SoCal Jet Boats
Tech Talk => Jet Pumps => Topic started by: diesel_lv on December 14, 2013, 09:44:39 AM
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I posted on the engine tech about the turbo I am putting on my engine. Here is a link to what this combo will produce in a 2Valve engine. I am using an all aluminum 4 valve engine with much more flow capabilities. http://www.hotrod.com/techarticles/engine/hrdp_1105_592hp_46l_2v_motor_for_2298/ (http://www.hotrod.com/techarticles/engine/hrdp_1105_592hp_46l_2v_motor_for_2298/) . It will be making at or more than 500 lb/ft of torque from 3500 rpm depending on how much boost I run . With this torque, should I be using an "A" or "AA". This will not be a racer, I just want to be able to cruise up or down river at 45/50ish and keep the rpms reasonable. I will also be doing a pump setback, getting the inspection hole outside the hull. PITA dragging the back of the boat up on shore so I can get all the grass sucked in at Pirate Cove out of the pump.
Any help would be greatly appreciated.
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I'd go AA and trim it down as needed.
There are tricks to getting weeds out or through your pump....
-beerjet-
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I'd like to know those tricks. Weeds got so bad that from boat launch at Pirate Cove to gas station, I had to jump in water and pull boat to shore. Pump so full that it had Zero maneuverability. As for the pump, I'm going to be running 340hp at 3600rpm and 500hp from 5200-5800rpm at 6lbs of boost. Next winter upgrading bottom end of engine to handle more, 430hp at 3600rpm and 600+hp from 4800-6000rpm at 14lbs boost.
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I'd like to know those tricks. Weeds got so bad that from boat launch at Pirate Cove to gas station, I had to jump in water and pull boat to shore. Pump so full that it had Zero maneuverability. As for the pump, I'm going to be running 340hp at 3600rpm and 500hp from 5200-5800rpm at 6lbs of boost. Next winter upgrading bottom end of engine to handle more, 430hp at 3600rpm and 600+hp from 4800-6000rpm at 14lbs boost.
Depends on what you want to achieve here. If it's just a river curser I would stick with an A. You'll have a great hole shot and it will pull hard but you won't make it up there in the peek RPMs. If it's speed your after you'll want to match the impeller to the Peek RPM. I would try a B or b/c
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Watching your temp gage, bring the rpm's up and down while pulling the reverse bucket up and down.
Supposed to build up pressure in the pump and force it back out.
I've kept it at low rpm's and let it work the weeds through.
WATCHING THE TEMP GAGE THE ENTIRE TIME!
It's worked for me once.
-beerjet-
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With that little rpm and torque and being a river cruiser good all summer pleasure boat pulling skiers .. Best bet with out a inducer is a. 'A-b '
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