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i just put a alu. vortex 13*19 om my 1970 115 omc if i tilt all down on cmc and step on it out hole sound,s like spun hub ,but this is new prop i pulled it look,s good . i have center of prop shaft 3.1/2 below pad cmc moves moter back 6 in, it pulls good .if stay on it just get,s on the red line ,i just watch it . hope to own a flats 4 soon ,but if i have lower unit problim need to look at that . h2o psi good ,unless i tilt wayyyy up ,only do that to wet the wife on doc:Banane20: that,s one of those moment,s that a gooood hole shot is down right needful !!!
thanx
thanx