2020 6:43 pm
by James467
On to the boot floor, using..... yep you guessed it the club repair panels!
I have removed all of the underseal and drilled out the spot welds, I wont use the whole panel, just the bits I need.
The wheelarch and rear wing have gone as well so I'll remove everything and work from the inside out to repair.
I just cut off what I needed and offered it up ready to weld into place.
Then seam welded along the join. Once ground back you wont see this.

Re: Dolomite Nismo
Posted: Mon Jun 22, 2020 7:48 pm
by new to this
James467 wrote: ↑Mon Jun 22, 2020 6:38 pm
Matt Cotton wrote:
Great stuff James.. that new toy of yours is really helping you here.
Do you use 0.6 or 0.8mm welding wire out of interest?
Kind Regards
MC
0.8mm Matt, 0.6 just isnt worth bothering with!
new to this wrote:
James
nice work be ,interested in how you repair the rear arches mines gone it the same places also boot floor as well gone
when you fit the club sills cant see from your pictures , do you cut the bottom edge where it folds back on its self
Dave
Which edge is that Dave? At the top? No, I have used a bead roller to create an edge, lap jointed it to the top then ground back the welds to create an invisible seam.
James
the bottom edge of the outter sill folds back over its self and covers the inner sill thats the bit , do you cut that returned edge
Dave
Re: Dolomite Nismo
Posted: Tue Jun 23, 2020 1:42 am
by Carledo
new to this wrote: ↑Mon Jun 22, 2020 7:48 pm
the bottom edge of the outter sill folds back over its self and covers the inner sill thats the bit , do you cut that returned edge
Dave[/color]
I don't know about James, but I cut it off because a) it's not original and b) it's a rust trap if it's folded up, there are SUPPOSED to be drains in the sill, I always make sure to make some. That's not possible if the lip is folded over.
Steve
Re: Dolomite Nismo
Posted: Wed Jun 24, 2020 8:02 pm
by new to this
Carledo wrote: ↑Tue Jun 23, 2020 1:42 am
new to this wrote: ↑Mon Jun 22, 2020 7:48 pm
the bottom edge of the outter sill folds back over its self and covers the inner sill thats the bit , do you cut that returned edge
Dave[/color]
I don't know about James, but I cut it off because a) it's not original and b) it's a rust trap if it's folded up, there are SUPPOSED to be drains in the sill, I always make sure to make some. That's not possible if the lip is folded over.
Steve
Steve
Thanks , didnt know the sill was meant to have drain holes
Dave
Re: Dolomite Nismo
Posted: Wed Jun 24, 2020 8:24 pm
by Carledo
new to this wrote: ↑Wed Jun 24, 2020 8:02 pm
Carledo wrote: ↑Tue Jun 23, 2020 1:42 am
new to this wrote: ↑Mon Jun 22, 2020 7:48 pm
the bottom edge of the outter sill folds back over its self and covers the inner sill thats the bit , do you cut that returned edge
Dave[/color]
I don't know about James, but I cut it off because a) it's not original and b) it's a rust trap if it's folded up, there are SUPPOSED to be drains in the sill, I always make sure to make some. That's not possible if the lip is folded over.
Steve
Steve
Thanks , didnt know the sill was meant to have drain holes
Dave
If you look at a rare original, you will see there are drains formed in the inner sill, at least 3 of them, maybe more.
This often disappears, along with the lower sill edge when the tinworms bite and the club undersill panel, lovely as it is, doesnt include them. So I make them in the outer sill at the clamping on stage (front, center and rear) by clamping a large screwdriver blade between the outer and inner sill with a panel clamp. Works for me, the drains are regular in shape (so don't look out of place) and slightly larger and more efficient than the originals. Lets out accumulated water AND excess waxoil/whatever you use, so the sills don't disintegrate from tinworm 2 years later!
Steve
Re: Dolomite Nismo
Posted: Wed Jun 24, 2020 8:41 pm
by Carledo
Here's a pic of my own unwelded original sill.
Looks like 2 holes together, but it's an inch long slot, half gummed up with Ziebart.
Not easy to see from this angle but there is also a deliberate "low spot" in the outer sill coinciding with the drain, so it gets the last drop of water out (in theory at least!) There are indeed 3 of these each side.
