For a street driven / occasionally auto-crossed FD which way would you go?

1) Stock Toe-Links and Trailing Arms with SuperPro Bushings (already have them)

-or-

2) Rotary Extreme Toe-Links and Trailing Arms (Group Buy going on now - http://www.rotaryextreme.com/rodgb.html)

Every time I look at the factory toe-links and the SuperPro bushings I can't see how they can possibly have the range of motion that the original pillow-***** had.

This is not a daily driver but I don't want it to be harsh either..

Thanks.

 

Come on..nobody has and opinion on this?

 

Honestly, any of them are fine.

the Heim jointed parts won't last as long as the poly bushings. There is basically no wear with poly. Heim joints on the other hand do wear out especially on a street car.

That being said, my Rotary Extreme parts are holding up very well after 3 years. I do periodically clean them though. The dust shields that Chuck integrated into his design works very well. I'd say that the RE links are the best design ever made as a result of that.

 

I hear ya on the wear and tear of the Heim joints although as much as I will be driving the car they will probably last 10+ years.

I am also concerned about the poly bushings not have the required range of motion the original pillow ***** had. I don't think Mazda would have gone to the expense of putting pillow ***** in the toe-links if they weren't needed..

 

Buy and read the RX7 book. They describe how Mazda designed certain bushing to behave in a certain manner under load. IIRC, the OEM toe bushings (other bushings also) were designed to deflect slightly and change toe under braking and hard acceleration. Can't remember if it added tow in or tow out.

I think c2racers.net had them in stock last time I was there. C2 shares some space with Goodwin Racing fyi. Good guys there.

 

I would think they would create toe-in if they deflected, which would increase straight-line stability. Still, I don't think it's any bit of a handling necessity. Sounds like more of an idiot-proofing than anything. My choice was a set of aftermarket links (not RE, though) for the simple sake of smaller, inset links so that I could fit 10" wheels out back.