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Author Topic:   12:1 Steering Box Question
ddoti1
Dirt Full Roller

Total posts: 49
posted April 18, 2005 07:20 PM  
I bought one brand new and it has 12:1 stamped on a plate on top... now off the car when you turn it, it takes 3 complete turns stop to stop ! The steering box on the car when I turn it takes 2 1/4 turns and its a stock monte carlo box, what s the deal with this it seems the stock box is shorter if it only takes 2 1/4 stop to stop instead of 3.... can someone straighten me out on this or will it make a big difference once I put it on the car ?

racer17j
Dirt Forum Champ
Total posts: 5390
posted April 18, 2005 08:25 PM  
I have discovered that there are different travels in some of these boxes. I bought a 12:1 from a parts store to replace my 14:1 that was getting loose. When I had both boxes out and was messing around with them the new box was faster and had more turns as well.

Take both boxes and make one full turn at the input shaft and measure how many degrees the pitman arm moves. For a 12:1 box it should be 30 degrees.

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- When in doubt, hit the gas.

340duster
Dirt Maniac

Total posts: 195
posted April 19, 2005 09:08 AM  
ratracer is right on. Depending on the body style camaro, monte etc, they have different internal stops (so the tires don't hit the frame, fender etc, when turned at full lock). The only way to tell is by measuring the angle of the output shaft, you can use a degree wheel to do this.

o5racer
Dirt Freak

Total posts: 402
posted April 19, 2005 10:14 PM  
Heres an easier way than a degree wheel. clamp the box in a vice upright and measure from the center of the hole on the end of the pitman arm to to wall or something solid. turn the input shaft exactly 1 turn and remeasure.
Nick

A&M Motorsports
Dirt Maniac

Total posts: 117
posted April 20, 2005 05:44 AM  
quote:
Originally posted by ratracer10:
I have discovered that there are different travels in some of these boxes. I bought a 12:1 from a parts store to replace my 14:1 that was getting loose. When I had both boxes out and was messing around with them the new box was faster and had more turns as well.

Take both boxes and make one full turn at the input shaft and measure how many degrees the pitman arm moves. For a 12:1 box it should be 30 degrees.



What application did you use to find a 12:1 box? Parts stores nowadays use computers and the parts person usually don't no squat if you can't tell them make, year, model, engine size and stuff.

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Artie Perilloux
A & M Motorsports

ddoti1
Dirt Full Roller

Total posts: 49
posted April 20, 2005 06:10 AM  
quote:
Originally posted by A&M Motorsports:
What application did you use to find a 12:1 box? Parts stores nowadays use computers and the parts person usually don't no squat if you can't tell them make, year, model, engine size and stuff.


I bought it from a chassis builder....! And like I said it has 12:1 stamped on top of it, but I was in disbelieve

    

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