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View Full Version : Piggyback integrated bow sac -- any experience?


wheelerd
05-11-2013, 09:37 AM
I'm considering adding the piggyback integrated bow sac kit from Wakemakers to my 05 X2. www.wakemakers.com/mastercraft-piggyback-bow-ballast-system.html
Anyone here have experience with this? Logic tells me that filling the sac from the overflow of the KGB is not the most efficient way but I spoke with Bryan from Wakemakers and he assured me that this indeed was the best solution.

(I was thinking of Y-ing the hose at the KGB pump and running a separate line. He said they recommend this for the newer boats with the 1" hose but not those with the 3/4".)

Any thots?

73blue
05-11-2013, 11:11 AM
I didnt buy the kit, but I have done this in my 04 X-10. It works fine. As you said, its probably not the most efficient. For that you would install a new thru-hull, pump, switch, etc. But it works, which is the important part.

JRW160
05-11-2013, 12:06 PM
I have a 3 way ball valve that switches flow from the kgb to the bow sac. The previous owner had it in the bilge with access through the round hole. I moved it and mounted it behind the rear starboard seat.

I have 750s in the back and switched from the integrated bow sac to the open bow triangle. With the limited space up front under the seats, you might get 350-400lbs max with the integrated bow sac.

JRW160
05-12-2013, 12:46 AM
If you are going to run the integrated bow sac, make sure you run a Y on the line and have a line running to each leg of the sac. I only have one fill/drain hookup on mine and it was a hassle getting it to drain.

Here's a pic I took of the ball valve today. Pretty simple setup. Probably $30 for the valve and $20 or so for the extra hose.
https://lh5.googleusercontent.com/-p7f8FmgkL3E/UY7XvGiONwI/AAAAAAABXXQ/QWACLV_iHjM/s640/20130511_115643.jpg

wheelerd
05-12-2013, 01:22 AM
If you are going to run the integrated bow sac, make sure you run a Y on the line and have a line running to each leg of the sac. I only have one fill/drain hookup on mine and it was a hassle getting it to drain.

Thanks. Yes, the Wakemakers package for the sac has two two fill/drain hoses and two vent hsoes.

Grant777
05-12-2013, 03:43 AM
I run the integrated bow sack with just one in line from the KGB overflow and one outflow from the sack to the vent line. I did put the fill/drain line on the starboard side which seems to help the draining for some reason. Works like a charm.

Grant777
05-12-2013, 03:45 AM
Just don't forget to plug both the drain hole on the opposite side with a blank. I had a friend who tried to sink his boat this way.

wheelerd
05-12-2013, 10:30 AM
Thanks Grant777. Does your sac have the fill/vent holes on the top or the bottom? (I guess a person could flip the sac over to have it either way.):)

Grant777
05-12-2013, 10:40 AM
My sac has one fill hole on the top in the center of the bag, basically inline with the center of the boat it then has a drain hole on each end of the sac. If you need pictures I can send you some tomorrow.

Jerseydave
05-12-2013, 11:21 PM
http://www.mastercraft.com/teamtalk/showthread.php?t=54225

In the above thread, the first pic is my 750# sac piggy-backed off the KGB tank.
It fills thru the bottom fitting and drains that way also. No vent hose on it, I just use the air valve to allow excess air to escape and when water starts coming out it's full.
When I empty it, I watch the sac shrink until it's empty, then disconnect it from the KGB tank so there is no excess vacuum in the KGB that might cause damage to it. Simple set-up.

romerorrr@yahoo.com
05-16-2013, 01:06 AM
I just did it for my 2002 X-30 and it works surprisingly well even with 3/4. I also had removed the ballast manifold this summer and went with dedicated thru-hull fittings, green impellers and polished pump heads. The entire 400lb KGB and standard wakemakers IBS setup can fill in 8 minutes. Its also cool to know the IBS is full by just looking at the bow seat cushions lift up.

95064




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wheelerd
05-16-2013, 01:59 AM
Good info. I ordered the IBS from Wakemakers a couple of days ago (as well as 750 lb bags for the rear lockers and the green impellers.) Maybe next year the thru-hull ports will be on my to-do list.

JRW160
05-16-2013, 01:35 PM
Good info. I ordered the IBS from Wakemakers a couple of days ago (as well as 750 lb bags for the rear lockers and the green impellers.) Maybe next year the thru-hull ports will be on my to-do list.
They upgraded the ballast manifold at some point, but I can't remember when. With my 2003, filling the 750s, kgb, and ibs was a 20+ minute ordeal because the manifold only provided enough flow for one or two pumps to operate at a time. It only took half a season of that before I bit the bullet and installed dedicated thru hulls for each pump.

wheelerd
05-16-2013, 07:59 PM
Did you remove the old manifold altogether? Did you drill three new thru-hull holes or use the original manifold one? Also, 1" new hose rather than the old 3/4"?

JRW160
05-16-2013, 10:21 PM
Did you remove the old manifold altogether? Did you drill three new thru-hull holes or use the original manifold one? Also, 1" new hose rather than the old 3/4"?
I left the old manifold. I use it for the kgb. I just cut and plugged up the 2 extra hoses. This lets the kgb still drain out the sides of the boat.

The stock hose is 1" from the manifold to the pumps. I reused it and attached it to new 3/4" thru hulls on the bottom of the boat. It takes between 7 and 8 minutes to fill the 750s.

bjen
05-17-2013, 09:56 AM
Did you remove the old manifold altogether? Did you drill three new thru-hull holes or use the original manifold one? Also, 1" new hose rather than the old 3/4"?


When you install this, please let us know how it went with some pics, especially if you cut new thru-hulls.
It does take forever to fill anything with the stock set-up through the manifold so I have resorted to using tsunami pumps to fill bags in the lockers and the bow. Fast but not very convenient.

wheelerd
05-21-2013, 01:53 AM
I left the old manifold. I use it for the kgb. I just cut and plugged up the 2 extra hoses. This lets the kgb still drain out the sides of the boat.

The stock hose is 1" from the manifold to the pumps. I reused it and attached it to new 3/4" thru hulls on the bottom of the boat. It takes between 7 and 8 minutes to fill the 750s.

Did you use the OEM pumps?

JRW160
05-22-2013, 05:38 PM
Did you use the OEM pumps?
Yeah, I am using the oem pumps.