1973 85hp evinrude

[lindsey]

What is sufice water preasure for this engine?

 

[tashasdaddy]

Re: 1973 85hp evinrude

as long as it pees good out the exhaust relief valve. it does not have a tale tail stream.

 

[lindsey]

Re: 1973 85hp evinrude

I installed a tell tail as implied on iboats so would u Know what is the safest min water pressure

 

[emdsapmgr]

Re: 1973 85hp evinrude

Your engine will probably pump 5-8 lbs pressure at idle and 17-20 when at full speed. Depends on how old the impeller is. You can rent a laser temp gun at any auto parts store. Your engine should idle at 143-150 degrees. It will run lower temps when on plane and the pressure relief valves open-depending on how cold the water is.

 

[ezeke]

Re: 1973 85hp evinrude

The thermostat (vernatherm # 0384719) on your engine is 105? F. Normally the engine will run above 100? F. and less than 130? F., measured at the top of the cylinder heads.

 

[autohead18]

Re: 1973 85hp evinrude

it should just spray not much but a little bit also you shoul be able to touch palm on # 3-1 should not burn u bad but a little hot if you got major issues your moter would be so hot it would melt wires and burn paint off moter if you have spray you should be good