Houston we have a problem.
 

I just made a hole thru my transom (water pick up for AC) and the thru hull fitting is the same length (2 1/2) as the transom is thick.
I`ve looked but can`t find a thru hull fitting with a pipe thread thats longer that :poopoo:

The thru hull is too short and need screw right into the valve


http://33outlaw.zenfolio.com/img/s2/...77359252-3.jpg



EDIT:

I think this should do it:


http://www.ebay.com/itm/160793900438...#ht_540wt_1111

If you put the thru hull through the transom you won't be able to get water while on plane (maybe you only need it while your on anchor or at the dock?).

going to need to to put a bleed valve on the water line inside where you can get to it easily, as you are going to have to bleed it everytime after running the boat..

I used a scoop type pick up on the bottom to keep it primed. The previous straight fitting would loose its prime after running fast.

Why not get a stainless through-transom pickup that is adjustable, and will pick up at speed too? Check out the offerings from CP, Eddie Marine or Teague. Ive spent money at them all...

Read his type of boat in his signature... no gen... will only run on shore power at the dock...

As long as his pump is higher than his intake he will be fine.

Not necessarily.

Those pumps aren't usually self-priming.



MC

. Occasionally mine will get air locked from having it up on the lift. A few minutes of driving it around to burp the air out and it works fine..

Exactly! My pump is located below the water line and it still will not self prime after it has been on the lift. Installing the scoop pick up automatically primes the system. The thru hull in the transom is going to be a constant pain.

I speak from experience... but then again.. what do I know... I generally plumb from the bottom.

:party-smiley-004:

I'm glad you haven't had to fight a priming problem on your installation.

If your pump is below waterline at rest, then you are right.
If your pump is not below waterline at rest, then the pump will be required to prime itself (which most AC pumps are quiet, nonpriming, vane pumps).

With a thru transom pickup, it will need to be mounted low enough on the transom that it doesn't suck air from the surface (like a drain eddy), but that generally means the pickup will be lower than the pump - so the next issue is making sure that your pump is lower than the waterline as well.

AC pumps don't like to run submerged, so the tendency is to mount them high enough in the bilge that water won't ever get to them - just make sure it's still lower than the waterline.

As mentioned before, all of my installations have been through the bottom of the hull along with the pump being below the water line. That is the best way in my opinion. However, I have had a couple friends that couldn't justify drilling a hole in the bottom of the hull so they mounted it in the transom. Both occasions they mounted the pump below the water line so all was good. Any good marine A/C manufacturer should give detailed instructions detailing the obvious when it comes to this... should...

I`m about a foot above drain plug with the pickup , everything else I`m keeping below the water line, if prime is a problem I`ll do a T after pump.
My only concern is the strainer, I wanna keep it accessible and serviceable so in the up position. The AC manufacturer dude says point it down..
Only time I need ac is at dock. I guess I could also just shut the valve of anytime I`m not running the ac to keep prime..

put it on there, run the boat, then try the A/C see if don't have to bleed the air out..will be airlocked...have a marine a/c business...done many installs....