I am thinking about buying the complete suspension package(springs and bars) to add to my Tokico HPs.

Anyone have any input with these who have been on the track?

Give me the good and the bad.

Thanks.

 

They're bent round pieces of metal, what's to know? They work just fine, but aren't adjustable. If I were to do it again I'd probably go with Eibach as the rear is adjustable.

 

Smart ***

To much oversteer with the rear?

 

They work great for auto cross and some track use, Great bang for the buck.

 

Thanks

 

btw, how are those tokicos treating you?

 

With stock springs I found them to have understeer. I'd go with a bigger rear bar.

 

I havent heard anything bad about the racing beat suspension package, and I myself am doing the same setup but with KYB ABX shocks, or are tokico's better?

 

I have had the Racing Beat front bar on my car for almost 14 years. I never bought a larger rear bar because it was not legal for stock class SOLO II.

I had Koni's and Suspension Techniques Springs on the car and it handled very neutral both on street and track with the RB Front bar.

I am now running Stance Coilovers and with the factory rear bar connected there is way too much oversteer. Had the car swap ends in 80mph corner just after turn in (Turn 1 at Hallett). I have since disconnected the rear bar and the car is almost neutral with still a hint of oversteer. To my knowledge most if not all SCCA ITS RX-7's remove the rear sway bar.

My opinion is that a Rear sway bar on a non stock suspension RX-7 is not a wise investment.

 

I checked my numbers and according to them the RB bars move the balance towards the front.

Many remove the rear bar for ITS, but a number of people still use them.

I run 7kg/mm (390lb/in) front and 5kg/mm (280lb/in) rear springs with an RB front and stock rear bar and it still understeers a little for me. I'm at a reasonably high ride height at the moment with a decent amount of rear camber (1.3) and not that much in the front (~2, that's what the pyrometer told me to do), so that'll have an effect. I'm going to try taking a little more camber out of the rear (temps were a little hotter on the inside still), but I'm thinking I'll re-install my RB rear bar for street driving and autocross anyway, and swap back to stock for the track if I can get it to balance out.

Eventually I want to weld some new ends with multiple holes onto the RB bars and the stock rear so I can do some more fine tuning of the balance.