70 911T back on the road, time for suspension overhaul

[hotdogwater]

I finally (after 10 years) have my 1970 911T running and driving and am starting the process to overhaul the tired suspension. The rear spring plates show the elliptical shape and have little rubber left on the top side. So after reading hundreds of threads on the subject I am have decided to run rubber bushing for the rear (car will fun street car not tracked or autox). I can't find factory Porsche/OEM bushings for the spring plate and see URO, Dansk, Elephant Racing, and RSR seem to be the common offering.

I think I have narrowed it down the ER or RSR HD. Any reason to pay almost 2x for the ER over the RSR rubber spring plate bushings?

Next is deciding the torsion bar replacement so if you have any advise for those, I welcome suggestions. Thinking the 26mm sway-a-ways but still early in the research phase.

I got to drive my car to pick up some oil from local auto parts place as my first non-testing drive in the car and love it. The looks from strangers, waves and thumbs up from car ppl make it all worth the years of effort.

[MrBonus]

I run 21 in the front and 27 in the rear and I'm happy with them. I have Bilstein B9s in the rear and Konis up front. I run the RSR trailing arm bushings, Tarett camber plates, and Rennline adjustable spring plates.

I also went ahead and did the PMB AM calipers and 23mm master cylinder.

[Bill Verburg]

Originally Posted by hotdogwater

I finally (after 10 years) have my 1970 911T running and driving and am starting the process to overhaul the tired suspension. The rear spring plates show the elliptical shape and have little rubber left on the top side. So after reading hundreds of threads on the subject I am have decided to run rubber bushing for the rear (car will fun street car not tracked or autox). I can't find factory Porsche/OEM bushings for the spring plate and see URO, Dansk, Elephant Racing, and RSR seem to be the common offering.

I think I have narrowed it down the ER or RSR HD. Any reason to pay almost 2x for the ER over the RSR rubber spring plate bushings?

Next is deciding the torsion bar replacement so if you have any advise for those, I welcome suggestions. Thinking the 26mm sway-a-ways but still early in the research phase.

I got to drive my car to pick up some oil from local auto parts place as my first non-testing drive in the car and love it. The looks from strangers, waves and thumbs up from car ppl make it all worth the years of effort.

for a street car on 6's and 185/70 x15 tires, you'll want new rubber bushes all around, I'm partial to the Elephant sport rubber versions, also while in the why no replace the trailing arms w/ adjustable versions, Rennline has some nice ones w/ a sport rubber option.

riding on fairly narrow , less sticky rubber the stock t-bars are fine unless you want to reduce sway, if so no bigger than 20/26, Sanders hollow , plated from Elephant are the way to go. an option is to go w/ bigger sways, like from a 3.2 Carrera or even adjustables.

[Hi_Fi_Guy]

Porsche Club of America ran a multi part series on refreshing the suspension on early 911s with modern components in 2024. If you are a member you can download the issues for free. Very informative and even if you do not copy their exact setup the information provided is worth reading.

[crater64]

I followed a similar recipe to what's been described here thus far for my '70T. All suspension rubber replaced with Elephant rubber, sport hardness where available. Stock 15/15 sway bars. Torsion bars are 21/27, hollow Sander plugged/plated by Elephant. Bilstein Sport all around. FWIW I replaced the front calipers with rebuilt Alfa Brembo calipers. I had the stock 2.2T rebuilt as a 2.5LS so wanted a little more stopping power.

I was rolling on 195/65 P6000s on ET23.3 7s, but those tires aged out and last fall I switched to 185/70 CN36s. They're a little stretched but not terribly so. Hope this helps.

[Bill Verburg]

Originally Posted by crater64

I followed a similar recipe to what's been described here thus far for my '70T. All suspension rubber replaced with Elephant rubber, sport hardness where available. Stock 15/15 sway bars. Torsion bars are 21/27, hollow Sander plugged/plated by Elephant. Bilstein Sport all around. FWIW I replaced the front calipers with rebuilt Alfa Brembo calipers. I had the stock 2.2T rebuilt as a 2.5LS so wanted a little more stopping power.

I was rolling on 195/65 P6000s on ET23.3 7s, but those tires aged out and last fall I switched to 185/70 CN36s. They're a little stretched but not terribly so. Hope this helps.

Nicely done!