Hey guys, new to the forum and hoping some of you "who have seen it all" so to speak can offer your real world experience. This is going to be long so i apologize up front. 
i have a 1990 Ultra that has 1992 breather type rocker boxes on it. The front just doesnt like to stay sealed. (at dring and top, not base to cylinder. rear is fine. had them on marble, not warped. 3 sets of rubber gaskets, always leaks. tried copper spry, etc. i am finally going back to cork gaskets tonight.( pre 92 gaskets) i have pulled cam chest, checked breather gear and timing, oil lines free flowing, etc. i vent to atmosphere with a little filter on end under bike. free and clear flowing. my motor came back from MOCO couple years ago freshly rebuilt with 1992 breather type rockers on it (not sure why, previous owner claims) since my motor does not breathe out the top, should i just pull the umbrella valve out of the intake side? or add one to the exhaust side runninig both? oil must be pooling up in the box and then pressure pushing it out the weak link gasket. so all that and my real question is, since i need to keep these boxes for now due to funds, should i ditch the umbrella on intake side (only one in), add the other umbrella, drill out the holes larger to 1/8th to allow easier oil return, what can i do that i havent checked/done already? i thought it was excess pressure but now not soo sure since all seems to be working correctly. just frustrated.... Thanks
i have a 1990 Ultra that has 1992 breather type rocker boxes on it. The front just doesnt like to stay sealed. (at dring and top, not base to cylinder. rear is fine. had them on marble, not warped. 3 sets of rubber gaskets, always leaks. tried copper spry, etc. i am finally going back to cork gaskets tonight.( pre 92 gaskets) i have pulled cam chest, checked breather gear and timing, oil lines free flowing, etc. i vent to atmosphere with a little filter on end under bike. free and clear flowing. my motor came back from MOCO couple years ago freshly rebuilt with 1992 breather type rockers on it (not sure why, previous owner claims) since my motor does not breathe out the top, should i just pull the umbrella valve out of the intake side? or add one to the exhaust side runninig both? oil must be pooling up in the box and then pressure pushing it out the weak link gasket. so all that and my real question is, since i need to keep these boxes for now due to funds, should i ditch the umbrella on intake side (only one in), add the other umbrella, drill out the holes larger to 1/8th to allow easier oil return, what can i do that i havent checked/done already? i thought it was excess pressure but now not soo sure since all seems to be working correctly. just frustrated.... Thanks
