Mike951

If i were to install a set of turbo s torsion bars into my stock '86 951, would i need to increase th spring rate in the front to match the larger torsion bars in the rear? What size are the '86 t-bars and the turbo s t-bars? What is teh stock front spring rate on an '86 951? What would you upgrade to for a better handling street car?

Thanks
Mike

Mike Buck

I would upgrade the springs and torsion bars for sure, but I would look right past the Turbo S stuff. Swapping stock 951 bars for "S" bars would be a colossal waste of your time, IMHO.

Either new Bilstein or Koni dampers(with the right valving) paired with 300-350# springs and 28-29mm TB’s. That would make difference you can feel. Later on upgrade the swaybars

Mike951

The whole reason I'm doin this is to fix a rear sag issue, I want to keep the car comfortable on the street. I didn;t want to really touch the t-bars, but it seems like my only option to get the car back to the right height, and i just so happend to find someone selling turbo s tbars. I was thinking I could put those in then go with a higher # spring in front to compensate for the largewr t-bars, and try and get a better handling yet still comfortable street car. I'm I totally off the mark here, I have a limited knowledge on 951 suspension stuff.

Mike

JonM..

there is a cam adjustment on the rear trailing arms, you should be able to raise the suspension a bit using this to compensate for the sagging.

Mike951

Sorry, forgot to mention that my eccentric bolts have been maxed out, someones been in there before and they are maxed, the car won't get any higher.

Bri Bro

I would go with Weltmeister 250 lb on the front.
http://www.paragon-products.com/product_p/sp-250.htm
If you want to keep factory ride hight, get the 1 inch spacer for these springs.
on the rear, 28 (or 29) Tbars.
http://www.paragon-products.com/product_p/saw_944tb.htm
Might want to replace the bushing while your into the Tbars.

brad-cam

Or put on the Weltmeister 220 lb fronts, the ones labelled "stock height". No spacers required
and they dropped my front end about 1/2 ". This might be enough to level your car and the stock rear torsion bars seem to work ok with them.

Elephant Chuck

If your cam adjusters are maxed, you just need to re-index your torsion bars. Re-indexing will let you set to any ride height you desire.

There is no reason to replace tbars (that are not rusted or physically damaged), unless you specifically want go to a higher spring rate.

Re-indexing is a more involved job than simply turning the cams, but it will need to be done if you install new tbars anyway - 6 of 1, 1/2 dozen of the other.

Note that your sagging ride height is likely to be at least partly due to tired spring plate bushings. These cold-flow over time. Take this opportunity to replace the bushings too.

I just posted a detailed how-to over on the 944 board explaining the whole process.

Here is a link to that how-to:
https://rennlist.com/forums/924-931-944-951-968-forum/147541-how-to-spring-plate-bushing-replacement-part-1-a.html