I'm sitting here looking at underdriving pulleys from rx7.com and some from Unorthodox Racing. The rx7.com ones seem to have an emphasis on underdriving and less weight and the Unorthodox ones push weight savings more and underdriving much less. Anyone had experience with both or can give a good recommendation? Any help will be greatly appreciated.

 

I wouldn't underdrive anything unless my car was all out race car. The cooling system is taxed from the factory, the charging system is taxed (wiring) why would you want to decrease your capcity on systems that are taxed?

 

Underdriving the WP actually makes it work better at high rpm. Less turbulance..

 

problem is that you spend very little time at high rpm street racing.

 

It's going to be a race car. No insurance or anything. So what you think now?

 

you have my approval.

 

Alright, now. Lol, Unorthodox or RX7.com?

 

ebay 25 dollars... i've had greddy, ebay, and the rotor shaped ones from japan, the e bay ones are exactly the same as the greddy ones, and most of them come with belts.

 

I've got the Unorthodox main and power steering with the greddy alt and water pump. The combo works very well without the airpump.

 

I got the unorthodox ones from ebay the stickers in the box said BOMZ, they didn't come with a belt though.