And Lloyd, also please stop with your rants on the butterfly valves. It too can be fixed. Not one 4x4Wire person has ever taken me up on it, but I'm running my reworked plenum with butterfly valves without a care in the world.

I have paper plans for the bronze-aluminum alloy bushings that were made, micrometered to .00x inches. They were made by a guy who had the alloy barstock left over from making parts for the space shuttle fleet, and not the boosters, wise guys.

The butterfly valves are fastened to the shaft and are loc-tited in place. They won't be coming loose.

I offered to use my spare plenum to make another one for BottomFeeder, so he's got dibs on that one, to be done by May, as long as I can get more bushings made. As long as he turns in another plenum in exchange, I can have another one made and so on.

Since I have the dimensions for the bushings, anyone can have them made in any material they so desire. There are manufacturers on the internet who will fabricate based on your supplied plans and in many materials you may see fit to use. I'd thought of Delrin, for example, but I don't want to be the guy to try it.

So, if anybody's interested, let me know. It's a helluva lot cheaper than a new plenum from the dealer that just gets you back to stock and resets the clock to ticking, if you know what I mean. And anybody who says that the plenum in working order doesn't make a difference probably knows more than the engineers that put it in. And also, by the way, pulling the vacuum line on a still-assembled plenum reverts the valves to 'open' meaning the high speed (short) runners, and the valves are directly in the air stream, which would be most likely to make them vibrate and potentially fail. Removing them means most of the intake air is directed through the high speed (short) runners, but the longer, low-speed runners would still be open. Not sure how that affects things, but it's not how it was designed.

It can be made to last. I'm betting my engine on it, and so far it works.

John B.