You should see in the neighborhood of 30 psi on the engine side of
the t-stat housing and in the vicinity of the radiator cap's pressure
relief value on the upper radiator hose, probably around 10 psi.
Tony Drews
At 09:08 PM 2/7/2013, Greg & Alison Blake wrote:
>FOT
>
>
>
>Anyone out there every gauged coolant pressure on the TR block? I'd love to
>see the results.
>
>
>
>I am going through the process of adding a surge (expansion) tank on my TR3
>and I am starting to wonder if I am plumbing the return line in the correct
>spot. I have installed the tank in the battery box with a line entering the
>top of the tank that originates at the heater port in the rear of the head.
>For the return line, off the bottom of the expansion tank, I have added a
>welded fitting in my top radiator hose between the thermostat housing and
>the radiator to accept the return line. I use a cross flow Chevy style
>radiator so I have a metal radiator pipe between the thermostat housing and
>the intake for the radiator. I thought it would be better to introduce the
>hot coolant from the expansion tank back into the radiator vs dumping
>directly back into suction side of the water pump via the return heater
>port. My thinking was that I should not introduce hot coolant into the
>suction side of the pump and re circulate it back thru the block. The way I
>have it plumbed (if it works), the hot coolant from the expansion tank will
>first go thru the radiator then into the pump and back thru the block. I am
>guessing that downstream of the thermostat housing (I use a thermostat) the
>pressure will be lower than at the back of the block.
>
>
>
>My questions are:
>
>Has anyone measured pressure between the thermostat housing and the
>radiator?
>
>Has anyone measured pressure at the back of the head heater port?
>
>What is the difference?
>
>Am I going to get coolant to flow from my expansion tank back into the top
>radiator hose or is the pressure higher in that top hose than the back of
>the block?
>
>Would it be better to plumb the return line into the return heater port?
>
>
>
>Thanks,
>
>
>
>Greg
>_______________________________________________
>fot@autox.team.net
>
>http://www.fot-racing.com
>
>Donate: http://www.team.net/donate.html
>Archive: http://www.team.net/archive
>Forums: http://www.team.net/forums
>Unsubscribe/Manage:
>http://autox.team.net/mailman/options/fot/tony@tonydrews.com
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
|