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Bump Steering Kit

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wsa111
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Bump Steering Kit

Post #1 by wsa111 » Sun Aug 30, 2020 8:02 pm

Has anyone installed a bump steer kit.
My tie rods are at an angle that requires attention.
I just ordered a kit from Speedway Motors.
That along with a ball bearing idler arm which reduced steering effort 40%.
I hope my alignment shop will allow closer to + caster rather than being negative with manual steering.
Any comments?
67 mustang,C-4, with mod. 80 hd, custom 500 cfm carb with annular boosters, hooker headers, dual exh.-X pipe, flowmaster mufflers, DSII dist. MSD-6425CL & MSD-Blaster 8252 Coil. Engine 205" .030" over with offset ground crank & 1.65 roller rockers. 9.5 comp., Isky 262 cam.
2003 Ford Lightning daily driver. Recurving Distributors. billythedistributorman@live.com
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B RON CO
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Re: Bump Steering Kit

Post #2 by B RON CO » Mon Aug 31, 2020 9:40 am

Hi, which bump steer kit are you getting? Do you have alignment numbers from the setup now? I'm sure you know more caster gives more high speed stability and helps the steering return to center. My Chiltons manual reads 1/4 negative to 3/4 positve and I see other specs which give more caster for power steering cars. I would have no problem trying 1-2 degrees positive caster. Good luck
B RON CO. Still workin' on it!

1933 Ford Pickup - 59A Flathead V8
1966 Ford Bronco - U14 - 170/200 Straight 6
1966 Ford Mustang - 289 V8

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wsa111
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Re: Bump Steering Kit

Post #3 by wsa111 » Mon Aug 31, 2020 1:38 pm

Getting the kit from Speedway Motors.
QA1 BAX104M Bump steer kit.
67 mustang,C-4, with mod. 80 hd, custom 500 cfm carb with annular boosters, hooker headers, dual exh.-X pipe, flowmaster mufflers, DSII dist. MSD-6425CL & MSD-Blaster 8252 Coil. Engine 205" .030" over with offset ground crank & 1.65 roller rockers. 9.5 comp., Isky 262 cam.
2003 Ford Lightning daily driver. Recurving Distributors. billythedistributorman@live.com
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powerband
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Re: Bump Steering Kit

Post #4 by powerband » Mon Aug 31, 2020 2:03 pm

These QA1 bump steer kits are designed for vehicles that have been lowered and have unwanted toe changes and bump steer during suspension travel.

Is your car lowered?

Changes in OEM ride height greatly affects Dynamic alignment , the Camber, Caster and Toe change throughout suspension travel.

... presuming you are discussing the '67 , i believe the strut rods are non-adjustable?. (AFAIK) only way to seriously increase Caster is to pull LCR forward with the inexpensive adjustable struts. OEM alignment adjustments on early cars (67 ?) do not allow for 'modern' caster settings and interact with camber settings. 60's factory settings were for Bias Ply tires and less steering effort for general public.

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... also interested in Bump-Steer remedies. I have opposite problem with the '61. I'm using Maverick Spindles and outer tie rods are well below the center link.

I try for at least @ 2.5 Positive Caster and @ 1/2 degree Negative Camber. A little rough parking, but like on rails at speed ...


Question : Do later 70's spindles have the tie rods lower or higher than typical 60's car spindles ?

have fun

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" Everything in my garage has a story ..."

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wsa111
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Re: Bump Steering Kit

Post #5 by wsa111 » Fri Sep 04, 2020 11:57 am

Sent that kit back. Its for the wrong year & is for lowered vehicles.
I found Global West Suspensions. The kit #1967-1973 Mustang Bump Steer Kit # ADJ-43.
However you have to drill out the taper in the spindle to use a bolt to shim the outer tie rod up to get the tie rods level with the inner tie rod.
67 mustang,C-4, with mod. 80 hd, custom 500 cfm carb with annular boosters, hooker headers, dual exh.-X pipe, flowmaster mufflers, DSII dist. MSD-6425CL & MSD-Blaster 8252 Coil. Engine 205" .030" over with offset ground crank & 1.65 roller rockers. 9.5 comp., Isky 262 cam.
2003 Ford Lightning daily driver. Recurving Distributors. billythedistributorman@live.com
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powerband
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Re: Bump Steering Kit

Post #6 by powerband » Sat Sep 05, 2020 10:17 am


Sent that kit back. Its for the wrong year & is for lowered vehicles.
I found Global West Suspensions. The kit #1967-1973 Mustang Bump Steer Kit # ADJ-43.
However you have to drill out the taper in the spindle to use a bolt to shim the outer tie rod up to get the tie rods level with the inner tie rod.


Sounds real promising , real interested in your bump-steer abatement project. Drilling tie rod bore is simple enough (although irreversible)

I ran 'Flipped" center link with the 61/250 setup with Pittman and idler taper 'reversed' (Kudos- Schehldahl Bros' (sp?). Later swapped 65 V8 parts with Maverick (4 Lug) spindles which has more Crank-Pan clearance -

post pics ... .

Hve fun
" Everything in my garage has a story ..."

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