Two reasons for changing from the Belsales Supercharger Venturi to the Belsales Delrin Venturi.
1. In theory the Delrin is lighter and therefore less mass to move thus increasing rate of cycling.
2. The main reason. The ball detent was scoring the bolt.
The Standard and Venturi I have both started off clean, but after a short while showed evidence of scoring where it meets the detent.
This happened to the Supercharger bolt even after the ball detent was stripped and lubed before install.
The Delrin bolt has a short groove at the end that aliviates the problem.
The new Belsales Ally Bolt is now to get this groove as well.
The Evolution X has a wire ball detent as standard
1. In theory the Delrin is lighter and therefore less mass to move thus increasing rate of cycling.
2. The main reason. The ball detent was scoring the bolt.
The Standard and Venturi I have both started off clean, but after a short while showed evidence of scoring where it meets the detent.
This happened to the Supercharger bolt even after the ball detent was stripped and lubed before install.
The Delrin bolt has a short groove at the end that aliviates the problem.
The new Belsales Ally Bolt is now to get this groove as well.
The Evolution X has a wire ball detent as standard