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Old 02-10-2018, 05:09 PM   #1
oneshot
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Lower radiator hose solution

On my 69' C10 I had trouble finding a lower radiator hose that would work with an after market aluminum radiator. I used this site to research it and found that a GATES 20843 may solve my problem. With a little work altering the lower nipple and shortening the hose at that end, I got it to work.
If you research on this site before asking, you will same a lot of time.
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Old 02-10-2018, 06:11 PM   #2
toiletbowl54
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Re: Lower radiator hose solution

is the hose rubbing on the frame or is it just the picture?
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Old 02-10-2018, 07:41 PM   #3
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Re: Lower radiator hose solution

did you try twisting the hose so it lays on top of the frame rather than against it ?

https://www.autozone.com/cooling-hea...004_10495_6774

Last edited by Grumpy old man; 02-10-2018 at 07:50 PM.
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Old 02-10-2018, 08:23 PM   #4
oneshot
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Re: Lower radiator hose solution

The hose is 1/2 " from the frame.
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Old 02-10-2018, 11:23 PM   #5
Longhorn 69
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Re: Lower radiator hose solution

Just wondering, could the hose have been turned end for end to fit?
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Old 02-11-2018, 09:02 AM   #6
oneshot
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Re: Lower radiator hose solution

I tried both ways and twisting it. There is only one way it will fit. Sorry about the last photo (out of focus and bad angle to show clearance).
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Old 02-11-2018, 12:16 PM   #7
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Re: Lower radiator hose solution

Quote:
Originally Posted by oneshot View Post
The hose is 1/2 " from the frame.
yes but;when your engine is up and running at normal temperature that hose is going to expand (and contract when cooled back down.) will it still be a 1/2" from the frame??????? keep an eye on that. Just saying, because i had something similar to that happen on my Duramax. Got a hole rubbed right through the hose.
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Old 02-11-2018, 01:26 PM   #8
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Re: Lower radiator hose solution

The engine hasn't been (getting close) started and if that happens I will notch the frame or insulate the hose.
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Old 02-11-2018, 02:54 PM   #9
huntznsam
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Re: Lower radiator hose solution

It's a nice solution if you have the skills. Another option for those of us with zero aluminum welding skills is to spend a bit more time in the books.
https://www.gates.com/resources/reso...fication-guide

I spot a couple that might have been a better starting point.

FWIW, before I voided the warranty on a new radiator, I'd cut the hose and splice it rotating the ends, hoses being cheaper than radiators.
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Old 02-11-2018, 03:01 PM   #10
oneshot
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Re: Lower radiator hose solution

I thought of that, but wanted a cleaner look.
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Old 02-11-2018, 04:02 PM   #11
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Re: Lower radiator hose solution

I got this one from Rockauto and it fit perfect with no modification to anything. I have the same setup as you.

ACDELCO 24035L
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Old 02-11-2018, 05:15 PM   #12
oneshot
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Re: Lower radiator hose solution

I tried the ac delco 24035L and couldn't use it because I have a low mount alternator that was in the way. It's not shown in the last photo, I had to remove it to get the hose in place.
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Old 02-11-2018, 07:18 PM   #13
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Re: Lower radiator hose solution

The HD radiator in my 70 GMC has the lower outlet the same as the OP's photo. I got one at NAPA. It fit just fine.
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Old 02-11-2018, 08:01 PM   #14
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Re: Lower radiator hose solution

Quote:
Originally Posted by oneshot View Post
I tried the ac delco 24035L and couldn't use it because I have a low mount alternator that was in the way. It's not shown in the last photo, I had to remove it to get the hose in place.
Ah gotcha.
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Old 02-12-2018, 03:52 PM   #15
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Re: Lower radiator hose solution

Here is a photo with the alternator installed
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