Some of you may remember I did a few posting on my 55 292 overheating last fall/I did all the things that a person should do new rad, fan shroud,6 blade fan,water pump, etc This has been going on sent I brought it

When I would do a temp check between top and bottom rad hose I would only have about a 10 to 15 degree drop well I finally got it fixed some one had put a 5 1/2 inch water pump pulley on the car when it should have been a 7 1/2 inch pulley Now I have a 35 to 40 degree drop between top and bottom hose So if your fighting overheating problems check that pulley some one may have put a small pulley on and that water is going through that rad way to fast

Very interesting, an eye opener, thank you, Pat.

That's good feedback Thanks

tom in iowa

54 Merc wagon

54 sunvalley

verry good info,also the chance of cavitation is magnified when waterpump turned faster than it was desighned for,

I found an article that covers most of the overheating issues. This is all documented and actual data with no conjecture.

It covers a lot of ground. Pete



http://teae.org/cooling-the-tiger/

Interesting read, Pete.

I particularly noted they showed no improvement by pinching off or reducing the bypass hose. This seems to be a favorite recommendation for Y-Blocks and I've done it too. Was wondering if anyone had significant improvements after doing that, and that alone.

I did not. Mine's a 55 Fairlane 272 Fordomatic.

I have purchased an aluminum radiator and 7 blade fan and will be installing them in the spring. Hoping for some improvement if not maybe a cure...

Mine gets quite hot, but not overheating on highway, but 10 minutes at idle and you're through the roof.

that test was a lot of work for them/lots of good info/I see that a 12 percent smaller fan pulley help a little bit/Im not sure what the percent would be going from a 7 1/4 to a 5 1/4 but I think it would be a lot more than 12 percent

Thanks for taking the time to post that link, Pete.
It makes very good reading and offers solutions that would obviously work for our cars too.
It would suggest that the engine splash trays may also play a part in cooling by restricting airflow back to in front of the radiator at idle??
Thanks once again.

Rick - West Australia
Do Y Blocks Downunder run upside down? Gravity Sucks!!

Very interesting read!

By my arithmetic a 2" reduction in pulley diameter would be almost 27%. (based o the 7.5 to 5.5 in your inital post). In this post you have specified 7.25 - 5.25. This would be over 28%.

Mark

1956 Mercury M100
1955 Ford Fairlane Club Sedan
Delta, British Columbia