Steve
Re: Dolomite Nismo
Posted: Wed Jun 24, 2020 9:25 pm
by new to this
Carledo wrote: ↑Wed Jun 24, 2020 8:24 pm
new to this wrote: ↑Wed Jun 24, 2020 8:02 pm
Carledo wrote: ↑Tue Jun 23, 2020 1:42 am
I don't know about James, but I cut it off because a) it's not original and b) it's a rust trap if it's folded up, there are SUPPOSED to be drains in the sill, I always make sure to make some. That's not possible if the lip is folded over.
Steve
Steve
Thanks , didnt know the sill was meant to have drain holes
Dave
If you look at a rare original, you will see there are drains formed in the inner sill, at least 3 of them, maybe more.
This often disappears, along with the lower sill edge when the tinworms bite and the club undersill panel, lovely as it is, doesnt include them. So I make them in the outer sill at the clamping on stage (front, center and rear) by clamping a large screwdriver blade between the outer and inner sill with a panel clamp. Works for me, the drains are regular in shape (so don't look out of place) and slightly larger and more efficient than the originals. Lets out accumulated water AND excess waxoil/whatever you use, so the sills don't disintegrate from tinworm 2 years later!
Steve
Steve
Ill have go at some drain holes ,im going to fit the Stag stainless cill trims to my dolomite , i found out today which did surprised me from bumper to bumper the Stag is longer ,but from cill end to cill end the dolomite is longer meaning the Stag cill trims are about 2 -3 inches short
Dave
Re: Dolomite Nismo
Posted: Wed Jul 01, 2020 10:06 am
by Albuzz
Absolutely brilliant set of photos to help a complete novice like me before setting about repairing/replacing sills...
I have read somewhere that the club outer sills are straight, whereas the originals have a slight curve... is that right and if so, how did you allow for that?
I know that it’s necessary to brace the shell before cutting out the old sill... do I need to do that before cutting out the outer sill (so I can see what I need to replace?
Can I also ask where.s the best place to fix the brace (welded?).
Brilliant post... thanks
Akan
Re: Dolomite Nismo
Posted: Wed Jul 01, 2020 11:32 am
by James467
Thanks!
Yes the orginal steel pressings have a curved profile on the top lip of the sill, I cut slots in this to allow it to curve and match the profile of the original.
If you are just replacing the outer skin, reinforcer and lower inner section it isnt really necessary to brace the shell. Axle stands under the subframe and rear axle and just dont move the car! I braced the door gap on Richards just where I cut off the top of the sill section to gain access to the reinforcer. I was worried about the inner section folding in on itself where I had cut the lower section away. I would brace the doors as well as at the base of the B post to B post across each other and bottom of b post to top of opposite B post creating an X if I have to cut a lot of the floor or inner sill out, but I haven't had one that bad yet! Although, I know Alun has one lined up for me!
Sorry Steve and Dave, I didnt reply!
I dont cut off the lip, I bend it down slightly to create a sort of drip rail plus I use it to line up the sill! My concern with cutting off the lip is that water will travel up into the seam through capillary action, which is probably the cause of rust here anyway! Plus its stronger with that lip. I do put three drain holes in, but drill a hole in the corner of the inner sill then bang the lip over t make it look like the original, you just cant see them well with the lip on! The seam does get a thin bead of seam sealer and as we all know, the sills should still be protected internally with a good cavity wax.

Re: Dolomite Nismo
Posted: Wed Jul 01, 2020 10:58 pm
by Albuzz
Thanks for the quick reply... Much appreciated.
Alan
Re: Dolomite Nismo
Posted: Sat Jul 04, 2020 6:43 pm
by James467
Re: Dolomite Nismo
Posted: Sat Jul 04, 2020 6:59 pm
by Tony Burd
What did you use to strip the underseal?
Re: Dolomite Nismo
Posted: Sat Jul 04, 2020 7:09 pm
by James467
Re: Dolomite Nismo
Posted: Sat Jul 04, 2020 7:14 pm
by James467
Tony Burd wrote: ↑Sat Jul 04, 2020 6:59 pm
What did you use to strip the underseal?
Old Petrol, a gasket scraper then white spirit with lots of rags!!
Never again am I doing that job!!!
For your own sanity get it shot blasted!
Re: Dolomite Nismo
Posted: Sat Jul 04, 2020 7:23 pm
by Tony Burd
Funny you say that I have been looking into getting the shell blasted. There is a company near me that uses plastic media, need to give them a call to find out the cost.