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Regarding the upper radiator hose... is the 1977 and the LATE 1979-1980 hoses the same shape and size except for the inlet and the outlet ID's??
The 1977 has ID's of 1.5" on both sides
The LATE 1979-1980 has 1.25" on the radiator side and 1.5" on the thermostat housing side.
I need to put a LATE 1979-1980 radiator hose on my 1977 because my new aluminum radiator has a smaller inlet size on it. Its 1-1/3" so my 1.5" stock hose is too loose.
None of the local auto parts stores around me have the Late 1979-1980 hose in stock so that I can compare it to my 1977.
So... I bought the 1980 hose. Dayco part number E71029 is the part that every auto parts store seems to cross reference to. Its ALOT smaller in diameter. The thermostat side is 1.5" and is the same diameter as the stock hose. About 4 inches away from the thermostat side the hose reduces down to 1.25". It is noticeably smaller than the stock hose. It fits my new AE718 radiator perfectly but I don't like the bend right before it goes into the radiator. It looks a little compressed in that bend. The stock hose (that doesn't fit) is much beefier and there is no compression at that bend area. I am probably over thinking this but I am not liking how it looks. I am thinking I need to go back to the stock hose and figure out a way to get it to secure to the new radiator inlet (which is 1-1/3"). I was thinking about using high temp compression tape or... possibly... taking the new smaller hose that I bought and cutting a 3" piece off of it and attaching it to the radiator inlet. This would increase the diameter of the inlet large enough so that I could slip the stock hose over it and clamp it into place.
That small bulge looks fine to me, have you seen how it looks when the system is pressurized? Dont neglect to install all the foam seals between the radiator and the support and the support and the hood.
That small bulge looks fine to me, have you seen how it looks when the system is pressurized? Dont neglect to install all the foam seals between the radiator and the support and the support and the hood.
The pictures I posted make it look a lot better than it does in person. The bend right before the radiator inlet is compressed. Couple that with how narrow the hose is and I am thinking its going to restrict water flow.
Regarding the foam seals... both the vertical seals on each side between the radiator and the support and the seals on top between the support and the hood are in place. I had to shave the vertical seals down because the new radiator tanks are thicker than the stock radiator that was in there. I shaved them down so that I could set the radiator back a little bit and be able to snap the radiator shroud into the 2 clips in the bottom support pan. Everything worked out and fit perfectly. Once I sort out the upper radiator hose to where I feel its acceptable I will fill her up with fluid and give her a whirl. My wife is dying to ride in the car. I think its the first 4 wheeled vehicle I have ever owned that she actually wants to ride in.
Yes, shorten the hose. Think I would cut the thermostat end and pull the hose over. Take that end off and Just pull on the hose and see before you cut it.
since we've entered the experimentation phase.....maybe that will work by getting rid of that kink?
Can't see the whole hose so don't know if you have interference issues along the hose path that would be made worse by shortening the hose at either end?
Last edited by carriljc; May 26, 2016 at 11:27 PM.
Upper Radiator Hose??
