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Re: 1987 3.2 Carrera Backdate project - Sladeys hotrod

Posted: Tue Apr 22, 2014 9:08 pm
by sladey
OK so that was yesterday....

Today I got down to the sunroof.

Before I started I made a template of the profile of the roof
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Then laid the replacement panel on for size - ok from the front
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But looks a bit long from the side
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Re: 1987 3.2 Carrera Backdate project - Sladeys hotrod

Posted: Tue Apr 22, 2014 9:20 pm
by sladey
Followed the instructions in the Bentley manual to take the sunroof itself out. Then started work on the cassette holding it all in. Chopped the supporting bars at the side, and then put a heat gun on the glue. This is part way through

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It's joined around the top of the opening as well - so I decided to take a grinder with a flap disc round the edge of that to cut it free

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Then starting from the back, applied more heat to the glue and started to loosen it off. The whole cassette is slightly too wide to drop down though so cutting it down the middle allows it to fold in and fall down, and you're left with this
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Then drew round the new panel

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And cut it out
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Tomorrow we weld!!!

Re: 1987 3.2 Carrera Backdate project - Sladeys hotrod

Posted: Tue Apr 22, 2014 9:22 pm
by sladey
hot66 wrote:think you should paint the strengthening gussets a contrasting colour 8)
Hmmm not feeling that

Re: 1987 3.2 Carrera Backdate project - Sladeys hotrod

Posted: Tue Apr 22, 2014 9:34 pm
by Gary71
:shock: Someone has been on the brave pills!

Good luck!

Re: 1987 3.2 Carrera Backdate project - Sladeys hotrod

Posted: Tue Apr 22, 2014 9:37 pm
by hot66
sladey wrote:
hot66 wrote:think you should paint the strengthening gussets a contrasting colour 8)
Hmmm not feeling that
Quite like the idea of bright orange shock gussets in a black engine bay 8) ....

Re: 1987 3.2 Carrera Backdate project - Sladeys hotrod

Posted: Tue Apr 22, 2014 9:58 pm
by jury
sladey wrote: Image

Tomorrow we weld!!!
Yeah Mark ! Go on SON !!!

Re: 1987 3.2 Carrera Backdate project - Sladeys hotrod

Posted: Tue Apr 22, 2014 10:31 pm
by Ian 2.2S
Gary71 wrote::shock: Someone has been on the brave pills!

Good luck!
+1

Re: 1987 3.2 Carrera Backdate project - Sladeys hotrod

Posted: Tue Apr 22, 2014 10:50 pm
by Darren65
sladey wrote:Oh and painted it black which I believe is correct for a 72 car :lol:
....yeh but is that brushed or sprayed! :wink:



Great progress Mark. :)

1987 3.2 Carrera Backdate project - Sladeys hotrod

Posted: Wed Apr 23, 2014 11:25 pm
by sladey
OK, roof weld day has arrived. First we drill ready for the plug welds
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I used the template I'd made, to make another template that could be used from the inside - I kept that jammed up inside until all the welding had been done
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I used some battens to prop the panel up
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And I was then able to fit the cleco fasteners (they are so cool)
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Gradually doing the plug welds, moving about to stop heat build up
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Finally all welded up along with the cleco holes, and ground the welds flat
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By about 3pm I was losing I heart as I was still fannying around getting it positioned correctly, but once I'd got a couple of fasteners in it all speeded up nicely, and the welding didn't take long at all

A satisfying days work

Tomorrow it's Filler Time

Re: 1987 3.2 Carrera Backdate project - Sladeys hotrod

Posted: Thu Apr 24, 2014 6:42 am
by 911hillclimber
Good going!

I have done similar in a larger opening a long time ago and getting started is the hardest bit. Just the fear of acute distortion to overcome!

Will you fully mig weld and lead or plug weld some more and lead the seam?

My 911 is due a back to metal re-paint and I have wondered if I should remove my cloth sun roof and replace with steel.

Re: 1987 3.2 Carrera Backdate project - Sladeys hotrod

Posted: Thu Apr 24, 2014 7:46 am
by sladey
Probably not either - I'm taking Jons lead http://www.classiccarreras.com/964%20Sunroof.html

Looking at his pictures again he's done more spot welds than my plug welds..... I may supplement with some more welds before filler

Re: 1987 3.2 Carrera Backdate project - Sladeys hotrod

Posted: Thu Apr 24, 2014 8:02 am
by DustyM
Mark,

Great stuff, told you the hard bit was removing the old roof, only thing I would do is run a seam weld around each of the corners, but again do it bit by bit to avoid distortion.

Also once all the weld is ground down go around the join with a hammer and dolly and just make sure the edge of the new panel is tight against the roof underneath.

Then it's on to the filler work, you will need a long flexible sanding block (about 12"x2.5") if you don't already have one. Like this http://www.jawel.co.uk/index.php?main_p ... ts_id=2905
Cheers
Jon

1987 3.2 Carrera Backdate project - Sladeys hotrod

Posted: Thu Apr 24, 2014 11:14 am
by sladey
Thanks Jon,

Only just read this so I'm already on the filler! I did another 20 welds along the edges including some extra in the corners - I reckon it'll be fine now - there's about 70-80 welds holding it in

I've already bought a long sander as well - useful things

Thanks for all your help on this and the sills Jon - I'd have struggled without it

Re: 1987 3.2 Carrera Backdate project - Sladeys hotrod

Posted: Thu Apr 24, 2014 11:38 am
by Mike
Well done Mark, really impressed with your new found skills and the epitome of the DDK spirit!

Re: 1987 3.2 Carrera Backdate project - Sladeys hotrod

Posted: Thu Apr 24, 2014 1:39 pm
by sladey
Thanks Mike - very kind