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1966 Mustang Coupe, 5.0 Swap, EFI/MAF, T5z
Dewalt 24 Inch Radiator: Model: 32-4138006M (Natural/Manual)
1968-1970 Mustang Top Right/Bottom Left – DeWitts™ Direct Fit® Aluminum Radiators
First of all, I managed to not get hurt miraculously and the install is complete. Full write up coming.
The main problem was finding a lower hose that fit. I used a flexible hose but didn't like it. It didn't look clean and the flex created a bit of a pinch point that I was worried would restrict flow. So what I tried to do was use the ????? hose that was recommended. The bend was correct but it was too tall. I foolishly thought I could split the hose to make the height less and keep it together with a metal insert and some hose clamps.
Well as you can see below... this didn't work. From my fluid dynamics course, I should have realized that the pressure would build in axial direction and push the hose apart which is exactly what happened. I ran the engine for about 15 minutes after getting it all installed and thought I was in the clear. Then I noticed a small drip of coolant and STUCK MY HEAD UNDER THE CAR. I pulled myself out from under the car not exaggerating 5 seconds before the hose split and sent boiling coolant everywhere. Had I had my head under the car for just a moment more I would have gotten seriously hurt. Yea yea yea, that was a pretty stupid thing I did. Got lucky on this one.
Anyway, went back to the flex hose. Holds temp great, fans work great. Fans are a bit louder than I'd like but they barley ever come on. Drove about 100 miles no problem. Learn from my mistakes!
Last edited by TremendousWand (12/27/2020 7:53 AM)
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Liked the last pic especially.................BFH-at-the-ready!!!
Glad jew didn't burn your face off too!
6s6
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If you can't find a hose you really like an alternative is to make a steel or aluminum tube and just use short lengths of straight hose on the ends. You'll want to have a raised bead where the hose slips on. There are tools that can do that with a die, or you can add a weld bead. Paint it black and it won't stick out more than the flex hose, and probably less.
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Glad to hear you didn’t get hurt.
I have a 289 configured radiator (pass in/pass out) with a stock 5.0L water pump configuration (driver out).
This is what I am using and this the vendor I purchased from as well.
Hope this will help.
Some radiator hoses are made longer than needed and can be trimmed for length.
The ‘70 hose won’t work with your radiator?
Last edited by Nos681 (12/27/2020 10:25 AM)
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I do not understand why a hose for the 70 Mustang or 74 Maverick would not fit it correctly, other than you used an aftermarket radiator, maybe? How far from the car centerline is the lower hose positioned? Your radiator looks exactly like my Griffin (except no electric fans on mine). The 70 lower hose fits perfect. I do not follow as to what you trimmed?
Even the original spec hoses for original 24” radiator had to have the length trimmed a little on both ends in order to fit, but they always fit perfect once trimmed to fit.
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I got blasted in the chest from hot coolant when the cap came off as I was leaning over top of it. Still have the scar on my chest from it.
On a side note I'm stuck between performing this mod before I may need or just got with the stock fitting radiator and hope my 418 with AC will stay cool.
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Glad to hear you didn't get hurt...that could have been bad.
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years ago our pastor was on a road trip, noticed the car was getting hot. pulled over at a convenience store, opened the hood of the car and the top radiator hose blew up in his face. his wife ran in the store grabbed a bag of ice and put it on his face. he was hospitalized for a few days. no long term effects, no scares.
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Definitely glad you are OK, sounds like 2020 is not gonna give up easily.
If you're looking for an excuse for a new tool Summit has some cheap bead rollers, I picked one up when I was doing my blower install. Or like the guys showed just grab a coupler with the ends already rolled.
Last edited by Raymond_B (12/31/2020 3:00 PM)
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MS wrote:
I do not understand why a hose for the 70 Mustang or 74 Maverick would not fit it correctly, other than you used an aftermarket radiator, maybe? How far from the car centerline is the lower hose positioned? Your radiator looks exactly like my Griffin (except no electric fans on mine). The 70 lower hose fits perfect. I do not follow as to what you trimmed?
Even the original spec hoses for original 24” radiator had to have the length trimmed a little on both ends in order to fit, but they always fit perfect once trimmed to fit.
I went through 3 different molded lower radiator hoses and ended up back at the flex hose. As you know, the radiator is actually supposed to be offset about an inch from center line of the car b/c of the battery. Visually, this puts the radiator cap on the center line. Since I have the battery relocated to the rear and I didn't want to hole cut out to end up asymmetrical I opted to center the radiator. In theory, this puts the lower driver side outlet 1/2 inch off where it should be but I don't think that should make enough of a difference. IDK, I'm done messing with it at this point.
I've put +150 miles on it since the upgrade with no problems. If anything, it is hovering around 170 degrees while going down the highway which is a bit cool but it was 50 degrees outside most of the past week so I suspect that had more to do with it than anything. In traffic and at idle, temperature was topping out at 195 on the gauge w/ the fans going on and off exactly how it was supposed to work so I'm pleased.
I'm done w/ the under the hood stuff for probably the next 18 months. I'm shopping a rack and pinion manual conversion kit to address my wonky anxiety inducing steering for 2021. 2022 will be the entire entire 9 inch rear upgrade.... After that, the plan is to upgrade to a more aggressive CAM swap, rocker rollers, and a custom tune. I'll have to pull the radiator at that point and I'll revisit the hose issue.
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