Question about a tell tale

[evinrude bayliner]

I Just installed a tell tale on my outboard. I am curious to know how much water should come out of the outlet. I dont want to divert too much water from the water jacket. I installed a 5/16 hose barb to the top of the engine block and routed the hose out of the bottom of the lower cowling with another 5/16 hose barb as the water outlet. Should I reduce this size outlet? It looks like to much water is coming out of the tell tale than there should be.

 

[HighTrim]

Re: Question about a tell tale

5/16 ID hose is fine. You want a strong steady stream out of the tell tale. This link from the FAQ should help answer any other questions.

http://forums.iboats.com/showthread.php?t=222677

 

[emdsapmgr]

Re: Question about a tell tale

What year and hp engine? It depends on the engine. Some engines just direct the hose out the cowling, as you are doing. A 5/16 hose is fairly large. Most outboards have some restricting orfice (indicator nipple) in the cowling that the telltale hose connects to. It only lets out a specific amount of water volume. The concern is that too much water exits (bleeds off through) the telltale and that the block does not fill fully with water to cool the top cylinder. You have plumbed it to the top of the engine, which is good. You should route the telltale hose upward so that it extends above the top of the top cylinder, then bends down to the cowling. This helps insure the block fills before water bleeds off through the telltale.

 

[evinrude bayliner]

Re: Question about a tell tale

The engine is a 76 model starflight 85 hp v4. I tapped into the round boss on the side of the engine block. I used the instructions on this site to install the tell tale. I did not order the nipple to to install on the lower cowling however since it would not reach me in time for my boating trip tommorow. I may have to go to the hardware store and look for another fittng to reduce the outlet flow.

 

[Silvertip]

Re: Question about a tell tale

Use a piece of smaller diameter copper or plastic tube and slide it inside the hose. You don't need a new fitting. Anything that reduces the diameter will add restriction. Add a spring clamp if the fit is not real tight.