Post Number: 11
|Posted on Sunday, December 08, 2013 - 06:19 am: ||
I have a question, the engine I'm taking care of, a P5m, doesn't get warm enough, the cooling water comes lukewarm out of the boat.
I noticed in the manual they mention a thermostat, even two types, but this engine has none.
Would be nice though.
Is it an option? where would it go, and how would it work?
What I have is the circulation pump, a copper pipe to the exhaust outlet cover(with water inlet nipple), from there circulation through the engine and from the cilinder head a pipe out.
Under the water inlet nipple there is also some kind of nipple, stuck, rusted, first I thought tha was supposed to be the thermostat, but that's impossible, there is no bypass, the pumped water would have nowhere to go if this nipple would close.
I would be gratefull for any information
Post Number: 130
|Posted on Sunday, December 08, 2013 - 07:06 am: ||
Hi Rob, The model with the thermostat uses a different Head assembly with the thermostat fitted into a cast recess and a different piping setup.
To increase the temperature with your current setup just insert a restriction in the water inlet line to slow the water flow. I had to do this with my 3 HP Hall and I used a small Ball Valve to do this. Works well. Just adjust the flow till the temp is warm enough.
Post Number: 12
|Posted on Sunday, December 08, 2013 - 07:39 am: ||
That is an increddeble quick answer, thank you!
So no thermostat for this engine. To restrict the water inlet could I also restrict how far the handle on the seacock can turn open?
kind regards, Rob
Post Number: 2
|Posted on Monday, December 16, 2013 - 02:49 pm: ||
The attached clarifies the 'thermostatic' P5 / P55 water routing when the engine is cold / hot.
In preference to throttling the water intake, I'd pop a bleed valve between the water pump outlet & the point @ which the water is piped into the block - this bypass valve can then be adjusted to vary the engine temperature...
Post Number: 14
|Posted on Monday, December 16, 2013 - 03:19 pm: ||
Thanks for the drawing, it clearly shows the difference in piping between the models with or without thermostat.
I like the idea of making a bypass, i think I'll do that