SoCal Jet Boats
Discussion => The No Wake Zone => WarZone => Topic started by: aquaholic72 on December 12, 2014, 07:11:37 AM
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So I'm makin sum top end changes to my flatty this winter, I have new heads and a tunnel ram, it's a Holley pro dominator tram.. The carbs sit sideways,, holley 1850's, i may be overthinkin this but I think I should turn the carbs around, so they sit bowl to bowl, I think they will function better that way! If I'm wrong please let me know!
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Sideways, you won't have to remove the carbs change jets. Sideways seems to work pretty good on circle boats and drag cars/boats. Sideways has more complex linkage though. Otherwise, I think it is your personal preference.
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So I'm makin sum top end changes to my flatty this winter, I have new heads and a tunnel ram, it's a Holley pro dominator tram.. The carbs sit sideways,, holley 1850's, i may be overthinkin this but I think I should turn the carbs around, so they sit bowl to bowl, I think they will function better that way! If I'm wrong please let me know!
The carburetors have absolutely no idea what way they are installed.
They won't always fit front to back.
GT
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Thanks,, I will leave them the way they are
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If you have center-hung float bowls, you might consider wedged floats. I ran these on road race cars as did the guy that turned me onto them, in addition to running them various classes of drag cars including his personal Pro Stock car. The concept is that the float is beveled so that when the fuel sloshes to one side of the bowl or the other (in a road racing application) from G-forces, the fuel doesn’t push the float up acting like the bowl is full allowing fuel to continue to flow through the needle and seat.
In a sideways carb TR application, the fuel will slosh towards the rear of the (boat) bowl on launch; matter at rest tends to stay at rest until acted upon by an outside force. The fuel stacked up against the side of the bowl tricks the needle and seat into thinking that the fuel level is actually higher than it is by pushing up on the edge of the float. This could possibly starve the jets of fuel because the float level will be higher with less fuel in the bowl compared to if the whole carb was at rest.
You actually have a similar situation on forward facing carbs, hence the use of jet extensions in the rear metering block and vent extensions (often called a "whistle") typically in the front metering block but could also be used in the rear to prevent fuel dumping out of the bowl vent under hard deceleration. I don’t typically use a whistle on the rear because when the fuel sloshes back in the bowl, it covers the end of the whistle which prevents proper function of the bowl vent. On sideways mounted carbs, you could use bowl vent extensions on both metering blocks, but do not use jet extensions.
Can't wait to see it.
Cheers,
Joe
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Somebody on here was selling a tunnel ram for a 455 olds with carbs let me know I want it. 74 kona
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