I bypassed the heater core in my 66 289, and I am running a cut piece of heater hose from the outlet on the water pump to the intake manifold in lieu of the heater core. Since I have done this, the car has been running @ 210-225 at highway speeds, but at idle it will slowly drop back down.
The lower rad hose has the spring in it
It is a new OE style 3 row radiator
Water pump is newer
I flushed the block and the radiator until only clean clear tap water was running out
I have a 160* T-stat (Am changing to a 180, but I doubt this is the cause)
The upper hose gets hot when it opens, and everything appears to work just fine.
With the bypass hose, most of the coolant just recirculating back into the block because there is less resistance than going through the thermostat?
Should I put a restriction/blockoff plate in the hose?
This is during summer weather, around 85-90 ambient temps. The car doesn't overheat, it just runs hotter than I am used to (165-180)
The lower rad hose has the spring in it
It is a new OE style 3 row radiator
Water pump is newer
I flushed the block and the radiator until only clean clear tap water was running out
I have a 160* T-stat (Am changing to a 180, but I doubt this is the cause)
The upper hose gets hot when it opens, and everything appears to work just fine.
With the bypass hose, most of the coolant just recirculating back into the block because there is less resistance than going through the thermostat?
Should I put a restriction/blockoff plate in the hose?
This is during summer weather, around 85-90 ambient temps. The car doesn't overheat, it just runs hotter than I am used to (165-180)