rc2007

I have a chinese made v hull with an ASP .11 that is mounted about the middle of the boat.

I'm trying to break in the engine by holding it in a small tub of water. Even with the prop spinning, there was zero water circulating to the head of the engine.

There is an aluminum tube behind the prop, and a long tube connected to that goes to a nipple on the head of the engine.

What does it take to get the w3ater to circulate?

gofast53

You will need to have the boat moving in the water which will in turn force water up the pickup pipe. I would not run the engine for too long without any water circulating through it otherwise you will cause severe damage.
As mentioned in other posts, an alternative during break-in is to connect a tube to the inlet nipple on the engine head and then attach the other end to a suspended inverted plastic bottle full with water (just don't run the engine at full throttle!). Though ideally break-in should be done with the boat moving through the water.

rc2007

Thanks a TON......I'll be taking it to a lake tomorrow for the maiden.

miss vegas

i recommend that you always run the boat in water for the break in process. if you take the engine out you are not really accomplishing anything because there will be no real world effects like drag which will really make a difference in the performance of the engine. make sure you have a safe way to retrieve you boat in case of a stall or flip.

rc2007

Well , took it to the lake and I could only get 30 second runs u ntil it over heated. Again, water was not passing through the cooling tube even with the boat in motion.

You can manually blow water all the way throught the system, no prob.

`I know this is a cheapy boat, but the water pickup system is the same as other boats.

I will post some pics of this boat.

curtis118118

the water colling may be at the rong angle try pointing it 90degreese with the opening faceing foward 2 the boat if tht dont work lear it more towards the boat (may cause a bita drag)

rc2007

The tubing size in and out of the cooling head is Small, like for 1/2A planes...should i upgrade to a Medium size fuel line?

piper_chuck

My Feedback: (12)

I've got two ideas here. First, you might have the engine set too lean, this is a very common cause of over heating. Second, it looks like the angled cut at the bottom of the water pickup is nearly parallel to the flow. Try bending the tube so it's closer to the prop. This might let the tube get a better bite and pickup more water. I think this is what Curtis was saying.

rc2007

Hi, was not running lean......had it rich for breakin.

Would a steeper angle cut also help? The angle seems to be slight.