[LBI-Waterman]

Hey fellas

Is it possible to get a high temp warning light and or buzzer to go along with your temp gauge? I like to scout out skinny water and some times i'll suck up weeds/mud, usually it's ok but once or twice she got pretty hot and i'd like to install something to alert me. I don't keep an eye on the gauge at all times


Thanks in advance

 

[SeaSparks]

I know Dunk knows this one, but I can't think of the name.

They make a add on kit that has a sensor that goes on the engine head, incase you can't install a sending unit on your motor.

What motor do you have??

 

[LBI-Waterman]

I know Dunk knows this one, but I can't think of the name.

They make a add on kit that has a sensor that goes on the engine head, incase you can't install a sending unit on your motor.

What motor do you have??

Hey SS
Yeah I have the sensor bolted to the head, I goes to my gauge, I want to add a buzzer and or an idiot light. 1987 225hp evinrude looper

 

[Dunk]

The engine should have a horn that goes off at 195-205. To test it just ground the wires coming off the senors on the tops of each head. Make sure the key is in the on position. The wires have rubber boots on them with tab so you can pull the rubber back and expose the connection. Just touch it to the block and horn should go off. If you are not getting a horn either the sensors or the horn is bad. The horn is either in the throttle control box or under the dash in the engine wiring loom.

 

[LBI-Waterman]

Thanks dunk...

I don't have any of those horns. I am not using the original controls, more specifically I have stripped down this motor and rebuilt her, she is bare bones and I have a binnacle control with no horns/buzzers.
I bolted a temp sending unit on the head to a gauge. I want to install an aftermarket buzzer/idiot light.........

Thanks

 

[Dunk]

If you have binnacle control then the horn will be in the harness going to the key switch. If its missing then the slide on connectors should still be there. Get a new horn from a Bomb dealer.

I'm sure if you go to NAPA they will have something, but using the already onboard system will be simpler and cheaper.

 

[Vitalsigns]

Isn't it better to have a flow sensor?

 

[stuart2150]

yes it is better to have a flow sensor

 

[Dunk]

Isn't it better to have a flow sensor?

A flow sensor?? For water flow?? Do you have link to one that would work on an outboard engine. I've never heard of one or are you guys thinking about a water pressure gauge??

Personally I like a temp gauge, water pressure gauge and all the noisy alarms outboards have..

Alum engines do not do well when they are cooked/overheated.... You get to 240-250 degrees all kinds of things start warping. That's not good... That's why factory alarms go off at 195-205 degrees.. Gives you some time to shut that engine down, but know even a bag around a lower unit your engine can go from 200 when the alarm goes off to 300 degrees in 15 seconds if you keep the power on. You just trashed your horse...

Normal reaction is to pull back on the trottle. Next thing you should is go to neutral, check the piss stream then go in reverse.. hoping to back away from anything hanging on the gearcase. Then look in the water to see what it might have been. If you've been running shallow water in the weeds you might need to pick the water intakes clean on the gearcase..

 

[Vitalsigns]

I've never seen a flow sensor but I've heard of them and that the will alarm long before a temp alarm does. Having a light and horn is good because sometimes you just can't hear the alarm if your running, the good thing about my Yamaha is that the engine slows down when the alarm goes off so I know somethings up. I've picked up eel grass that clogged the intakes and cause the temp gauge to go off, like Dunk said neutral check things out pop into reverse, just don't shut her down immediately.

 

[SeaSparks]

I have seen flow sensors, but they are usualy for larger sizes .5" and up. I do have a Bolt on temp switch link if anyone is interested, email me.