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Pump Questions
I have a 12jc and am building a 650hp and 675lbs apox.....and wondering what impeller to use to get 70+
This should keep you busy for a bit:
It may or may not help ?
http://www.performanceboats.com//showthread.php?t=6820
You forgot to mention at what rpm ? That might help a bit..
Sleeper CP
Big Inch Ford Lover
"Dark Sarcasm"
Going fast is only half the fun ... what you make go
fast is the other half.
" A Government big enough to give you everything you want is big enough to take away everything you have"
ty just what i was looking for......Originally Posted by Sleeper CP
This should keep you busy for a bit:
It may or may not help ?
http://www.performanceboats.com//showthread.php?t=6820
You forgot to mention at what rpm ? That might help a bit..
Sleeper CP
Big Inch Ford Lover
is this a running boat right now. and if so, how fast is it going and at what rpm?
nope but i am getting the pump built thats why i ask.....
Well, to start, with that HP, I would go A or AA cut, you are closing on 6,000RPM with an A Berk.
You can ALWAYS cut it smaller for very little $$$$.
Making it grow bigger, a bit harder.
Once you get a setup to work from, then the adjusting starts with the shoes, droops or snoots, nozzle bushings, rideplate angles, diverter, etc, etc. Seems endless, and the posibilities are I suppose.
What is the RPM you make 650HP at? VERY important.
An A is no good if you don't make that untill 7,000RPM, because you'll NEVER get there. A "D" cut maybe.
Guy on another board had a 502 dynoing 718HP @7-grand
Put a Berk A cut behind it, made 4,000RPM, MAX, due to the way the power development was.
My 350HP 454 spun same impeller 4,800RPM.
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The rest of us are being dragged along kicking and screaming.
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