My new manifold...

[rushin]

Here is my new manifold just laying in there. I was wondering about this location instead of parallel to the stringer? I would need to add another T for the 4th pump and a elbow to the intake line. And they are laying down with the output's up for air.

lee, chpthril, xpjim what do you think?

[rushin]

opps forgot pic

[lee]

That could work if you can make the pumps higher than the manifold so the air will flow out of the manifold and out of the pumps and not trapping air causing a air pocket.

[chpthril]

That could work if you can make the pumps higher than the manifold so the air will flow out of the manifold and out of the pumps and not trapping air causing a air pocket.

Food for thought: Tige places the manifold with the pumps above the manifold, but have had air lock problems If the manifold is higher then the transom inlet, then the air should purge out the top of the pump, if the manifold is lower then the inlet, the air should bubble out the thru-hull.

Just curious what it really is about the factory air lock since the pumps are already upright!

[xpjim1]

I am thinking it could also be caused by the checkvalve placement. I believe that was my issue. When I moved the check valves air lock issues went away in combination of adding the air relif in my manifold for the 4th pump I never added

[chpthril]

Here is my new manifold just laying in there. I was wondering about this location instead of parallel to the stringer? I would need to add another T for the 4th pump and a elbow to the intake line. And they are laying down with the output's up for air.

lee, chpthril, xpjim what do you think?

Manifold looks great. Hard to tell for sure from the pic, but it looks kinda tight for another "T" and a forth pump. If so, you could upgrade the bow sac pump to a 950gph and fill with only one pump. My bow sac fills almost as fast as the 400# sac with the same 800gph pumps. I believe the Fly High fills more in the Rz then a Ve, so upgrading to a higher output pump might equate to the same fill time as 2 500gph pump, does that make sense?

[chpthril]

I am thinking it could also be caused by the checkvalve placement. I believe that was my issue. When I moved the check valves air lock issues went away in combination of adding the air relief in my manifold for the 4th pump I never added

That makes sense as well, water sitting in top of the c/valve may be preventing the air to purge out. I'm only running one fill check valve, in the bow sac line, and really dont have any air lock problems. I do get air in the system, but only take a minute to purge out when I kick the pump(s) on.

[lee]

Food for thought: Tige places the manifold with the pumps above the manifold, but have had air lock problems If the manifold is higher then the transom inlet, then the air should purge out the top of the pump, if the manifold is lower then the inlet, the air should bubble out the thru-hull.

Just curious what it really is about the factory air lock since the pumps are already upright!

I did not say stand the pumps up straight like Tigé. I said make them higher than the manifold and if the hose barb is pointing up like in the above picture the air will find its way out of the chamber.

[lee]

Just cut the fat black hose a little shorter and run them parallel to the stringer.

[chpthril]

I did not say stand the pumps up straight like Tigé. I said make them higher than the manifold and if the hose barb is pointing up like in the above picture the air will find its way out of the chamber.

Sorry for the added confussion, I know you did't instruct Rushin to stand pumps straight up. Sorry for hijacking!

[bentone]

I am thinking it could also be caused by the checkvalve placement. I believe that was my issue. When I moved the check valves air lock issues went away in combination of adding the air relif in my manifold for the 4th pump I never added

where did you end up putting your check valves and are they really needed?

[bentone]

I have to put boat in reverse pull one of my front fills to get the air to purge out. Its been a real pain in the @ss. hope to fix the problem this winter. I was thinking maybe it was the fly hi bow sac that is collasped due to the vacuum of the drain pumps not letting the system purge the air out

[xpjim1]

I moved them closer to the bags and on the downside of the fill hoses. This way there is no water holding the swing shut and the air can pass through. No more reverse for me.

[rushin]

Just cut the fat black hose a little shorter and run them parallel to the stringer.

I tried fitting the manifold in there parallel and the water line coming off the v-drive seems to be a problem. The manifold sit's up against the elbow coming off the v-drive and the pumps still sit some what upright.

Do you route the ballast intake above or below the v-drive line?

I will move it around more and see what I come up with.