Harley /V-Twin mechanics RevTech engine question?

Question

I've got a 100" RevTech with a chronic air leak. Changed intake seals numerous times,new flanges and finally new manifold. It will seal up for a day or two and then begin to leak again. Is there some unusual cause of air leaks on these things? The typical fixes are'nt doing it.............PLEASE DONT TELL ME HOW TO DIAGNOSE AN AIR LEAK, THIS I KNOW>

Thanks ,but neither of these are answers to my ?.

Answer 1

Check the cyl head intakes with a straight edge - might not be machined properly.
The intake seals might be made of inferior quality - try sealing the manifolds with liquid gasket. Not permetex garbage. "ThreeBond 1104" is quality.
http://www.powersportsrider.com/CGI-BIN/HOME
Go to - Street - Index - Sealant
I'm not a Harley mechanic and I don't claim to be. Just giving you some suggestions.

Answer 2

It sounds off mainly because RevTach makes such a qualitly product (I've never had a problem with the numerous RevTech's I've wrenched on), so I have to say the problem is with some inferior seal, but you have changed those a lot already.
I would do what the previous answerer suggested and try checking the jugs with a straight-edge to see if they were machined right. I personally don't like liquid-gasket stuff- it can leak down into the engine and then you have a HUGE mess.
It's a long shot, but double-check your piston rings so see if they seated properly. If the oil control or scaper ring didn't seat right, that could cause a lose of compression.
Also, double-check your valve seats and see if there was machined properly (also you valve margins) and see if they seat right.