Seamus wrote:
>I'm having some trouble with my bike overheating. I was wondering if
>just pulling the thermostat is a totaly bad thing.
It looks to me like you wouldn't hurt anything by removing the thermostat for
testing in boiling water with a candy thermometer to see what temperature it
opens at. You could check out the temperature sensor at the same time.
Just be careful not to break anything taking it apart. I broke my thermostat
housing cover when I hit the phillips head screw with an impact driver.
Fortunately, I had another cover from a junk bike.
Your thermostat doesn't look like a bypass thermostat. My water buffalo
thermostats had a dual action, they would close off a bypass to a small
diameter heater hose when they opened the main thermostat valve.
I remember old time mechanics answering the question of whether you can run
without a thermostat with the reply that a water pump needed the restriction
of the thermostat in order to work.
Or, they would say that the water need to reside in the cylinder block for a
certain amount of time to pick up the heat. They claimed that the water
wouldn't pick up the heat if it was circulating too fast...
And, in the petroleum refining industry, operators will recommend starting a
centrifugal pump with the inlet valves open and outlet valves closed and then
gradually open the outlet valves.
Which side of the pump is the thermostat on, isn't it on the outlet side of
the pump?
And, is the water pump moving water? A centrifugal pump cannot pump anything
until the impeller is full of---liquid.
Some friends of mine built a water cooled two stroke triple for endurance
road racing. They managed to seize the engine and break a connecting rod
within a few hours of operation.
It turned out that the water pump impeller was full of some fibrous leak stop
compound sold by Suzuki to prevent leaks. The water pump wasn't pumping
anything, even though it was turning.
And then there is the problem of a plugged up radiator core. A radiator
cannot cool the water if water cannot pass from the header tank to the lower
tank, the water pump will just pressurize the header tank.
A friend was adding a gallon of water to his old Buick every day because it
was overheating, and I said, "Why don't we take the radiator down and get it
rodded out?" So we drove around until we found an old guy at a radiator shop
who unsoldered the header tanks and rodded out the vertical tubes and
soldered it all back together.
Too bad you can't get that done so easily with an aluminum motorcycle
radiator. But there must be somebody who specializes in such repairs.
--
Message posted via
http://www.motorcyclekb.com >> Stay informed about: Honda magna v30 thermostat 
FAQ
Profile
Private Messages
Log in
