fuel pressure guestion
Well I've went back a few months and read all the other post about preasure problems but didn't find any quite like mine so I'm gonna have to ask for some help here. I have a BG 280 and bg regulater 10an from tank to pump 8an to front filter then 8an from filter to regulater then 2 8an lines to 950 Holly hp. on 434 675 H/P, now my regulater is mounted side ways not straight up and down if that makes a difference I don't know. but when I adjust my preasure with motor running @ 7.5 # it drops down to 4# at 4000 rpm I have to set it at 12# at idle for it to drop to 6# @ 4000 rpm. it has new 280 BG pump and new gadge it was doing that last week so I bought a new pump and it did not change still the same. if you set it at 7.5 # at idle should it stay there through 7500 rpm's or is is supossed to drop some. I don't know of these things. I do know its never flooded the carbs and it does not run lean through the 1/8 at 6.10 & 112mph I pull the plugs and it still looks rich. any thoughts would be thankful.
Andy Byrd