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What's the 1st year for the Galvanized body 911/930??

Just curious about when the 1st year of the galvanized Porsche 911/930 body was? Was is 1976?? 77? 78?

thanks in advance.
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Old 06-18-2002, 11:00 AM
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1976 for the 911. How do I know? I bought a 75 from the midwest that made me wish it had the galvenizing. I know I'll never make that mistake again.

Cheers,

Joe

Last edited by stlrj; 06-18-2002 at 11:12 AM..
Old 06-18-2002, 11:08 AM
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1976!!
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Old 06-18-2002, 11:10 AM
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Galvanizing was phased in with 911's. It actually starter earlier than 1976 but was only used on certain panels. '76 was the first year for a completely treated car.
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Old 06-18-2002, 11:44 AM
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I have a 1975 Turbo and I have not found any galvanized panels but sure have located lots of rust. Unless vehicle has been in sunny climes or well taken care of, suspect rust and sometimes major.
Old 06-18-2002, 01:20 PM
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Cool

This is actually sort of a trick question.

It depended upon the year and body style. Coupe/Targa.

There is a diagram in the factory repair manual that outlines the years and parts of the car involved.

Safe to say parts of the '76 and all of the '77.

Good luck,
David Duffield
Old 06-18-2002, 02:31 PM
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what years

Also for example one 1976 912e is not coated but, some of them are.
Old 06-18-2002, 05:56 PM
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Porsche started experimenting with rust-proofing in 1967 when they produced 3 911's made of polished, unpainted stainless steel. They were driven for thousands of miles, one still remains.
Obviously, the costs were prohibitive.
Porsche started galvanizing the wheel arches and pans on the D-series cars in the summer of 1970. It added 70DM to the cost of each car.
In 1976 Porsche started galvanizing the entire car for the I series cars. The only part that was not treated was the coupe roof. The treatment was actually a Zinc coating applied in a 500C immersion bath. Porsche began offering the 6 year warranty against rust at this point. They had to use different welding procedures and protect workers against the nasty vapors which the zinc can give off.
I don't know why I can remember this stuff but forget my wife's birthday.
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Old 06-18-2002, 06:58 PM
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oh oh......I'm hearing mixed messages here.

I'm about to purchase a beautiful 1976 Porsche 930 (Carrera Turbo coupe with steel flares) and was curious if it had a galvanized body.
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Porsche 930 (for sale)
Mitsu 3000GT VR4 (for sale)
Buick GN (for sale)
(all 3 heavily modded)
Yamaha YZF-R6 (one day I may install a turbo on the R6 or upgrade to an R1 or Hayabusa and turbo it!) Sold!
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get the feeling I like "turbodriven" vehicles??
Old 06-18-2002, 07:23 PM
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If the car is a '76 911Turbo and there is no rust now, buy the car, you'll be fine. If it's got steel flares welded on and you don't now who did the welding, you can't be sure if the metal was treated properly before and after welding to insure that it won't rust.
Good body shops know how to treat bare metal so that the potential for rust is minimized.
Even a galvanized car which has bee stripped to bare metal and not properly treated will rust. The zinc coating was 40 microns on the heaviest rust areas and 20 microns on less rust-prone spots so it's possible to go right through that when stripping a car for repaint.
IMHO, if you like the car and have inspected it carefully for rust with good results, buy it and keep it protected.
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Old 06-18-2002, 07:41 PM
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Quote:
Originally Posted by GIBSON View Post
Porsche started experimenting with rust-proofing in 1967 when they produced 3 911's made of polished, unpainted stainless steel. They were driven for thousands of miles, one still remains.
.
I just came across this in Paul Frere's 911 storybook. Does anyone know the current resting place of this SS 911 , and are there any pix?

My ultimate 911 to suit my circumstance is a SS longhood in rally spec with some outlaw touches. Somehow I think that will remain in fantasyland
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Old 08-18-2011, 02:53 AM
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My '76 was built in December of 1975 and it appears to be fully galvanized.

One data point...
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Old 08-18-2011, 03:21 AM
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Galvanized steel was used for floor and inner panels from MY'71

outer panels of Thyssen steel were used from My'76, early '76 coupes were all Thyssen steel except for the roof but by the end of production the roofs were also Thyssen

Thyssen steel is double galvanized steel which is appropriate for outer finished body panels as opposed to simple cold galvanizing used on the inner panels.

the zinc in the galvanized panels added ~10kg to the cars weight

the '76 cars has a 6yr rust warranty which was raised to7yrs in '81 and again to 10yrs in'86

The famous picture of the 3 unpainted cars was 3 My '76 galvanized/Thyssen steel cars but there were also 3 experimental fully galvanized cars built in '67, the outer panels were polished but not painted or sealed in any other way.

from '72 ss steel was used for exhaust/heat exchangers and oil tank
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Old 08-18-2011, 04:34 AM
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My '87 has rust popping up at the drain holes behind the rear glass.

So much for galvanizing.....
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Old 08-18-2011, 07:08 AM
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Quote:
Originally Posted by IROC View Post
My '76 was built in December of 1975 and it appears to be fully galvanized.

One data point...
Yup...

The '76 model year started in September, '75. September thru August is the MY.
Old 08-18-2011, 08:23 AM
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They started galvanizing the floorpan panels only for the 1974 model year, then starting with the 1976 models the whole chassis was dipped and galvanized.

Some welder fabricators hate welding galvanized steel because it spits while welding it.
Old 08-18-2011, 09:11 AM
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All the early turbos have welded flares, the factory didnt start stamping the quarters and fenders with the turbo flares until the early 80s.
I remember the 76 cars with the paint coming off the galvanization in sheets...
Bruce
Old 08-18-2011, 09:17 AM
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Keep them away from road salt and such as the galvanizing is far from being a cure-all, remember the factory only guaranteed them against rust for 6-10 years, lots of rust had to be cut out of this car;

http://forums.pelicanparts.com/paint-bodywork-discussion-forum/506621-project-911r-something.html
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Last edited by Mikey83835; 08-18-2011 at 09:30 AM..
Old 08-18-2011, 09:28 AM
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