Jayl13

Yes I have the fuel pressure gauges in the dash for each engine.
Okay good information to know. These are all the dumb little things I need to learn for the baja never had any of this stuff so its all new, Gotta go to offshore school!

WesSmith

For what its worth, I run mine all the time.

RHC

Me also,,, the min I put her up on plane,, I reach down and turn on the pumps

RHC

RHC

nope Jay,,, ya gots to go to Apache School

RHC

Jayl13

Learn me RHC!
I think I am going to bring her over to the hose on saturday, fire both engines up and have them running first, then take her to the ramp and dump her in. Should be interesting to say the least.
This is going to be freakin AWESOME!
Have to take the video camera with me on this trip, get some video and some still shots of her running.
I hope she is LOUD!
So what trim angle do you guys typically run at? You all start off trimmed all the way in and tabs all the way down? (baja needed that, could not trim the drives on the baja, or boat would porpoise all over the place and do the baja hop on me)

J

Chris Sunkin

Always run the electrics. Fuel pressure regulators are for making sure you aren't overloading the needles in your carbs. You should have adjustable regulators at each carb or on dual setups, one feeding the fuel distribution rail. Your fuel pressure gauges should tap in after the regulators and directly into these manifolds. If your setup isn't like this, you'll likely have trouble up to (and most likely) motor-cooking fuel starvation. Your electrics are vane pumps- they should be gone thru each winter when you lay up. The vanes can gunk up when they sit. The rebuild kits are cheap compared to smoked motors.

On the front tank, you need to feel how the boat runs in the water you have on that particular day. With a full cabin boat, you shouldn't need fuel up there to do anything to affect your ride. I rarely put fuel up front unless I'm going way far and don't know the fuel situation at my destination.

Jayl13

Chris, have half cabin not full, But I also have staggered engines so more weight further forward in the back.
So which fuel gauge is for the front tank and which one is for the rear tank?
Typical Apache dash, port and starboard, so which one is which on here?
J

Chris Sunkin

Depending on what's up there, the half-cabins usually weigh about 80% of the full. You can see 1,000 lbs difference between identical Apaches so it's impossible to guess. The short-stagger won't make that much balance difference. 10 lbs on the bow is about equal to 200 in the engine compartment, balance wise. The further back, the less difference it makes. In fact, side-by sides have more mass further rearward from the center of gravity so as far as carrying the bow, you'd have an advantage there. In truth, it will make virtually zero difference to the average pleasure boater. If you put a pair of 1,600's and dry 6's in it, then get an experienced race pilot at the helm, he'll notice. Otherwise, I wouldn't worry about it.

My gauges- left= front, right= rear. Dash redone when I got it so it may not be stock. i don't remember about the first one I had "back when"- way too much "under the bridge" in all these years.

Panther

Same here.

I also use them on start-up to make sure fuel is in the bowls.

Comanche3Six

I just came back to this thread and I would like to add a little something. I set my fuel pressure at 7 psi at idle with the mechanical pumps only. I believe that is a max number for Holley carburetors or you wiil blow the float needle off the seats. Whether you set it with mechanical only or both mechanical and electric, don't exceed 7 psi at idle. And don't let that bad boy go below 5 psi under boost!
Have fun,
Ed