When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Founders Performance manufactured this 3rd Gen F-Body Bump Steer kit with Aerospace T6511-6011 aluminum. The spherical rod end bodies are manufactured from heat treated chrome moly alloy steel and are then clear zinc plated for greater rust protection. The Ball is 52100 steel (Rc 56 MIN) and hard chrome plated rated with a static radial load rating of 18,000 lbs.
Features and Benefits:
5/8″-18 thread grade 8 bolt for superior strength (spindle drilling is required)
Comes with an assortment of bumpsteer spacers for precise adjustments .650″, .350″, .273″, .185″, .115″, .090″, & .045″
Thicker Spacers are CNC machined .650″, .350″, .273″, .185″, .115″
Thinner spacers are stamped and heat treated to the same strength as a F436 washer so they don’t crack like others .090″ & .045″
Corrects Bump steer, prevents uneven tire wear and unpredictable steering
A necessary addition for lowered cars or added caster
Hex adjustment in the center of the turnbuckle for easy adjustments
Works in conjunction with other suspension modification
Replaces factory outer tie rod ends with spherical rod ends for precise steering control
Aerospace T6511-6011 aluminum
Rod end bodies are constructed of heat treated chrome moly alloy steel and clear zinc coated for greater protection
The ball in the body is 52100 steel and hard chrome plated
Rod end liner is sintered bronze with PTFE impregnated for the strongest liner on the market. (not the standard PTFE or injected poly liner)
Important Notes:
Drilling the factory taper in the spindle to 5/8″ is required.
I made a custom bump steer kit on my 92, but I use the Founders rod ends in my kit.
I really like those rod ends.
3 AutoX seasons and they have Zero play in them.
So the "spindle drilling", is it simply that, drill it a little bigger, or do threads need to be tapped in afterwards?
I have several Founders parts on my third gen
Thanks!
Raf
I suspect there might be some misconception by people not familiar with this kind of product. Don't think that the spindle has to be drilled because Founders can't choose an appropriate bolt size to fit your spindle. The drilling process is to eliminate the taper in the spindle and transform it into a straight thru hole. Once you finish that the hole will be slightly oversized and you'll need the slightly larger bolt that Founders provides with the kit.
I used a cheap vertical Mill to drill out/true up my spindle knuckle. In my case a cheap 5/8in reamer sealed the deal.
typically a 5/8 bolt is gonna be about 0.620-0.623in
So there is gonna be a very slight amount of play.
I don't think Founders is Providing a oversize bolt for that kit. It's probably just a normal 5/8 bolt.
That's fine, the tie rods will break long before you kill a grade 8 or 9 5/8 bolt.
I used a cheap vertical Mill to drill out/true up my spindle knuckle. In my case a cheap 5/8in reamer sealed the deal.
typically a 5/8 bolt is gonna be about 0.620-0.623in
So there is gonna be a very slight amount of play.
I don't think Founders is Providing a oversize bolt for that kit. It's probably just a normal 5/8 bolt.
That's fine, the tie rods will break long before you kill a grade 8 or 9 5/8 bolt.
I'd bet that you wouldn't even feel that slop on the street, but being ****-retentive I'm considering cutting the hole the next undersize and then using a boring head to open it exactly to the diameter of the bolt.
Sub 0.005in is basically irrelevant on a car.
100% ok, I'd even go as far as saying 0.020inwould be fine.
Some 737 Max Wing Spars allow me to use a Hi-Loc that's about 0.002in smaller than a hole.
and that's on a damn wing structure that has to survive millions of hours of flight over 25yrs.
