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  • Heater Hose Replacement

    Driveway mechanics know that maintaining our cars requires old time wrenching experience and lots of readily available parts unique to the SVO. When these specific replacement parts are nowhere to be found, then adaptive use of what’s available is the fallback plan. This is one of those solutions that goes into the “It Worked for Me” parts bin. Hopefully this information and fix will help others in this predicament. All the writings and pictures document what was encountered on the way to this solution.
    Note, I am not affiliated with or receive any form of compensation from the sources shown in this posting. Nor is this an endorsement of the companies whose name appears in this posting.
    It all started out while doing some maintenance work around the intercooler that uncovered a wear area on the rubber heater core supply hose at the firewall. Apparently, the existing molded hose loop stuck out enough to have been coming into contact with the edge of the rear intercooler bracket. Any more driving around in the heat of summertime with this coolant hose was a situation primed to fail. So, the field fix was to remove the existing and replace it with a new piece of straight hose knowing it would kink but at least keep the cooling system intact and not prevent the flow of coolant to the turbo. This would buy enough time to get the correct replacement part or in this case, a replacement that would function correctly.

    A few take-aways:

    1. Online search of current mustang vendors and national brand auto supply companies could not find a specific listing for this hose
    2."
    No “fix it “ video solutions to help guide a solution with the heater cores supply hoses unique bend required at the SVO’s intercooler
    3.
    And there was not time to kick around the “what ifs” since the SVO was to make 2 car show appearances on Saturday. See other postings[
    4. The readily available universal Dorman heater hose bypass kit 626-001 was the solution. The 5/8” hose’s molded bend and materials make a great solution. If the length on both sides were about
    Last edited by EVO SVO; 08-01-2024, 10:43 PM.

  • #3
    The information on the installed universal Dorman 626-001 heater core bypass kit

    0 Dorman 626-001 Engine Heater Core Bypass Kir.jpg

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    • #4
      The next "Final Solution" Gates 19033 Heater Hose evaluation information

      Gates 19033 Molded Heater Hose- Amazon1.jpg

      Gates 19033 Heater Hose comparison.jpg

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      • #5
        Other suppliers for this product

        IMG_E8200.jpg

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        • #6
          And what did not work. Gates 19607 Hose

          Gates 19607 Hose evaluation-small.jpg

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          • #7
            Also, found this is listing in LMR. However just from appearances , does not look like a 1986 SVO solution.

            1986-1993 Fox Body Mustang Heater Hose & Clamp Kit.jpg

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            • #8
              It's not obvious from the posts, to me, at least, but you found that the Gates 19033 fit and cleared the IC? If so, that's freaking awesome!! I struggled with this when I did The Great Cooling Hose Project on our '86. I spent way too much money trying different hoses that just did not work. I ended up using a Gates 19695​ with a 5/8" to 3/4" tubing sleeve to 'make' that 5/8 end a 3/4". So far, so good, but if you found this one works, Thank You!, and I'll order one and throw it into spares for when I have to go there again.
              Gene Beaird,
              86 2R SVO, G Stock,
              Pearland, Texas

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              • #9
                GB, thanks for the reply and inquiry. Let’s see if I can provide a more understandable response.

                I didn’t install the Gates 19033. It didn’t come until after the Dorman bypass hose and intercooler were getting reinstalled. There just wasn't enough time to take off all those intercooler parts and redo another installation.
                While I did not install the 19033 but right now, this Gates hose (don’t know about other manufactures) looks like a very good “Final Solution”. Here is why:
                1. The Gates 19033 is a Ford Mustang (not SVO) specific Fox model replacement so it has the typical molded and enlarged 3/4” end on a 5/8” hose whose molded bend is very strong. Pulling and deforming this molded bend does not allow a kink to form
                2. It is used on a popular Mustang model so this part will be available now and into the future.
                3. The 19033’s hose has a long straight 5/8” section after the bend. So it can be cut to length. Allowing adjustment for any installation where the 2.3l engines motor mounts has allowed a leaning towards or away from the heater core nipple.
                4. Leads me to believe that it can be pulled and cut to fit most SVO installs. Note this is my personal opinion until I finally install the 19033 for evaluation. But there is currently noting that would leave me thinking it is not the best “Final Solution”.
                5 A final install and write up for the Gates 19033 will be done much later when I flush out the entire cooling system. If you go into the Gates Mfg. website you will find a recommendation that we should always change all the rubber hoses when changing the cooling fluids. Hmmm, seems like a little too much and makes me wonder why a rubber hose company would say this HaHaHa. My thinking was keep the original hoses until they explode haha.

