tcsracing1

In terms of affordable back dating or RS cloning, which air cooled 911 is the best place to start?

I believe that 1969-1973 are to valuable/expensive to now use as RS donors unless you really got to have as close to correct as possible at any cost.

The 964 is my favorite back date but the cars are getting too pricey for donors and besides, a true torsion spring car is perhaps more authentic as a classic 911.

Would the 1974-1977 be decent as a donor?
How about 1978-1983SC? didnt they come with 73'RS style flares?

And the 1984-1989 carreras? pros/cons?

Which donors would be the most affordable?
Which donors would have the most to offer in term of reuseable parts? (engine, brakes etc)

In doing an impact bumper car for a backdate, I would think one would require the following;

Interior: seats, steering wheel, door panels.
Exterior: Bumpers, stainless window trim.
Engine: more power, exhaust.
Transmission: regear, shifter, mounts.
Suspension: fresh and adjustable.
Wheels: Correct size/style Fuchs.
Brakes: upgraded.

Not sure if i left anything out other then paint and labour...
Anybody have a ballpark on what the parts bill would be?

thoughts?

pcarhiway

TCS,

In my experience the 1986 model works out best, 3.2 liter powerplant is ideal and it is the last year of the 915 transmission.

Here are three good threads on Pelican, the first two are step by step from start to finish of two backdates. I drove in the Targa CA last year and got a chance to check out Craig T's car (started life as a '75 model) in the parking lot the first morning and as you will see in his build thread it is perfect.

http://forums.pelicanparts.com/porsc...-backdate.html

http://forums.pelicanparts.com/porsc...-underway.html

http://forums.pelicanparts.com/porsc...mpilation.html

I'll PM you my phone number and feel free to give a call to discuss your other questions.

Bruce Ladd
bdladd@gmail.com
pcarhiway

Amber Gramps

You want a 915 tranny car. The G-50 cars have the T-bar cut outs, rather than the T-bar holes. My '88 is not a good candidate, but my '84 is.

....and guys, my '84 will be for sale at some point and my labor will be free. Just think about that.

tcsracing1

Interesting folks. 915 tranny is the way to go eh? 1986 is the last year for it too....

Amber Gramps

Yep. The G-50 is heavier and wider. What's up with that?

pcarhiway

1987: The Type 915 transmission was replaced by the Getrag built G50 transmission with Borg-Warner syncromesh. Reverse gear was revised to the left and forward. The clutch size was enlarged to 240 millimeters, same as the Turbo, and hydraulically actuated.

Porsche 911, RED BOOK, 1965 to 1999. Patrick C. Paternie

Amber Gramps

http://losangeles.craigslist.org/wst...455678800.html

http://losangeles.craigslist.org/lac...450822659.html

tcsracing1

what year did Porsche offer the "73' RS" flare on standard 911 body?

pcarhiway

According to this thread the SC flare is close, some interesting side by side photos ....

http://forums.pelicanparts.com/porsc...sc-flares.html

From Chuck Miller in the thread above,

It's simple...

As was said, the arch and the swell of the fender is the same on both.... It's the return or lip that is different......

The SC 'lip' is about 5/8 inch from edge to contour all the way around the opening consistently...

The RS 'lip' starts at about 5/8 inch but then enlarges and flattens to about 1 inch at top of the arch... then gradually come back to about 5/8 as the arch ends...

pcarhiway

From another thread ...

http://forums.pelicanparts.com/porsc...eel-width.html

Hi Guys.
Jack, the '73 Carrera 2.7, be it a RSH (homologation), a RS (lightweight) or a RSL (luxus-touring), had all front wings the same width as the 2.2 and 2.4 liter models; in the back they had flares the same width as the Carrera 2.7, the SC and the Carrera 3.2. Only the RSR had wider flares front and rear, accomodating up to 9 inch and 11 inch wide rims respectively.
RLJ, the Carrera RS had standard 6 inch front and 7 inch rear rims, with 7 and 8 being an option from beginning of 1973, when these were homologated by the FIA. The 911 turbo never had 9X15 rear rims. Only some rare pre production prototypes had these, as they used the body of the Carrera RS 3.0 liters, which carried these rims. Of course, a 9X15 would fit the rear of a 911 turbo, albeit with some care as the offset is not the same as the 9X16.
Yes the 9X15 can sometimes fit the rear of a 2.7 RS. The 1/8 inch spacer is removed, and sometimes the rim fits. These cars were handbuilt, remember, with the flares being hand welded on the narrow rear fenders.
As a rule of theumb if a 6- 7- or 8-inch wide rim fits in 15 diameter , the same fits in 16 diameter.
Hope this helps, George

rusnak

Interesting about the 915 tranny.

I was thinking the 964 would be a good candidate because you'd have the much better AC condenser, and the better torque of a 3.6 when I remembered that the Singer 911 is also based on a 964. And then there is the 993, which has vario cam timing.....

tcsracing1

the 964 makes for a fun donor because you get decent A/C, coil over suspension and ABS brakes.

tcsracing1

I imagine that a 74-76 Carrera 2.7 is a harder car to find compared to a 1978-1983 SC or 1984-1989 carrera 3.2..... Therefore not as affordable as the latter donors..

Being nice to already having a factory flared body to work with, which era 911 would be more desireable as a donor? 1978-1983SC or 1984-1986 3.2?
What year did Porsche stop using stainless window trim?

Reiver

Maybe a fun donor but not the feel...coil overs and abs.....not the torsion bar you need to learn how to brake experience....btw, real OLD sports cars do not have AC.
AC became required with a decrease of testosterone.

tcsracing1

do you older fellas really like the torsion bar suspension?

I have never driven one so i have no idea. I can only assume it is decent because there is so much love for these old things... And i have seen them wheeled very fast around a track.