improving water flow

[jcrigan]

Lately i have been barrel testing a couple old neptune outboards. They don’t pump water very well. I have tried raising the water level and removing the prop to help to no avail. Has any body ever rigged up an external pump on the water exit pipes to aid in cooling? It seems that the neptunes are bad for this.

[Tubs]

A "Boat House Repair" is one that done without having tools or the skills to do it properly.

• This reply was modified 6 years, 3 months ago by Tubs.
• This reply was modified 3 years, 11 months ago by Tubs.

[cajuncook1]

quote Tubs:

On motors that have tubing running from the pump to the
power head I have make and adapter to attach a hose to
run water though the cylinders in the direction the pump does.

Tubs, I would greatly enjoy seeing the modification you are discussing.

Cheers,

David T.

[jcrigan]

On the 15A6 motor it would be easy to remove the rubber hose and put a tee fitting there. On the others the copper tubing would have to be disconnected. Might have to start testing them outside the barrel.

[Tubs]

A "Boat House Repair" is one that done without having tools or the skills to do it properly.

• This reply was modified 6 years, 3 months ago by Tubs.
• This reply was modified 3 years, 11 months ago by Tubs.

[jcrigan]

I took an 8 inch piece of 1 inch copper tubing and cut it lengthwise. Heated it up to red hot and quenched with water. Then it was soft enough to form around the water intake. I’ll get a female hose fitting for this and silver brase that to the copper. Then make a gasket to fit. Strap it on with a bungie or what have you, and Viola! Now on to finish the project.

[Tubs]

A "Boat House Repair" is one that done without having tools or the skills to do it properly.

• This reply was modified 6 years, 3 months ago by Tubs.
• This reply was modified 3 years, 11 months ago by Tubs.

[jcrigan]

I have all those odds and ends. Hope to try this out today.

[cajuncook1]

quote John C:

I took an 8 inch piece of 1 inch copper tubing and cut it lengthwise. Heated it up to red hot and quenched with water. Then it was soft enough to form around the water intake. I’ll get a female hose fitting for this and silver brase that to the copper. Then make a gasket to fit. Strap it on with a bungie or what have you, and Viola! Now on to finish the project.

Tubs, thanks for showing me examples of your water tube adaptors!!! Pictures help a lot, because I’m primarily a visuals learner.

Cheers,

cajuncook1

[Mumbles]

quote Tubs:

Stuff that gets
guys like mumbles, Frank R., T-2, and
Richard White shaking their heads.

I don’t shake my head bro, I nod with amazement! ☺

[Author]

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