300R Serial Number 1E080841
I need some help. I have looked in the manual and on the web and can't find the operating temp range and what temp creates an alarm? Does anyone know?
It's an R with a sportsmaster so it is going to get raised up, I just want to know before I start running it high with props. I have a new hydraulic jack plate coming and I will start playing with motor height.
Allison XB21 2+2
Mercury 300R
I know that mine normal operates right at 140..even in this hot weather..thats running at a min water pressure of 10psi...
Blazer 650 PRO /Nizpro SC SHO
That's a good general-range. Exact alarm threshold may vary from one PCM calibration to another, but will be well above thermostatic temp range.
Best to keep water pressure above 15 psi for WOT operation, you should not experience overheating under those conditions.
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