guidance needed for for building 20

[battler]

I WISH TO BUILD A 20" VENTRI POWERED DREDGE, I PRESENTLY OWN A 5" MODEL, BUT I DO NOT KNOW HOW TO SCALE UP FROM 5" TO 20".<br><br>THE 5" IS POWERED BY A 8 HP PETROL ENGINE COUPLED TO A 350 GPH PUMP 3X4 MAXIMUM PRESSURE IS 100PSI. IT HAS 1 VENTRI OF 1.5". IT IS CAPABLE OF MOVING 4.5" ROCKS OK.<br><br>I NEED INFO ON 20" MODEL CAPLE OF MOVING 18" ROCKS, I WISH TO HAVE SOMETHING THAT WILL REALLY SUCK, WITH MAY BE UPTO 6 VENTRI JETS. ANY IDEAS ON SPECIFICATIONS?<br><br>MANY THANKS, BACK YARD BATTLER

 

contract ric wood at eviro services pump supller ind, in 317-844-0546