stripping tub

911tracker85 · 01-16-2017, 01:04 PM

after a lot of work on several other cars, turning my attention back to the 78 SC/930 conversion. I'll be updating my old thread but have a couple specific questions.

I have the tub almost stripped. next step pull the glass so I can finish removing the dash and related stuff. then headliner and sunroof (going sunroof delete), and all the wiring.

as I want to totally strip the tub for full repaint, my questions are:

1. removing the heater cables. it appears I can disc them from the heater flap boxes and just pull them through from the interior/tunnel opening.

2. eBrake cables. if I disc the two cables from the part that connects them together in the tunnel, can the separate cables be pull out the back? or are the fitting too big and have to come off to? or pull them out from the inside/tunnel opening?

also anyone have an estimate of the weight of just the tub? at this point I can easily lift the front off the jack stands, and can also lift the rear but clearly heavier. just curious.

think it is time for the rotisserie. planning to start getting the new parts for suspension, etc. and test fit so I can determine what/if any mods to the tub. and also start planning for the full new wiring harnesses from Timmy2. plan to test fit everything before I have the tub painted.

thanks in advance for any advice, and any other suggestions welcome.

proffighter · proffighter's Garage

Maybe some of your present and future question can be answered by reading my thread here:

Another rust combat

Concerning the e-brake. Just loosen them (the two nuts at the tubes near hubs), unscrew the handle and you can remove each cable from that arm of balance. Then just pull them out of their tunnels

911tracker85 · 01-17-2017, 04:57 AM

thanks. fortunately I have not found one spec of rust on this car.

Rich76_911s · Rich76_911s's Garage

Are you planning on dipping or baking the tub? Just curious why you'd want to remove the heater cables and wiring for a repaint without rust. I'm no expert, but that seems like you're making a lot more work for yourself than you need to. The wiring is a real PIA to get out of the car. I can't imagine getting it back in.

When I removed the heater cables I took them off I did as you suggested. I removed them from the frunk and pulled them out along with the cockpit heater controls. Wasn't too challenging.

Tubs are pretty heavy. My minum guess is that a tub is at least 800Lb, and probably a lot more. I picked an early tub up with maybe 6 guys total. We didn't have to lift it long or high, but it was not easy.

911tracker85 · 01-18-2017, 04:37 AM

I plan to have the tub blasted before primer and paint.

I got the car due to the muffler case splitting and burned some of the engine bay wiring. so that has to be replaced. and since I am removing a lot of stuff, want to simplify the wiring. so planning to replace all with customer harnesses by Timmy2.

I know ... I know.... OCD at its best.

TurboKraft · 01-18-2017, 08:49 AM

Blast the tub -- you're talking about soda blasting, or walnut shell blasting, right?
Highly advise against sand blasting.

911tracker85 · 01-18-2017, 12:38 PM

yep soda

I use both sand/glass bead or walnut shells depending on what I am cleaning.

thanks.

911tracker85 · 01-19-2017, 04:35 AM

BTW, why would sand blasting be bad on a bare tub?

but I do plan to have them use soda. either one will need a lot of air blasting to get all the debris out. before paint.

just curious.

Rich76_911s · Rich76_911s's Garage

Bob,

From what I've read sand blasting is worse than the alternatives because it creates a good bit more heat that can cause warping of panels fairly easily.

I get the OCD part. Enjoy the process.

Cheers
Rich

kevin930t · 01-24-2017, 10:21 PM

Media blasting is fine,red iron oxcide,any blasting the trick is not to stay in one spot for to long time if u do that is when you run into problems with warping,also if you find bondo in any of your pannels dont try to blast it out,use a 1" 36 gritt grinding disc,afterward bodywork that area over.My 2 cents

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Bucketlist · Bucketlist's Garage

What's with this Dustless Blasting that Dennis Gage is always advertising? Anyone tried this?

kevin930t · 01-25-2017, 09:28 AM

I have not used that method,but i do hear good things about it,no matter what method you decide,after its stripped to bare metal,i would run a d.a with 80 gritt over entire car.

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Tyfaim · Tyfaim's Garage

I spent several weeks last winter stripping the tub. Wire wheels where effective.