No spring in my RAVE valve!

[Sandman251]

Sorry for the exclamation point. I love drama. So I was poking around my new (to me) 01' Sportster LE 951C. I popped the RAVE caps to check them over and found no spring in one of them. Both are clean and have fluid motion. What are the consequences of a missing spring? How might it manifest itself in terms of performance? Also, I'll look, but does anybody have a part# handy for a RAVE spring and maybe a source?

 

[Sandman251]

I got to thinking. I wonder how much pressure it takes to move a rave valve with no spring on it. I mean, is it conceivable that a freely moving rave valve with no spring might even affect compression?

 

[Dr Honda]

Without the spring... it's basically opening at idle. There's not going to be any damage... but you will lose torque. I guess, and low-is throttle settings, you will put a little extra pressure on the crank, since the pistons will be making power at different levels... but that's probably not enough to cause an issue.

Anyway... put a spring in it, and don't worry.

 

[Sloanman7]

I have a spring I can send you