New to me 8N, side mount distributor. Seemed to run without issues when I tested it in POs yard. Got it home, started dragging the yard, and noticed it steaming out of the rad cap soon after. Figured cap went south, filled radiator up, and put another random cap on from the parts shelf.
Continued to steam over, and shortly after remembered not to fill down flow radiators all the way up like modern radiators... thanks Google!
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Figured it would just steam it's way to equilibrium, which it seemed to do, and eventually stopped. About 30 mins after that, it started showing signs of running hot - a bit down on power, started pinging, and noticed white smoke coming from exhaust.
Shut it down, pulled head next day, and yep - evidence of water in #3 cylinder. Flushed block, flushed radiator to make sure it wasn't plugged. It's not, water flows well top to bottom, and bottom to top.
New Fel-Pro head gasket went in, head torqued, new belt, thermostat removed, new hoses, everything assembled, radiator filled to just cover the tubes, but still under the level of the top inlet. Fired it up, and no water is flowing. After a couple minutes of running, I would see a bit of surge of water coming from the top inlet, then nothing for about 20-30 seconds, a quick surge, nothing, and repeat. I shut it down again to prevent another overheat.
Just pulled the water pump expecting to find heavy erosion, and it looks virtually new inside, but based on the faded paint on the outside, looks like the original pump. Impeller is also firmly fixed to the shaft, so I don't think it's slipping under load.
Is there some kind of special filling procedure for these things to prevent air lock? Something else I'm missing? There's no apparent reason I can see to prevent water flow....
Continued to steam over, and shortly after remembered not to fill down flow radiators all the way up like modern radiators... thanks Google!
. Figured it would just steam it's way to equilibrium, which it seemed to do, and eventually stopped. About 30 mins after that, it started showing signs of running hot - a bit down on power, started pinging, and noticed white smoke coming from exhaust.
Shut it down, pulled head next day, and yep - evidence of water in #3 cylinder. Flushed block, flushed radiator to make sure it wasn't plugged. It's not, water flows well top to bottom, and bottom to top.
New Fel-Pro head gasket went in, head torqued, new belt, thermostat removed, new hoses, everything assembled, radiator filled to just cover the tubes, but still under the level of the top inlet. Fired it up, and no water is flowing. After a couple minutes of running, I would see a bit of surge of water coming from the top inlet, then nothing for about 20-30 seconds, a quick surge, nothing, and repeat. I shut it down again to prevent another overheat.
Just pulled the water pump expecting to find heavy erosion, and it looks virtually new inside, but based on the faded paint on the outside, looks like the original pump. Impeller is also firmly fixed to the shaft, so I don't think it's slipping under load.
Is there some kind of special filling procedure for these things to prevent air lock? Something else I'm missing? There's no apparent reason I can see to prevent water flow....
