Just one more temp. question!!!!

[waterdawg1960]

I have a 97 5.7 L with an alpha one drive and tell if I'm wrong but if you have a 160 degree stat should the boat not maintain 160 or close even at idle? Mine runs at about 60 at idle and pops up to 160 @ 4000 and 180 plus at 4500.

 

[fishinpa]

Re: Just one more temp. question!!!!

A 160 thermo opens at approx 160

180 @ 180 etc !


fish

 

[waterdawg1960]

Re: Just one more temp. question!!!!

I know so would the engine not maintain 160 instead of 60? and if not does that mean it's always open?

 

[John_S]

Re: Just one more temp. question!!!!

My 5.7L alpha raw water cooled has 160 stat and once fully warmed, the engine temp is 175, idle to any speed.

Are you sure that a thermostat is installed? It wouldn't be the 1st, a prior owner has "fixed" a over-temp problem with.

 

[waterdawg1960]

Re: Just one more temp. question!!!!

No I'm not sure!!! lol But i'll have a look see.

 

[Philster]

Re: Just one more temp. question!!!!

If it dips down to 60 and up and down like that, then you either have a t-stat that is stuck open or no t-stat in place.

Get yourself a new thermostat if you feel the temp gauge is correct. Get a new t-stat, install it and see if there was no t-stat in place or if the one in place is stuck open.

Short version: get a new t-stat and install it.

A 160* t-stat gets the cool water into the engine at 160 (because it directly let's the hot water out), and if temps drop, she closes, so that the water temp in the engine can stay at 160+ degrees (jeeze, it might drop a touch below 160 when she finally closes)... but it ain't gonna dip down to 60 if the t-stat is there and is opening and closing as designed/intended.

160-180 seems a very normal range. 175 is marked on most temp gauges and seems the needle lives in that neighborhood after the engine warms up and stays running.

 

[180shabah]

Re: Just one more temp. question!!!!

DITTO - install a new t-stat...