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Alan_Myers
Luke Skywalker
Offline
Hi all,
Has anyone made up, seen or heard of this being done on TR 4-cylinder motors?
I decided to not re-install the heater in my TR4.
In the engine compartment, I removed the hoses, along with the heater control valve and the original 1/2" heater feed pipe from the lefthand side of the engine. Initially I plugged the outlet at the water pump housing and the return inlet at the right/rear head.
Nice and clean, but...
Looking the coolant flow diagram in the manual it's obvious the rear cylinder gets the least cooling effect since it's furthest from the coolant inlet port at the front of the engine. In other words, by the time coolant circulates all the way back to the #4 cylinder, it's already been significantly heated while passing #1, #2 and #3.
Off to the local hardware store to poke around for some ideas.
Came home with three feet of 1/2" steel tubing (I.D. approx. 3/8") and a few different brass compression fittings. These were used to rig a continuous pipe that uses the same route from the water pump housing as the original heater pipe, but instead curves back and attaches to the heater port on the right/rear of the head. Hopefully this will reroute some coolant directly to the rear of the engine and provide more even cooling throughout.
Think it will work? Anyone foresee any problems?
Alan
P.S. Car has not had overheating problems in the past but motor is getting more tuning tweaks. In an effort to keep it reliable, various other cooling upgrades have been or will be done.
Has anyone made up, seen or heard of this being done on TR 4-cylinder motors?
I decided to not re-install the heater in my TR4.
In the engine compartment, I removed the hoses, along with the heater control valve and the original 1/2" heater feed pipe from the lefthand side of the engine. Initially I plugged the outlet at the water pump housing and the return inlet at the right/rear head.
Nice and clean, but...
Looking the coolant flow diagram in the manual it's obvious the rear cylinder gets the least cooling effect since it's furthest from the coolant inlet port at the front of the engine. In other words, by the time coolant circulates all the way back to the #4 cylinder, it's already been significantly heated while passing #1, #2 and #3.
Off to the local hardware store to poke around for some ideas.
Came home with three feet of 1/2" steel tubing (I.D. approx. 3/8") and a few different brass compression fittings. These were used to rig a continuous pipe that uses the same route from the water pump housing as the original heater pipe, but instead curves back and attaches to the heater port on the right/rear of the head. Hopefully this will reroute some coolant directly to the rear of the engine and provide more even cooling throughout.
Think it will work? Anyone foresee any problems?
Alan
P.S. Car has not had overheating problems in the past but motor is getting more tuning tweaks. In an effort to keep it reliable, various other cooling upgrades have been or will be done.
