Low temp thermostat-Mercury Marine

[CSH-HQ]

Talk to a Coast Guard type, and mention bilge fire.
EPA, lakes, and anti-freeze, yaa
Grumpy
   Have we beat this to death yet?


>What I don't understand is if they don't want the engines to build up 
>scale, so they run them at temps that require frequent rebuilds, why don't 
>they use a closed loop cooling system, glycol and all, and instead of a 
>radiator, use a water to water heat exchanger? (radiator in a tank of 
>outside circulating water) then run a 190 thermostat or so for longevity??
>
>
>At 10:37 PM 10/28/99 +0200, you wrote:
>
>>Hi all!
>>I read an article about Mercury wanted to to take a big leap into high tec,
>>in the 80s I think . They put in a huge amount of money and started to
>>develop the ultimate offshore engine , twin turbo.....the trick about it
>>was
>>that they used separate cooling for block and head. They used o rings
>>for top head gaskets. The head could run at a lower temp than block to
>>lower knock tendencies.
>>The offshore engines was good but no succsess in the offshore races because
>>of "drive train problems".
>>
>>Engine temp is just one of the variables to play with ...how is it possible
>>to find the right relationship between  compression ratio, swirl, ignition
>>advance,
>>fuel amount ,air inlet temp, coolant temp.
>>Maybe the best is hot engine at low output , cold at max torque, and hot
>>again at high rpm.......
>>Variable heat is like variable compression?
>>Maybe a engine that likes to run wery hot would be better off with higher
>>compression?
>>Thinking loud again......
>>Espen Hilde
>
>===========================================================
>            David Cooley N5XMT           Internet: N5XMT at bellsouth.net
>      Packet: N5XMT at KQ4LO.#INT.NC.USA.NA   T.A.P.R. Member #7068
>    Sponges grow in the ocean... Wonder how deep it would be if they didn't?!
>===========================================================
>