Over heating on Highway
#1
Over heating on Highway
Hi I have 67 Coupe 289 that over heats on the Highway put not in the city.I have flushed the rad (2 core), new stat, hoses ,belts. There is a shroud and a 17 1/2 or 18 inch 7 blade clutch fan. pump look new from last motor re build.Think the fan and clutch may be wrong,I think it belongs to 24 inch Rad for 390 or 428 from what I found.Any ideas.
#2
RE: Over heating on Highway
I'm running a 17 inch 6 blade mechanical fan on my 289, so that should be the correct size. Your clutch fan may not be working right at highway speeds. However, if I were you I would upgrade that old 2 row rad up to at least a 3 row. You might also consider an electric fan with an upgrade to the alternator if it continues to give you trouble.
#3
RE: Over heating on Highway
well at highway speeds, it doesnt matter if you even have a fan or not. The speed your going is has plenty of air going thru the radiator. A fan isnt going to do anything going that fast, unless your revs are up. Its just there for the ride until you get into city speeds.
#5
RE: Over heating on Highway
ORIGINAL: usmcdevilmp
well at highway speeds, it doesnt matter if you even have a fan or not. The speed your going is has plenty of air going thru the radiator. A fan isnt going to do anything going that fast, unless your revs are up. Its just there for the ride until you get into city speeds.
well at highway speeds, it doesnt matter if you even have a fan or not. The speed your going is has plenty of air going thru the radiator. A fan isnt going to do anything going that fast, unless your revs are up. Its just there for the ride until you get into city speeds.
#6
RE: Over heating on Highway
Yup, that could be.. If you're temp is okay around town and only heats up on the highway, I would look at the bottom hose as was stated and also think about changing that two row to a three row... You also may want to think about a high flow water pump.
ORIGINAL: redstallion
you bottom hose may be collapsing. If it is then you can either replace it or put a spring in there,
you bottom hose may be collapsing. If it is then you can either replace it or put a spring in there,
#9
RE: Over heating on Highway
ORIGINAL: tylerdru
He is in canada so i think i may be able to get away with a 2 row for now. put a spring in the bottom hose.
He is in canada so i think i may be able to get away with a 2 row for now. put a spring in the bottom hose.