Hi I am building Time attack crx. Do different brand upper control arms give different amounts of castor? If so which ones would give the most?

Thanks

 

First, there are not many upper control arms that work on the CRX in the aftermarket. I am only aware of 3 different ones, and only 2 of them fit correctly out of the box...

The 3 are Skunk2 EF arms, Special Projects Motorsports UC arms, and then all the rest, including the Ebay no-name brands that claim to fit the EF.

Out of the 3, the best, hands down, are the Special projects motorsports ones. They have the most robust ball joints and the best fit out of all of them.

Second in line are the skunk2 EF arms. They fit well, but the ball joint life expectancy is not good, and certainly not as good as the special projects motorsports version.

Third is just about everything else you will find for the EF. Most of them are EG arms they claim will work on the EF, which they will bolt up and work, but they don;t fit right. You have to grind or cut them to get them to fit under the EF fender wells, and they are all basically a waste of time and money.

As far as adjustment, it really is limited to clearance in the fender well. I would say the special projects motorsports are the ones to go with. Slunk2 Ef arms probably have the same adjustment range as the SPM ones, but the SPM arms ball joints will last longer.

 

you really want much more caster?