[67Lemons]

Originally Posted by Jay S

The Crane version has a bunch of assymetric’s in the design, and shuts the valves a lot more gentle. The way it is ground it should have the broadest power band of those grinds.

The others are more symmetrical designs. Opening and closing ramps are the same.

Wondering out loud here but could Bullet or any custom cam grinder ground those same characteristics in one of their cams or is it in the lobe that Crane used?

[Jay S]

Originally Posted by 67Lemons

Wondering out loud here but could Bullet or any custom cam grinder ground those same characteristics in one of their cams or is it in the lobe that Crane used?

Compcams might have the master for it someplace.

It would take some effort to copy it, probably more effort than most cam grinders would be interested in.

There are also a few old grinds that a core does not exist anymore either. The Crane 041 is odd enough that could be an issue too. Wolverine had a pretty renowned flat tappet cam a little bigger than the RA4 grind that people have wanted to copy but as I recall John Partridge at Bullet said there is not a core available to replicate it.