Ok so I've heard different things somebody said that JC bowls flow better than JG bowls but the reason why people don't want to do work on JC bowls is because you cannot do a droop or wedges and things like that to is JC the my boat rides well with my JC I just wanted detailed to go faster. What bowls flow better?
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OK, here is the full skinny... I am fully prepared to have this information challenged, so don't be afraid LOL...
A JC standard unworked bowl does not flow "better" than an equally unworked, stock JG bowl. Period, end of story, never been proven.
What the consensus seems to be is, the JC bowl, with the longer vanes, can (Not does) straighten the water more effectively than a G. All that said, it basically means that the outlet water has the potential to have lest twist on the JC than the JG. Never been proven, can't find a shred of documentation.
Add to this, the JC bowl has no "transition" from the bowl to the neck down area, whereas a JG has a gasket, a flange and the nozzle adapter.
Most early Droop Snoots had a flat divider plate cast into them, this plate would straighten the water even more than a JC bowl ever could, but was believed to limit flow because of it's cumbersome shape. I still Call BS to this day, but will say maybe in some conditions.
If you really want a bowl that flows, upgrade to an American Turbine... That being said, it's not cost effective.
You could clean up either bowl and "might" notice an Ass-O-Nometer difference, but I doubt it, when you get to the bowl detailing portion of the game, the differences are tenths of a MPH. The biggest gains on a pump as far as performance are, in order of importance; Loading, if you can't get the water in, you're not getting the water out, a quality loader properly set up and a stuffer to help reduce outlet cavitation is a must..., Trim, if you cannot adjust how the hull rides in the water, the hull will never realize peak performance., Matching the impeller to engine HP, (this probably should have been first, but let's just assume you were already close).
There are several other things that determine the performance of a jet, but you said pump.... So there you go.
The next time someone says a JC outflows a JG, ask them to prove it. We have tested so many combinations over the years (granted 15+years ago) that I can tell you that what you think works, probably does not.
If and when you get a bowl detailed, spend 90% of your efforts on the outer interior surfaces, the center section is less important, I see guys spending hours getting them all purdy and stuff, but there is very little velocity in the inner areas of the bowl.
Post up some details of your current set up and I will see if there is something obvious.
GT
