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  • Oil Cooler Hook Up Question

    OK I have a Lochead oil cooler that I got on e-Bay .. likely from someone on this board. My bike dose not have the additional plate between the filter and the bottom engine case and there is also no room above my headers for one. On my original 78 XS11 I hooked up the same cooler and it went between the top case to head oil supply line by way of rubber hoses. I didn't like the rubber hoses and want to hook this one up by solid copper lines that run up and over the engine in the frame work.
    QUESTIONS:
    - Is there any issue with hooking up the cooler upside down? The in and out nipples are best facing up for my planned install.
    - Does it matter in what orientation the bypass switch is hooked up? I want it close to the back side of the head, up in the frame work.
    - Should I use 3/8 inch copper lines as was the case with rubber lines or should I use the same size lines as are currently used between the block to head?

    Rob
    KEEP THE RUBBER SIDE DOWN

    1978 XS1100E Modified
    1978 XS500E
    1979 XS1100F Restored
    1980 XS1100 SG
    1981 Suzuki GS1100
    1983 Suzuki GS750S Katana
    1983 Honda CB900 Custom

  • #2
    Rob,

    Suggest that you use rubber or SS braided lines. The solid copper may sound like a 'cool' idea, but they won't last long. The engine is mounted in rubber isolators that allow it to flex in the frame. If the cooler lines don't flex along with the engine, eventually they'll crack.

    Comment


    • #3
      Hey Rob,

      WIth regards to the position of the cooler and the inlet/outlet lines, I think it depends on where the lines open up inside the cooler! It's a radiator, and like on cars, the inlet line is near the top, and outlet near the bottom, so that the hot water can flow from top THRU the lines via gravity down to the bottom getting cooled along the way.

      However, the oil is much more viscous, and perhaps the cooler isn't necessarily a gravity path, but merely a pressure patch ACROSS the cooler, and so it might not depend on whether it's upside down or not?!

      Perhaps you can do a search on Lockhart coolers and see if you can find any install instructions for other coolers and whether they stated if position is important or not!?
      T.C.
      T. C. Gresham
      81SH "Godzilla" . . .1179cc super-rat.
      79SF "The Teacher" . . .basket case!
      History shows again and again,
      How nature points out the folly of men!

      Comment


      • #4
        I did a Internet search and could only find resellers. I'm "guessing" that it would not matter but want to be sure.


        OK flexible braided lines sounds good between the motor and the heat activation switch or go with the tubing throughout but there's not a lot of room in the frame work for lines so I wanted smaller DIA. No doubt the rubber lines with hose clamps is the fastest and easiest hook up.
        Rob
        KEEP THE RUBBER SIDE DOWN

        1978 XS1100E Modified
        1978 XS500E
        1979 XS1100F Restored
        1980 XS1100 SG
        1981 Suzuki GS1100
        1983 Suzuki GS750S Katana
        1983 Honda CB900 Custom

        Comment


        • #5
          Hey there 79xs11F, I,m with T.C.....don't believe position in this case matters. What matters is absolutley don't use copper lines unless you plan on doing a couple circle loops in each to absorb vibration. Don't think you have the room to do this with this application. Your best bet is to use Areo-equip or a simolar stainless line.
          81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

          Comment


          • #6
            To tube?......or not to tube?.......

            Could run tubing with out problems, but first/last few inches connect with hose to accomadate vibration etc...

            mro

            Comment


            • #7
              Remember, the more connections you have, the more potential for leaking.
              United States Merchant Marine Academy, Kings Point, NY
              If I can do it at 18 yrs old, anyone can
              "You know something, You can't polish a turd"
              "What are you rebelling against", "Well, what do you got?"
              Acta Non Verba

              Comment


              • #8
                In and outlets should point upward. The cooler and the lines will drain on shut-off. Then on re-start it will take longer to pump the oil to refill the cooler and lines. This will result in a momentary lack of oil on start up. This is from the Australian XS650 site.
                Cheers, 50gary http://www.xs650.org.au/tech3.html

