Posted by Wayne
on 5/19/2012, 12:02:07, in reply to "Re: fc 4cyl and 6 cyl radiators"
108.33.126.200
I would watch the temp. if running with out a thermosat, I have done that myself in the past, but never again. After I got into the marine repair and service end, 23+ yrs. what I have seen in a inboard engine, like a 4 cyl. Gm. eng., small & big block Fords & chevy's, if run below aprox. 160 degree all the time, the cyl. wall wear increase and some times will go egg shaped, even the factory's told us about this, Mercury & OMC. The problem is all the engines are set up to run at a set temp., most auto's is 180-200 degrees, the marine eng's at 160 degree's, if they have a enclosed cooling system, then thay will also run around 180 degree's. I would get a 160 degree thermosat and try it,also, when thermosat is marked 160, it will "start" to open at 160, it may not open 100% untill it gets to 170 or so, I have tested many to make sure they work OK. Another thing we would find, the water pump vanes would wear down, hard to see unless you have another pump to look at., just my 2-cents, good luck with it, Wayne in sunny Fl.
--Previous Message--
: Hey Dan:
: Are you not running a thermostat at all with
: no problems?
: Interesting, I had always understood that
: the thermostat not only keeps the engine hot
: enough but also slows down the coolant flow
: so it has time to cool as it passes through
: the radiator.
: Too fast a coolant flow can also cause the
: engine to overheat.
: Will R
:
: --Previous Message--
: That is good info, so I must have the right
: radiator. Finally found my manual, the 6
: cylinder is 11 quats vs 10 for the 150.
: That extra capacity could be in the engine.
:
:
:
:
Message Thread
« Back to index