273 overheating after new timing chain set and waterpump
He stated engine was fine after a T stat change last year, and did not start getting real hot until "right after" he replaced the water pump. I am betting they sold him an A/C type 6 bladed pump. Y'all are shooting down the wrong snake hole. If it was a plugged radiator issue it would have gotten hot before and after the water pump change. It's getting hot only after the pump change. That is the only thing coolent related he changed right before this started to happen. Car is non A/C with the larger slower turning pulley, and probably has the wrong 6 bladed A/C pump on it. It's not flowing enough coolant for the impeller speed.
What year valiant?
Thank you Moparmat. You read the whole post and obviously it soaked in. LOL
It's a 1964 convertible.
After checking RockAuto for water pumps I noticed that all of the pics of 273 and 318 water pumps only show steel impellers with 8 blades. I'm pretty sure the new one I put in has the 8 blade not 6, but I can't be sure without removing it. My old plastic one has 10, I counted them today. Also, the new pump had three small outlet holes where my old one had two so I had to plug one. One is for the heater hose and one for the bypass, not sure what the third would be for, maybe the other heater hose in some applications. By the way guys, I didn't do this job because it was overheating, it needed a timing chain set and my boss talked me into changing the water pump too.
For some of the other questions asked.
No it hasn't boiled over, I won't let it get that far.
I don't know the temp, the gauge just has "C" and "H" and a couple of lines in between.
And no , I wasn't talking about a 60 degree day last fall, I'm not dumb.
The rad was checked and a new cap installed.
Timing chain was a typical and easy install.
Thanks again guys. Wally
