[Jeff Higgins]

jcge, I'll ask Bernie about some 935 boost compensating system photos next time I see him. I don't know the driver (Woody) at all, but Bernie and I were having a little "question and answer" session behind his white "BP" 935 one day at a SOVREN race. Bernie was explaining that particular system to me. He spends a lot of time with that car, so I'm sure getting some photos wouldn't be a big deal.

I pulled the nose piece with the low speed screw off of both of my spare pumps last night. Sure enough, the black and white screws shown above were right there. What is notable is that they were very clearly screwed in to different depths on the two pumps. Being a rather anal half German myslef, I'm pretty sure that's not just sloppy assembly. They are setting a baseline cam position or something with them. Take that big snap ring off in the above photo and the carrier with those five screws comes out, followed by what looks much like a double valve spring accompanied by a smaller inner spring on which the low speed screw bears. I'll play around with them some more and see if I can figure out what is going on with them. Or I'll just stick one in my pocket and head to Bernie's...