proper way to bleed cooling system?

[nrubenstein]

I have some advise to offer. I just replaced my M50 with a different one due to the car overheating. I spent so much time getting the coolant system right the second time, taking every precaution I could. I installed an aftermarket VDO guage and cant keep my eyes off it. I have a brand new M42 radiator, 16 inch electric fan(ran through a relay to a switch in the car, I used water wetter, Zerex G05 coolant and distilled water, New metal impeller water pump and low temp thermostat. I bled the system by jacking the car up as high as possible, filled the coolant, ran the car for 10 minutes-watching the temp like a hawk, then I let the car sit for a couple hours, filled the coolant, opened the bleeder screw, installed cap, and ran the car for a long time, held revs at 2k rpm for a while, closed the bleeder and I was good to go. My temp when driving in 80-90 degree temps sits at 185-190, if the temp gets higher I throw my fan on and it drops immediately.

DONT TRY TO GO CHEAP ON COOLING SYSTEMS-THE M50 IS VERY EASY TO OVERHEAT AND CRACK THE HEAD!!!!

I have not had any oil or coolant consumption with my new motor and that makes me happy!
My .02

Putting the fan on a switch is, in fact, going cheap and asking to hurt the motor. If the cooling system isn't automatic, it isn't good enough.

[rpob5t]

another trick is to put some vacuum on the overflow line (small line) between the radiator and overflow bottle; if you want to redneck it and suck on the over flow tube just make sure the car is COLD and you have beer to wash the anti-freeze taste out of your mouth, and of couse spit out any antifreeze you take in :p (commence with the "thats what she said" jokes)

[samiam3356]

This works very well, except I would not recommend it for a cold climate (like Canada). Might give some issues getting to temp, especially in the winter.

I'm going to be doing this very soon and was wondering if you could or have tapped the hole so that you could put a screw in to plug the hole once its bled properly?