I think the stock crank pully wieghs 4lbs. if I remember correctly.

 

how much does yours weigh?

I'd be interested if you would make them for us!

 

I'm sure if the price is right, and the weight difference is enough. A couple of people would be interestd in getting some.

 

JSpeed's UDP is about 3-400g I think. The weight difference is enormous. His sould be under 6-700g

 

yep, his won't be as light as an aftermarket pully as his is larger in diameter. This will hardly make a difference though as you only get a couple of horses for a pully.

 

well stock one is about 9lbs and his will be less than 2lbs.... i think it will make some difference!

 

No, I mean there won't be a large difference between the pully that he made and an aftermarket one. 9lbs?? When I weighed mine, it was 4lbs. and his should hardly be even half a pound.

 

ohh i see. I confused lbs with kgs, yeah its about 4lbs and if it was 4kgs it would be around 9lbs!

 

The performance difference between an aftermarket and his are close to nothing. However, it does not give any hp or torque. It simply allows more of what you already poduce to get to the wheels. Like a alu flywheel.

 

Really, I read somewhere a few yeas back where someone dynoed their car and posted that they had recieved 1 to 2hp from it.