Kentetsu

Okay, here's the deal. Stock steering sucks for a number of reasons. Right? I mean, even if you manage to get rid of the "wonder steer" (which I have done) you still have to put up with a steering ratio more suitable for a large bus than a sports car.

Now, the Pitman arm comes off the box and works the whole assembly. If it were slightly shorter, then you would reduce the number of "turns of the wheel" needed to make the corners. Right?

I was considering having one cut/welded, but when you stop to consider the fact that if it breaks you really are screwed, I am now looking for other options.

What I'm thinking now is that this steering box is a throw back from the Ford company. So, it is probably a fairly standard unit. So, maybe there is another arm made for another application out there that fits the same way, but is slightly shorter in length.

I'd like to think that it could all be that easy, but you're still left with the question of "how do you begin to find out?". So here I am, presenting my question to the largest collection of grey matter that I currently have access to. Don't let me down now guys.

Kentetsu

Aw, come on guys. Doesn't somebody work at a parts warehouse or something? lol...

aussiesmg

iTrader: (1)

Wouldn't shortening the Pitman Arm just increase effort as it reduces the leverage not the amount of turn.

MosesX605

I don't think it's as simple as that. The Pitman arm and the idler arm must be the same length, so at the very least you'd have to find a shorter idler arm. Wouldn't this also muck with the caster as well since you're essentially moving the bottom of the strut back in the wheel well by shortening the steering arms?

Siraniko

iTrader: (13)

Just replace the entire GS steering box with a GSL but junk the power steering

Re-Speed.com

iTrader: (3)

Shorter would increase the number of turns for the same amount of wheel angle change. I did a quick drawing. The 4" and 3" numbers were just pulled out of the air, not true pitman length.

It shows that changing the length shorter will give you less angle. You would also need the pitman and idler to change the same amount (As posted above). This would effect bump steer not caster though.

-billy

aussiesmg

iTrader: (1)

Nice work Billy, and good point Moses, I overlooked that entirely.

Kentetsu

Ah, yes Billy I did have that backwards. Also, the idler arm would indeed have to be changed. I know that Datsun Racing offered shorter knuckles for the Z cars to quicken the steering ratio. Too bad we don't have something like that available...

teamzzyzx

if you have any kind of drawing skills and patients, try www.emachineshop.com and make a prototype and test it out. thats probably going to be the best thing to do, trial and error ya know. interesting idea though.

trochoid

iTrader: (6)

Changing the length of the idler and pitman arms will also move the center link.

ratboy

iTrader: (1)

I looked into having some prototypes made at emachineshop for some aquarium stuff. I downloaded the software, designed my parts and had it priced and it was hella expen$ive!! I think it'd be cheaper to experiment with junkyard parts and if you find something that may work then pony up for custom parts to be made.

j9fd3s

iTrader: (3)

it might be easier to make the steering knuckles/steering rod things, they are pretty simple parts

Rx-7Doctor

iTrader: (13)

Just put in the Se box and your done.

Re-Speed.com

iTrader: (3)

I was thinking about it while waiting for the new CART car to test at Road Atlanta today. Pick attached.


I think the best idea would be to shorten the steering arms. This would quicken the steering angle. You would probably mess up the bump steer and need to move the drag link forward the same amount that you shorten the arms by. To do this you would need to lengthen the pitman and idler arm.

You might get lucky and not fubar the bump steer and be good. Although longer pitman and idler would help give you more angle with less steering input as well.


You could try the arm mod simply with a flat piece of material with 4 holes in it. 1 for the tie rod, 2 for the strut mounting bolts and one for the ball joint. To test it you would not need the taper reamer for the ball joint and tie rod hole. You would need to devise a way to measure the angle of the wheels when turned, so you can test before and after. You should really bump steer it before and after as well.

-billy

Cowboyfun

RX7doc has it on this one. BTW, ford wasn't involved with mazda until 86-87 era. so everything before then is pure mazda, thats also why its so hard to get factory parts, because when ford took over they threw it all away. *end history lesson*

trochoid

iTrader: (6)

Really, then perhaps you could explain the relationship between the REPU, produced from 74-77, and the Ford Courier.

Siraniko

iTrader: (13)

I think I read this somewhere in the old school section. yup. here ya go.

KansasCityREPU

iTrader: (9)

Didn't Ford and Mazda work on the Rotary Pickup and Courier at the same time in the mid 70's?

ray green

iTrader: (14)

I kind of like the stock steering, that's one of the reasons I drive my 84 GSL to work every day.

Ray

79rx_7

Mazda was selling the Couriers to Ford because Ford could not make anything comperable at the time. Basicly Ford sucks *** and went to mazda for quality trucks.

trochoid

iTrader: (6)

Sounds like a relationship to me. What I don't understand is the REPU was USDM only, not even imported to Canada. So who made the REPUs, Ford or Mazda? I cannot picture a UAW line worker installing a rotary engine in anything with the animosity to Japanese imports in those years. I got so much **** when I bought my 73 and 75 Civics from guys I worked with back then, even in a non-union shop.

Sorry for the thread jack, this is probably better left to another thread.

Hyper4mance2k

iTrader: (40)

Rack and pinion is the best solution.

kenn_chan

amen to that brutha

kenn

j9fd3s

iTrader: (3)

mazda made the repu's in japan. it is odd that its usdm only though

dymosupras

using a gsl box has its ups and downs especially if its a used one an aftermarket tight ratio box has its downs as well such as making it fit its like anything else speed costs money and time how fast do you wanna go