mx5cartalk.com

anyone run a underdrive pulley on here?

i have just a few questions,

1. do the na8 pulleys fit the nb8a?

2. what belt do you run?

3. do you run this belt with or without the a/c compressor

any info will be apprieciated

Unless you are building a short fuse motor or the crank has been tri-state balanced personally I would steer clear of them. They lack dampening and cause excessive wear on the main journals (esp for a big noise motor). I think you'd be better underdriving your accessories.

Sorry, didn't actually answer your questions

There is no point running an underdrive pulley on a 5. I doubt it would give you any increase in power (what is 'power' in a 5?).

Old Fart wrote:Hi I investigated these pulleys. Beware, as UNORTODOX Racing 'see web site' stopped making them for MX5's and there must be a reason. There are some advertised on EBay and he used Unortodox's name in some ad's but ceased to do so.
Steve

i was actually considering IndigoSpeed (http://www.indigospeed.com/GTPullies.html) which kinda look like they are the accessory pullys, either way i will investigate further.