Hi, I have a 84 valco 21 ft with a ford 302 and a 750 series 2 stage hamilton jet. I'm getting slippage that feels like a car clutch slipping and has no acceleration.
Supposed to have a cruse rpms around 3000-3200rpms but will do around 8 mph at those r's and will maybe do 30 mph around 4000-4200 rpm. It feels like hitting the gas in a car with it in park like it's not under any load. I have never been in any other jet boat and bought this as it is a year ago so I have no real comperison as far as speed and acceleration. Checked staters/ impellers and everything looks good, no gap, nicks or wear in the impellers of the stators, no blockages.
Does 30 mph sound right? I seen a forum where a guy had a berkley and air was leaking into it, could this be my problem? I appreciate any info, I'll say thanks ahead of time