                Comment


                • #9
                  Originally posted by 50gary
                  In and outlets should point upward. The cooler and the lines will drain on shut-off. Then on re-start it will take longer to pump the oil to refill the cooler and lines. This will result in a momentary lack of oil on start up. This is from the Australian XS650 site.
                  Cheers, 50gary http://www.xs650.org.au/tech3.html
                  Well that was my own thinking on this. From what I understand when the cooler is hooked up in the normal configuration the in and out nipples face down but there is a one way valve in the system to prevent the cooler from draining. So for my set up with the supply and return lines up in the frame I need the in and put nipples facing up so this works out well. I will have to look at the costs of the various options for what the lines will be made of. I may go solid copper from activation unit to cooler and back and rubber from cases to activation unit , activation unit to head.
                  Rob
                  KEEP THE RUBBER SIDE DOWN

                  1978 XS1100E Modified
                  1978 XS500E
                  1979 XS1100F Restored
                  1980 XS1100 SG
                  1981 Suzuki GS1100
                  1983 Suzuki GS750S Katana
                  1983 Honda CB900 Custom

                  Comment


                  • #10
                    Stainless steel lines are excellent and they give "the look"
                    Nearly any configuration is available in many different bends 90s 180s, 45s etc. anodized fittings very nice.
                    Cheers, 50gary

                    Comment


                    • #11
                      Yes I will look into that as well. I guess I need to hit the local auto supply shop and see what available and at what costs.
                      Rob
                      KEEP THE RUBBER SIDE DOWN

                      1978 XS1100E Modified
                      1978 XS500E
                      1979 XS1100F Restored
                      1980 XS1100 SG
                      1981 Suzuki GS1100
                      1983 Suzuki GS750S Katana
                      1983 Honda CB900 Custom

                      Comment


                      • #12
                        Oil cooler hookup dilema...

                        Well I have the same problem as 79XS11F, being that I have no room for an oil cooler adapter plate. With that in mind I was wondering if hooking up an oil cooler between the top case to head oil supply line has worked? Was there any problems with pressure or oil supply to the cylinder head? This is not my first choice for hooking it up but I see no other option.

                        Thanks,
                        Larry
                        Inventor of the YICS Eliminator. Want one? Get it here.
                        http://www.xs11.com/forum/showthread...399#post183399

                        If you're not riding, you're not living!
                        82 XJ1100
                        80 XS1100G (Project bike)
                        64 Yamaha YA-6
                        77 Suzuki TS-185

                        79 XS1100SF Built this one for a friend.
                        See it here... http://www.youtube.com/watch?v=cBYT4C9_6Ac

                        Comment


                        • #13
                          That's the way to go. Many after market coolers were designed to hook up that way. I have however, always wondered if the oil in the cooler was flowing back to the sump when the engine was turned off. Most of those kits did not include check valves.
                          Rob
                          KEEP THE RUBBER SIDE DOWN

                          1978 XS1100E Modified
                          1978 XS500E
                          1979 XS1100F Restored
                          1980 XS1100 SG
                          1981 Suzuki GS1100
                          1983 Suzuki GS750S Katana
                          1983 Honda CB900 Custom

                          Comment


                          • #14
                            It would just seem to me that you would want equal or smaller lines for the oil cooler coming off of this point. If you had a larger diameter line, it would make an easier path to go that way versus up to your head to lube the cam journals.

                            Just a thought.

                            Tod
                            Try your hardest to be the kind of person your dog thinks you are.

                            You can live to be 100, as long as you give up everything that would make you want to live to be 100!

                            Current bikes:
                            '06 Suzuki DR650
                            *'82 XJ1100 with the 1179 kit. "Mad Maxim"
                            '82 XJ1100 Completely stock fixer-upper
                            '82 XJ1100 Bagger fixer-upper
                            '82 XJ1100 Motor/frame and lots of boxes of parts
                            '82 XJ1100 Parts bike
                            '81 XS1100 Special
                            '81 YZ250
                            '80 XS850 Special
                            '80 XR100
                            *Crashed/Totalled, still own

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