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Old 09-23-2009, 10:55 AM   #1
Jay Gratton
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Default Torsion bars for '85 911

I am trying to find some for my '85 911 that I am building into a DE car. Any help in finding some used ones would be great. Thanks! - Jay
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Old 09-23-2009, 04:53 PM   #2
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I recommend 23/31 or 22/28.
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Old 09-23-2009, 05:28 PM   #3
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23/28 combo will leave you wanting more..in the rear! I ran 23/30s and realized with a 23 up front, I really needed a 31-33 rear.

Sorry I don't have any bars for you though.
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Old 09-23-2009, 07:26 PM   #4
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I have a used set of 21 solids cheap, and this winter will have a like new set of 23 hollow with one race on them.

I also have 27 solid and 29 hollow rears but I don't think they fit the '85.
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Old 09-23-2009, 08:31 PM   #5
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T-bars are all the same until you get to the '87 G50 cars, right? (Memory fades on platforms you don't fiddle with anymore.) And concur about needing as big as you can put in the back; first guy who clued me in was one of the fastest POC guys 20+ years ago. I think he was 21/30 on some revalved Bilsteins and it was absolutely shocking when he let me take his car out for a few laps..........
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Old 09-23-2009, 10:10 PM   #6
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I'll chime in too. I have run 22/28 and 23/31 on my SC. Your car is a little heavier in the rear than mine, so slightly larger bar in the rear makes sense. 22/29 or 23/33. Check the Smart Racing website for recommendations. Hawk Pelican and eBay for used bars. I've bought and sold t-bars on both.
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Old 09-24-2009, 01:25 AM   #7
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^ +1 on Smart Racing.

21/30 with appropriately valved Bilsteins [Bilstein will revalve to suit your setup for around $150 per pair], a very light through-body sway bar in front [the stock front sways bind on large deflections] and the big fat Smart Racing sway in the rear. Responsive and very tuneable setup.

BTW, this was the setup on my '85 Carrera before I went over to the dark side.
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Old 09-24-2009, 07:45 AM   #8
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I run a 33mm torsion bar in the rear of my car, which was built by Jerry Woods Enterprises/Smart Racing Products. Anything less for a track only car is too soft.
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Old 09-24-2009, 08:25 AM   #9
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Hey guys, thanks for all the advice. I will start looking for a bigger t-bars. I should point out that this car is being built for DE and will be driven on the street as well. It sounds like everyone is saying to go with 21/30 or 23/31. Correct?
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Old 09-24-2009, 10:43 AM   #10
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For street and DE, I would not go more than 21 / 29. Worked great on my '73 RS (close to track records at every track) till a few months ago when I put in bigger bars.
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Old 09-24-2009, 12:23 PM   #11
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So you would find 28 to small?
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Old 09-24-2009, 01:42 PM   #12
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I'll clarify my statement about 30's in the rear to indicate that was as big as was available in the mid-'80's. Eric's car is a fresh build, and reflects modern thought. My suggestion, if you want to go under 30mm, is to work with someone who understands the dual purpose nature of your car, and matches everything. Seriously, CAN you go out on the track with 19/26 (e.g. stock 930) bars/matched stabilzers/matched shocks and drive it blindingly quick? Of course. There's no magic in merely "bigger is better".
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Old 09-24-2009, 01:58 PM   #13
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22/28 is good for a dual purpose car but remember that torsion bars are expensive and a huge pain in the *** to install... so think ahead. Many people find 23/31 very tolerable for limited street driving.
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Old 09-24-2009, 02:43 PM   #14
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My mechanic that has built MANY 911 track cars suggested to go with 22/28 and this car will still be driven on the street a good deal. I will only be doing 10-12 days a year.
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Old 09-24-2009, 06:01 PM   #15
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Just out of curiosity, do torsion bars from a 944 fit in the 911?
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Old 09-24-2009, 06:01 PM
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1989, 33, 87, 911, adjustment, bar, bars, carrera, mm, porsche, rear, sc, street, torshion, torsion

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