SoCal Jet Boats
Tech Talk => Jet Pumps => Topic started by: SnoProCT on May 18, 2014, 01:43:05 PM
-
I am hoping someone can help me with my pump setup (Total Newbie!). I am putting together my first jet boat, It has a Berkley Jet pump labeled 2J A. It is in an 86 Daytona Sprint, already has Place Diverter with Droop. On the bottom of the droop are bolt holes for what I am guessing is a ride plate? The locals are telling me that boat won't ever run without a shoe and a rideplate, but they guy I got it from is saying it ran tough as nails the way it is. I believe him seeing that he didn't short on anything when it came to his motor build and all the accessories. My question is should I take interest in setting up the pump differently, or keep it the way it is considering someone already took the time to engineer it that way. Another thing is I am running less HP than he was for sure so should I plan on impeller change? whats the best way to calibrate a new impeller? Thanks for any input.
-
That looks like a newer Dominator bowl to me. If that is in fact a Dominator bowl, you are stoked! You will need to pull the droop to grease the bowl bushings (or to see if it is water lubed), please post a picture of the outlet vanes of the pump bowl, it might already be done up nice. It would be worth it for you to pull the bowl to see what impeller you have and just do an overall inspection of the pump while the engine is out.
Yes, that Place Diverter & Controls droop is intended to work with a bolt-on ride plate.
http://www.placediverter.com/proddetail.php?prod=place_diverter_droop_snoot (http://www.placediverter.com/proddetail.php?prod=place_diverter_droop_snoot)
The bolt-on ride plate will not give you the same performance or tunability as a shoe/ride plate. Be advised that in order to install a shoe and ride plate, you will need to pull & reset your intake. Not a small task just before the season starts in a new (to you) boat. Being that you already have trim plates installed, I am not sure how much a real ride plate will help you, but the tenability of a shoe will definitely benefit you.
My suggestion, get it wet and see what it does. A different engine with different horsepower will affect how the boat handles. If you have an opportunity to dyno your engine, use the uncorrected (observed) horsepower to help select an impeller cut.
Cheers,
Joe