Auto-X Road Race Steering??? - Vintage Mustang Forums

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post #1 of 40 (permalink) Old 11-14-2007, 01:52 PM Thread Starter
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I'm curious as to what set-ups you Road Racing/Auto-X guys use and how you like it?
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post #2 of 40 (permalink) Old 11-14-2007, 01:57 PM
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I have a 16:1 box and a manual setup. A quicker box or a lightweight non-stock floaty power setup would be nice.

Didn't Shelby use a different pitman arm to quicken things even more?
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post #3 of 40 (permalink) Old 11-14-2007, 02:53 PM
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I have a PS box, a manual center link and the Pro-Motorpsorts bumpsteer kit which quickens steering.

The effort is way too high with DOT race rubber. I'm weighing my options for power steering this winter.

5 degrees of caster will rip your arms off by the end of four autocross runs. 2.5 degrees was do-able all day at an open track event.

Jason Kolk www.kolkprepared.com
1965 Coupe - Track Car - Full Street or Track suspension (that's me at the bottom of the page!)
1967 Fastback GTA - in process
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post #4 of 40 (permalink) Old 11-14-2007, 03:10 PM Thread Starter
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I'm surprised you guys are on boxes and not racks? I'm looking into different racks right now. Is there a reason why you guys are on boxes?
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post #5 of 40 (permalink) Old 11-14-2007, 03:17 PM
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I'm using a power box with manual steering.
A roller idler arm helps, but I could use a little quicker ratio yet for autocross.

I suppose a power R&P would be nice, but its not in my budget at this time.

Applejack, how in the world are you getting 5 degrees of caster? I'm maxed out at 3 degrees.


1966 Coupe build for SCCA Autocross
347 V8 - Tremec TKO - ORP Suspension
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post #6 of 40 (permalink) Old 11-14-2007, 03:25 PM
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I've got the spherical bearings in the inner pivot of the LCA's. I copied Opentracker's design but my father-in-law and I did them ourselves. Then I made (FIL's help again) my own strut rods with the heim joint in from and we threaded the stock strut rod on his lathe.

I could probably get 6 or more degrees, but I just know I won't be able to turn the wheel. At some point the LCA hits the chassis at the bracket. I haven't found that limit yet.

I haven't decided if I'll use a rack or not. I'm strongly considering the option on the link below for cost reasons. My headers may still work as well. I'm budgeting for a few other things this winter and saving a grand sounds pretty good to me!

http://corner-carvers.com/forums/showthread.php?t=36047

Jason Kolk www.kolkprepared.com
1965 Coupe - Track Car - Full Street or Track suspension (that's me at the bottom of the page!)
1967 Fastback GTA - in process
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post #7 of 40 (permalink) Old 11-14-2007, 03:32 PM
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Interesting...
I have ORP's lower control arms and adjustable length strut rods.

What size front tire are you using?


1966 Coupe build for SCCA Autocross
347 V8 - Tremec TKO - ORP Suspension
www.geocities.com/2bav8
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post #8 of 40 (permalink) Old 11-14-2007, 03:37 PM
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uh...huh

Stock?

"If you're under control you're not going fast enough"
Parnelli Jones

Visit Roadracers Corner
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post #9 of 40 (permalink) Old 11-14-2007, 03:40 PM Thread Starter
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post #10 of 40 (permalink) Old 11-14-2007, 04:13 PM
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Quote:
Originally Posted by 2bav8
What size front tire are you using?
Currently a 15x8 with a 225/50/15. Next year I'm moving up to 17's.

I have yet to trial fit the fronts, but the rears will be 275/40/17 Kumho's. With even more tire and borderline bearable steering effort now, I'll for sure need power steering.

Bodywork starts in a few weeks to stuff all of that tire under the rear. I'm going to try the '67/8 outer wheelhouse and stretching a new '65 rear quarter on. The fronts will for sure need some massaging.

Jason Kolk www.kolkprepared.com
1965 Coupe - Track Car - Full Street or Track suspension (that's me at the bottom of the page!)
1967 Fastback GTA - in process
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post #11 of 40 (permalink) Old 11-14-2007, 05:51 PM
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I'm running the TCP manual R&P - love it on the track; hate it in parking lots.

Tim

'65 2+2
347 - Holley DP - 471 fwhp
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post #12 of 40 (permalink) Old 11-14-2007, 06:02 PM Thread Starter
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how was the install?
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post #13 of 40 (permalink) Old 11-14-2007, 08:28 PM
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Keep in mind that this is coming from an inexperience track driver...

I'm just putting the finishing touches on my 67 street/track car. I have a manual 16:1 Flaming River box, moog idler arm, reinforced center link from Cobra Automotive, and a Baer Tracker bump steer kit that attaches to 70 spindles with Falken AZENIS RT-615 225/50R16 up front.

I'm still putting break-in miles to sort out the bugs on all the new components (including new engine, trans & rearend), so I haven't had it on a track yet. On the street it takes some real effort to maneuver at slow speeds (<10mph), but it feels great at speed... very responsive with a lot of road feel.

I'm definitely excited to have my first on track experience this spring

67 C code fastback - more pics
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post #14 of 40 (permalink) Old 11-14-2007, 10:07 PM
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I have a new F-R 16: 1 manual box, quick steer kit, roller idler, stock upper and lower arms, roller perches and adj strut rods. I'm running 2 degrees of caster and -1.5 degrees of camber with 215/60R15 tires (street and Hoosiers).
I wouldn't change a thing now! Yeah, it's a little hard at very slow speeds, but on the road and the track......it's perfect :thumbup:

-Mark-

1966 Mustang 2+2

"Money can't buy happiness, but it can buy a race car. And I've never been sad in a race car!"

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post #15 of 40 (permalink) Old 11-14-2007, 10:49 PM
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I've got stock factory P/S, but I'm also running 7 degrees of caster (strut rods shortened all the way and a couple of alignment shims slipped behind the forward UCA attachment). Yeah, there's the center-steer dead spot (about 1" at the rim of my 13" diam steering wheel) but everything else is good enough that I'm willing to live with it. Rode's Restoration in Galion OH did something during the rebuild of my control valve to reduce the dead spot.

70 Mustang Vert--Konis, Addco, springs, Shelby drop, SSBC front discs, 2.75:1 T-lok, Magstars, Michelin X-Ones, 302, Autolite 4100, cam, Hipo manifolds, C-4. Not a car like I had when I was a kid--rather, a car like I WANTED to have when I was a kid.

Also into American Flyer electric trains--Its never too late to have a happy childhood.
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