                A little background to this Dorman solution. Finishing with the Dorman install with headlamps at 8:30PM did not leave enough time to prep for leaving at 3:30AM for Donut Derelicts and the nighttime Extreme Mustangz car show. Being a driveway mechanic requires that tools come out and go back in every night. And anything left for tomorrow must be in a somewhat sealed condition. Otherwise every ant, spider, rat and rabbit will be making a home inside the MAS or anything with a hole in it. Additionally, what I document is only a partial search for a solution. No mentions about the many trips to O'Reilly's Auto Parts asking to see 3 to 4 other part # XXX to see if they will bend or fit. Just to be fair, these inquiries are accompanied with the purchase of oil, antifreeze or filters etc. So they are "willing" to go into the back and drag these parts out only to put them all away. Some counter people are not real happy about this. BUT I do buy $20 odd dollars of stuff each time, so I am not just wasting their time. Also not shown are the Amazon purchases that are a real stretch for a solution. Like Mercedes hoses and clamps. Note, for some reason the import specs seem to have softer rubber bends.

                I am saying all this so that you rest assured a fair amount of investigation and graphics goes into my writings even though my postings seem like a one day fix and writeup. This one is similar to my catalytic converter posting where it takes at least a month each from start to finish. Like my upcoming aftermarket adjustable clutch cable installation investigation. Seems they all ship without a rubber boot over the exposed cable end. But my searches may lead to a cool overseas solution to the missing rubber boot. Just takes time. Also under evaluation is the installation of new aftermarket hatchback rubber seal. Really happy with this one so far. But it is undergoing a few months of evaluation with summer heat, car wash pressure washer and now waiting for a heavy rain storm.

                Ok, I hope this helps clarify my posting. And glad that this info could be of use to at least one other SVO owner. Hopefully other owner SVO owners will reply with their solution to this problem. Then we will have a more detailed writeup to what can be done.

                Keep shifting.

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                • #10
                  Thanks. I, too, am a 'frequent flyer' at O'Reilly's, and always doing 'Frankenstein' projects, so get to enjoy a lot of time in the back looking at their hose inventory to find stuff that might work. I did not see that hose when trying to solve the issue discussed here, but will probably pick one of those 19033's up next visit.

                  EDIT to add: I picked up one of the Gates 19033, and quickly held it close to the offending hoses under the hood of our car. Since these hoses are hidden under the IC, it was not a thorough examination, but certainly looks like it just might work. Hopefully, the guy who this car and spares goes to doesn't have to either, but it's in the spares bucket. :-)

                  Last edited by gbeaird; 08-22-2024, 01:14 PM.
                  Gene Beaird,
                  86 2R SVO, G Stock,
                  Pearland, Texas

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                  • #11
                    OK, so as I'm getting ready to hook up my heater core that the p.o. bypassed (dunno if it leaked... yet, gonna do pressure test) WHAT was the final verdict on what 2 hoses actually worked, please? From what I'm gathering 19033 cut to fit, or the bypass kit hose? And which for the return??
                    Last edited by Erics SVO; Today, 11:04 AM.
                    -Eric
                    85 1C, 85.5 1B
                    10 GT Premium
                    01 Jeep Wrangler

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