custom anti bump steer spindles?
 

does anyone here know of a company that makes an anti bump steer spindle for the FD?
i have the Rx7 specialties sub frame kit that comes with the bump steer pieces but i really dont like the look of them, i really dont feel comfortable with having a " weight arm" at such an important part of the car.
a spindle with a lowered arm must be a better option?

does anyone here run the complete kit and want to share their experiences with it?

WR

Martin

I think chip at chips motor sports does

What is it that worries you about the rx7specialities spindle extension pieces?

I'm using these, so far no issues at all. Drives perfectly straight and predictable, it just understeers/pushes into turns a bit more than the 13b engine.

the thought of a weight arm on that spot bother me a bit+ some say its makes the car twitchy.
but you say yours behaves fine? you dont notice anything different during normal driving?

What do you mean by weight arm??

When you say "weight arm" are you thinking "lever arm"?

As in the spacers add a "lever arm" for forces traveling through the tire/wheel/bearing/spindle into the steering arms that causes more deflection of the spinlde arms?

Instead of the spindle bolting directly, there is a spacer that goes on first. Not sure what is meant by weight on the arm? The arm itself is the same. Its just bolted an inch or so lower, so that the drop in the rack is offset

Everything is fine normal driving. Only issue is castor is forward a bit more. The front wheels set a little further forward, but this is likely due to the position of the suspension arms on the replacement subframe.

Sometimes a tiny tiny bit of play/hunting is perceive at very high speed. But if its in boost w weight on rear I dont feel anything. Its really very very minimal.

Like I said the main issue is the forward weight of 20b making the car feel like it understeers.

Why not just leave the spindles stock and change out the tie rod ends?

HINSON Bumpsteer Kit FD RX7 1993-1997 LS1 20B

I actually think I have your entire previous kit Gmonsen! Yes it hunts just a tiny bit, but only noticeable on interstate at high speeds, never noticed over bumps thats interesting. Prob wouldn't even know if id never driven a stock FD first

Wow engine mounts made that much of a difference..?
This all sounds like bumpsteer issues to me.
From my experience when I was testing for bumpteer its very very hard to get it perfect. I was able to achieve perfect on my setup but I often wonder how many cars with aftermarket setups have bumpsteer issues or so called hunting... it would drive me nuts.

Wondering the same. Keeps mentioning weighted spindles...?

Pretty sure that's what OP is talking about, they're just not hip with the lingo. Not sure why it's blowing everyone's mind.
OP is also right. Bumpsteer correction kits are sketchy.

Weight arm is a lever.....(and weight arm is what my British physics book calls it, so its not the lingo ;) )

getting another bum steer kit will result in the same as the RX7 specialties kit, it puts a lever where i really dont want one.
it will put alot more force on parts that quite literally are keeping you alive. + its looks like its asking for steering slop ( i have a RX-4 wagon with an old shitty steering box, and i cant drive that faster than 80mph before it starts getting really scary) i dont want that on a 500hp + torque monster

Interesting! Good to know
I think there is too much paranoia going on here. People have been using bump steer kits on cars for decades all over the world its effect is no different than modifying the control arm aside from the guarantee that it's not going to fail assuming it is done correctly like how chip does it. Although I have never heard of a kit failing.
As far as bump steer most people do not understand what it is and how to test for it. Simply putting a bump steer kit on the car will not fix bump steer you need to install the kit and then adjust using the shims untill the bumpsteer is gone. Using a kit is just easier.
If your going to have the arm modified you need to be 100% on your measurments.

.

Does fine for me at top of 4th gear 130mph, over and over blasting down the freeway :)

Nice!. Hard part is getting perfect bumpsteer correction on cornering with bumps.