Yes, there is plenty of room above the bullet to create water inlets. If possible I'd like to see a proven way of doing it rather than just experimenting. I'm sure you're right about the low pressure and I'm just assuming that it is created by turbulence from the rear of the water inlet.

I think that I am going to grind a bit on the bottom front of the shorty to reduce the angle there and then create a fairly large curvature at the rear of the inlet and see what happens. I'm just guessing here though and need more feed-back from people who have dealt with this problem. Thank you for all of the replies so far. I appreciate that.

I had to go check mine... no signs of it. I run 80s w/twin shortys with six years on them.

Interesting. Thanks. I did a little reshaping of mine today but I don't have real high hopes that the problem is fixed.

Carl, is it possible you run a prop with a lot of stern lift and to get enough positive trim to carry the nose you need to trim it more than a prop with out so much stern lift, and in turn your drive angle is excessive causing the nose of the drive to be at such a downward angle it's causing the low pressure/Cav burn. I don't know what prop your using, I'm just trying to figure what would make your set up cause that, Whereas others don't seem to have it (that they know of )

Maybe next time after you run it, put it back on the trailer with the drive left in the position where you where running, then you'll get a good indication of how much postive trim you need and could get an idea of where you would need to massage to get good flow to that part of the lower unit..

I plan to talk with Brett about it. I'm running one of his 30p Bravo 1s. A lot of us are running Bravo 1s on the 22 Donzi Classics. The shorty has also been a proven improvement on these hulls but with the lesser leverage of the higher drive I do have to run quite a bit of positive trim to really air her out. When cruising in two footers on the big lakes the drive is probably level. I agree that the damage is probably happening when I am airing out for top speed of 83-86 mph. I like the idea of two inlets on either side just above the bullet but I will be going into unknown territory then. The inlet seems to be in an unusual location from the factory (on the bottom). This also sucks up debris in shallow water.

Sound to me like you need to raise the drive even higher so that you don't have to trim so high. Here are pictures of mine trimmed for max speed - second pic is neutral trim.( straight with bottom of boat)

carl,send it to wilson and have it blue printed....

I don't have $2,000 + shipping to and from Florida laying around right now. Obamanomics are not working for me. I did try to copy much of their work using pictures of one of their drives. I talked with them and it might not even be caused by the water in-let.

Tinkerer, I don't think that I'm running much more trim then that. I'll probably have to wait a couple weeks before the water is warm enough to jump in and take a look after a fast run.