47-55.1 Lincoln Cooling Fan

[mobileortho]

Originally Posted by Hcb3200

DID you do this?

And can you repeat the temp that its running at under normal driving conditions and what temp its getting to idling with everthing hooked up like normal?

No, got halfway through & realized I didn't have a gasket to seal it off. Picked up so gasket material so I can make a temporary one & will try again this weekend.

Originally Posted by dsraven

can you post an underhood pic of your set up that shows the hoses connected etc? curious how things are laid out under there, size of hoses, if there are sharp elbows etc.
doing the flow test would help give you an idea of flow capacity without the thermostat
normal to have no coolant flow through rad until thermostat opens
do you have a heater or are you running a bypass loop at the water pump end so there is coolant flow through the block when the thermostat is closed? this helps reduce hot spots around cylinder heads and steam production when the thermostat is closed.

No sharp edges or weird angles, everything flows pretty straight. I am running a heater. I do have a bypass hose that I'm going to hook up when I remove the stat this weekend to check flow as mentioned above by HCB 3200.

[Hcb3200]

since your pulling it to put in a gasket.
Do the flow test with straight water. makes less of a mess and you are not running it long enough to boil over with that cold water it won't over heat.
Run it idling see what flow is and run it about 1500 and see what flow is.

Then drain and hook all up normal and fill with proper fluid mix assuming the flow is normal and has not sent you off in a issue to troubleshoot.

[dsraven]

You can also run it with no stat and see what flow you have through the rad, then pull the upper hose and do the flow test into a bucket. Like said above. When done and sorted pull the block drains to dump as much water out as possible.

[mobileortho]

So I think I figured it out. Took out the stat and used a bypass on the heater hoses as suggested. Got good flow through the water pump, temp held steady around 185ish. Looks like there's a bad valve in the heater that's restricting flow. I'll put the stat back in & leave the bypass hooked up untill i get around to fixing the heater. Dont need it now anyway! I appreciate all the advise! This LS definitely has a learning curve!