Tsunami 800 pump upgrade project

[KY Steve]

Has anyone done this in a 24?

I have all the goodies but after looking at the space it looks tight for the 3 pumps, manifold and ball valve.

[ScottnAz]

I, too, doubted the fitment in my 22 and contemplated ditching the ball valve to conserve space, however, was able to get it all in there.

Mock-up the manifold and pumps and get creative about the space. It looks like Fmans' is running towards the rear of the boat? I've got my manifold running towards the front of the boat at a ~20 degree angle towards the port side, with one pump straight up, one pump at a ~45 degree angle, and the last pump flat coming out of the manifold end. I did have to cut down the height of the thru-hull so the manifold would sit tighter to the bottom of the boat. It's pretty tight, but just fit. I'll take some pictures next time I uncover the boat.

Like I said, I thought about losing the ball valve and running one of the manifold T's straight off the thru-hull, then having one pump lay horizontal towards the transom, and the other two pumps towards the bow with one vertical and one horizontal. But, alas, I thought it would be best to keep the valve just in case.

[Matt Laird]

Hey Scott, great job. I did the same with the drain pumps, except I have mine off the back of them and it works great, I can get about 95% of the water out of the bags. Getting them out of the heated engine compartment is a great idea, and if one takes a dump they are very easy to replace this way.

Heres a couple pics of the rear drains and the flexible upgraded line I really like.

When did you decide to swap out the drain pumps? I have all the parts for this mod just wondering if I should plan on swapping out all 6 pumps...

[ScottnAz]

As long as your drain pumps are working fine, I wouldn't bother swapping them out at this point. What I did do, however, is re-locate them so they are directly connected to the bag. My rear drain pumps would not work consistently, and in speaking with Jason @ wakemakers, it was suggested to relocate them. This will help remove the possibility of an air gap forming in the hose from the bag to the pump, and make them more reliable. Wakemakers made up the new direct connections for me. They are @ the very bottom left of this picture. I didn't need one for my center sac because it was already done.

[jasonwm]

If you're having problems with your drain pumps working reliably then relocating them will solve that problem (especially for the left rear bag).

If your drain pumps are working at all then you need to replace them.

[LloydP]

Hey Jason, by relocating the rear drain pumps, do you mean screwing them directly to the bag, as I have seen you suggest before?

Thanks.

[KY Steve]

Used my new system this weekend and it worked great with one pump running, but when I turned on a second it really decreased the water flow. Wondering if its the valve on the intake not allowing enough water in?

Hey Jason, any chance of getting a group buy discount for us Supra owners on the 1100lb sac?

[Matt Laird]

Thanks for the help guys, Jason i'll be waiting on the UPS man...

[Fman]

Used my new system this weekend and it worked great with one pump running, but when I turned on a second it really decreased the water flow. Wondering if its the valve on the intake not allowing enough water in?

Hey Jason, any chance of getting a group buy discount for us Supra owners on the 1100lb sac?

Steve,

If I am not mistaken you should be able to get about 40 GPM out of a 3/4" intake, so it should not slow down too much when all three pumps are running.

However, the 800's are rated for 13.4 GPM but after all the friction loss and going through the vented loops, I am only getting about 10 GPM into the bags. I will say after two seasons without the sprinkler valves it has been working awesome, reliable and simple.

[ScottnAz]

I must say, I've been very pleased with the upgrade in the 3 months I've been using it. I haven't measured/calculated the GPM, but it is much better than the sprinkler valves, and that's good enough in my book. If I were to do it over, I probably would have added a 2nd thru-hull and separated the rears from center pump, and gone with the 1200's vs. the 8's, although I haven't done the calculations to make sure it would be much more efficient.

Only problem I've been experiencing is surging with my center pump. There are times it won't pump a solid stream of water, it more or less spits and surges. The bag eventually fills, but I need to find the time to look in to the problem.