175HP blackmax running too hot?

[j_martin]

Re: 175HP blackmax running too hot?

thanks for all the replies. However I am still trying to determine if the engine is running hot or not.
Dose not hit the over heat alarm.
appears to be running less than 175 degrees.
gauge or sender may be at fault.

I believe, good friend, that you have been advised to round file the temp gauge and rely on the pressure gauge. There's good reason for that.

As I posted above, you're managing the cooling of one hellish fire, and with a relatively primitive one pass cooling system under a variety of conditions. The temp will vary quite widely and still be perfectly normal. Water pressure, however, runs a certain pattern, and early warning of the pattern changing is your best bet to avoid an overheat. Should you miss the clues and the cooling fail to the point of making steam, the overheat alarm will warn you in time to prevent damage.

The best thing you can do is put a louder horn on the overheat alarm.

hope it helps
John

 

[jigmister]

Re: 175HP blackmax running too hot?

thanks John.
I did indeed install a pressure gauge quite some time ago. (year or so)
Pressures are the same. I always figured the higher pressure the better. Listening to your advice I understand that is not always the case. It is clear to me now that a restriction will cause high pressures.
For now I will just keep a close eye on things.

thanks

 

[j_martin]

Re: 175HP blackmax running too hot?

I sawed a rotten log in half with the outboard one time. Clogged it up pretty good with the toothpicks thus created. Had all kinds of water pressure, but not much cooling till I opened up the exhaust chest and cleaned the toothpicks out.

 

[shankforce]

Re: 175HP blackmax running too hot?

you can get a remote heat sensor and look for hot spots on the motor. I bought one cheap.