Correct TBs and Shocks for 2000 lb. Car?

[911 SLANT]

Any input appreciated. 2,000 lb. Car 70% street 30% canyon carver / autocross. 20mm Tarrett sways front and rear. Bilstein sport shocks front and rear. Running 9x17s and 11x17s. 225/45-17 - 275/45-17

[Tyson Schmidt]

21 front 26 rear would be my recommendation.

People tend to overdo spring rates on street cars, thinking they’re getting more for their money going bigger.

[911 SLANT]

Thanks Tyson, I was going to call you tomorrow and ask you. All good now. You wouldn't happen to have some 21mm laying around? Or maybe do a trade for the 23mm

[Solamar]

Just for another point of reference-

2400 lb
20f 27r torsion bars
22f 19r Tarett sways, set soft
Digressive Bilstiens valved to my weight and spring rate.

90% rough back country canyons and couldn't be happier with the ride. Minimal body roll, front end is planted, excellent turn in. Have yet to get the rear end loose (saving that for a track day).

[manbridge 74]

And another....

2200lbs
19f 26r
911 Clubsport bars 22mm f&r
Acceptable corner balance but not perfect
Will only rotate mid-corner with aggressive acceleration or a major throttle pedal release.

[911 SLANT]

Originally Posted by Solamar

Just for another point of reference-

2400 lb
20f 27r torsion bars
22f 19r Tarett sways, set soft
Digressive Bilstiens valved to my weight and spring rate.

90% rough back country canyons and couldn't be happier with the ride. Minimal body roll, front end is planted, excellent turn in. Have yet to get the rear end loose (saving that for a track day).

What height do you have your front set at? I run 23mm front torsion now with 20mm Tarrett euro height at 25.5 no bumper stops on shocks. My issue is I have no travel. When I push town on front bumper. I can only think that the 23mm are to stiff. I have my sway bar slid all the way forward on soft. This is why I'm going to go with 21mm. Hopefully I get the front to give. Can you push down your bumper?if so how far will it travel.

[Solamar]

Originally Posted by 911 SLANT

What height do you have your front set at? I run 23mm front torsion now with 20mm Tarrett euro height at 25.5 no bumper stops on shocks. My issue is I have no travel. When I push town on front bumper. I can only think that the 23mm are to stiff. I have my sway bar slid all the way forward on soft. This is why I'm going to go with 21mm. Hopefully I get the front to give. Can you push down your bumper?if so how far will it travel.

About 25.25" at front fender. I am not able to see or feel any suspension travel when I put my body weight on the front bumper, I doubt that is a realistic way to judge suspension health.

BTW, I have poly bronze a arm bushings and with the tbar removed and shock disconnected I have verified free suspension movement.

[Jeff Alton]

911 Slant, based on your wheel description, you have a wide body car. Is it running early steel trailing arms, aluminum trailing arms or 930 arms? What is your threshold for comfort? Are you interested in valving the shocks/struts?

What bars are in it right now? How do you like the handling/ride balance? What specifically are you wanting to change in that regard?

Cheers

[911 SLANT]

Originally Posted by Jeff Alton

911 Slant, based on your wheel description, you have a wide body car. Is it running early steel trailing arms, aluminum trailing arms or 930 arms? What is your threshold for comfort? Are you interested in valving the shocks/struts?

What bars are in it right now? How do you like the handling/ride balance? What specifically are you wanting to change in that regard?

Cheers

My car has Carrera aluminum trailing arms and front control arms. Running 23/30 TBs. Bilstein sport shocks front and rear. 20mm adjustable Tarrett front and rear sway bars. Rear suspension feels fine. The front rides a little hard for Street. Car is 75% street 25% canyon and autoX

[chrisbalich]

My car is a little heavier at 2250, but I run 21/31 with Von shocks. (L2 f, L3 r)
It's compliant enough for the street that my wife doesn't complain.

[911 SLANT]

Originally Posted by chrisbalich

My car is a little heavier at 2250, but I run 21/31 with Von shocks. (L2 f, L3 r)
It's compliant enough for the street that my wife doesn't complain.

What size sways are you running?

[chrisbalich]

Originally Posted by 911 SLANT

What size sways are you running?

At present, I have the 915 Carrera bars. (21/20, I think)
But I have Elephant RSR adjustables waiting for me to install if/when I get over being lazy.


EDIT:
It's probably worth noting that my car is SC width, pretty low (23 7/8" ground to fender up front, 24 1/8 rear), has raised spindles, and lengthened LCAs.

[brianlay]

Pretty stiff 23/30 is race car territory

[rattlsnak]

I always run 23/31... So what if it rides a little stiff on the street? It'll be just right when you need it the most - on the twisties and for AX..

[ian c2]

I have a set of 86 930 bars in the attic .
If you’re interested in trying them out , let me know and I will dig them out .
They’re yours if you come collect them from south oc (Laguna hills)
Iirc they 19-26 , and could give a good impression on a car your weight to compare with what you have now .
If you can do your own install it will be an easy way to work out what you need …

Note :
I’m not a big fan of using used/unknown parts like suspension without a thorough inspection but you should/could be good for a few weekend blasts .

[911 SLANT]

Originally Posted by ian c2

I have a set of 86 930 bars in the attic .
If you’re interested in trying them out , let me know and I will dig them out .
They’re yours if you come collect them from south oc (Laguna hills)
Iirc they 19-26 , and could give a good impression on a car your weight to compare with what you have now .
If you can do your own install it will be an easy way to work out what you need …

Note :
I’m not a big fan of using used/unknown parts like suspension without a thorough inspection but you should/could be good for a few weekend blasts .

Thanks Ian, I'll keep you in mind. I'm going to try the 21mm first and see how that works out.

[safe]

Tyson is a lot more qualified than me but I prefer 19/26 over 21/26 in an early car. I've driven that in auto-x and its excellent, just have to power out of the skids.
I have 21/29 now.

[Jeff Alton]

Originally Posted by 911 SLANT

My car has Carrera aluminum trailing arms and front control arms. Running 23/30 TBs. Bilstein sport shocks front and rear. 20mm adjustable Tarrett front and rear sway bars. Rear suspension feels fine. The front rides a little hard for Street. Car is 75% street 25% canyon and autoX

I am guessing a wee bit of understeer as well? Slightly softer front torsion bar would likely help.

Cheers

[911 SLANT]

Jeff, you are correct. Hopefully 21mm front torsion bars will do the job.

[911pcars]

Consider the Bilstein shocks from Rebel Racing. RR, via Bilstein, offers custom steel bodied shocks built per your car specs (ride height, vehicle weight, spring rates, type of driving, etc.). Optional adapters for adding coil-overs as well.



Sherwood
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