is my 68 oil pressure line correct? - NCRS Discussion Boards

is my 68 oil pressure line correct?

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  • Dale C.
    Expired
    • November 1, 1999
    • 844

    #16
    Re: is my 68 oil pressure line correct?

    Patrick
    Maybe if you lay them out and compare you can see the differences. It would take a million words. There appears to be a difference in almost all of them.
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    • Dale C.
      Expired
      • November 1, 1999
      • 844

      #17
      Re: is my 68 oil pressure line correct?

      That little clip and screw that holds the line to the exhaust manifold (L36 A5 #3784832 and #3817006) are almost impossible to find as the were often discarded.
      Dale

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      • Gary B.
        Very Frequent User
        • July 31, 1979
        • 926

        #18
        Re: is my 68 oil pressure line correct?

        I have looked at four 1968 big block cars. the oil line fittings and the clip are all the same, all four cars. two are 435-hp cars, one 400-hp can and the 390-hp as shown in post #5.

        The picture attached is a February 400-hp car, pretty original car. It's hard to get a better picture with the cars sitting on the floor and with power brakes it makes it real hard to get a good picture of the clip. But, the clip looks like a rubber (or vinyl) coated end, buy natural under where the screw goes.

        I think the AIM's are graphic images, maybe borrowed for passenger cars or ??? Corvette never used a pressure sensor until the later years. I don't think the have used a tee and plugged a port, to much expense and labor.

        Anyways, when the next 1968-69 TIM&JG gets updated, this is what I am going to show for 1968. I think, at least what I have seen on 69s so far, the picture in the manual is correct.

        Gary Bosselman

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        • Dale C.
          Expired
          • November 1, 1999
          • 844

          #19
          Re: is my 68 oil pressure line correct?

          Gary
          If #5 is good, I guess in that mine is quite similar, I sure won't change it. The black plastic line in that picture is not passing through the clip. I have the original black rubberized clip and bolt (off the car) but was waiting to put it and a steel line on. Maybe we should all wait until the dust settles.
          Thanks
          Dale
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          • Brad Hillhouse (37766)

            #20
            Re: is my 68 oil pressure line correct?

            Bringing this thread back to life as I tweak my June 68 L71 for Flight judging. The 5th edition TMJIG on page 178 does not make a differentiation on 427 for 68 to 69 for oil line configuration. Garys photo and description above seems to indicate that 68 should be a black plastic line all the way from the brass fitting at the engine block into the car and oil pressure gauge. The TMJIG shows a photo of a steel line from the engine block to a bracket on the head where there is a fitting that changes the line from steel to black plastic. Although, the photo does not describe if it is a 68 or a 69.

            My question is: on June 68 should I leave my black plastic line all the way from the engine to gauge, or change it to steel line from block to head bracket and then plastic the rest of the way to gauge?

            thank you

            Brad Hillhouse
            37766

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            • Dale C.
              Expired
              • November 1, 1999
              • 844

              #21
              Re: is my 68 oil pressure line correct?

              Brad, I'll be watching cause I don't think anyone has a definite handle on you question. I don't think the 68 was a split tube and was possibly all black plastic and that 69 had a different bracket to accommodate the split metal transition to plastic tubing. Never got a good response before.
              Dale

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              • Brad Hillhouse (37766)

                #22
                Re: is my 68 oil pressure line correct?

                Dale - I was hoping that Gary Bosselman would see this and respond since he had quite a bit to do with the 5th Edition 1968-9 TMJIG.

                Brad

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                • Terry M.
                  Beyond Control Poster
                  • September 30, 1980
                  • 15600

                  #23
                  Re: is my 68 oil pressure line correct?

                  Originally posted by Brad Hillhouse (37766)
                  Dale - I was hoping that Gary Bosselman would see this and respond since he had quite a bit to do with the 5th Edition 1968-9 TMJIG.

                  Brad
                  Don't count on Gary any time soon. The South Carolina Regional is about to start, and he has his 1972 to get there and show for judging
                  Terry

                  Comment

                  • Gary B.
                    Very Frequent User
                    • July 31, 1979
                    • 926

                    #24
                    Re: is my 68 oil pressure line correct?

                    Brad, Sorry for the late reply. On our way to Greenville, stopped for the night.
                    I have in the trailer, will be shown in Greenville, a May built 1968 with identical oil line setup I posted earlier of a June 25th car in Post #5.

                    PLEASE, LEAVE YOUR PLASTIC LINE ALL THE WAY TO THE BRASS FITTINGS OFF THE BLOCK. That is what a 68 should have. Lets not change our cars to suit the judging manual, please... pretty please with oil on it. Lets update the manuals to agree with the way cars are built.

                    Current manual is wrong, a mistake I made. When the 68-69 TIM&JG is updated and 6th Edition is released, it will say 68 had a plastic oil line and 69 had a partial steel oil line. I'll use the same picture in the new manual from Post #5.

                    I have already made the change on my copy of the TIM&JG, it's just too soon to release a new edition. We will have to live with some mistakes for a while.

                    Gary Bosselman

                    Comment

                    • Dale C.
                      Expired
                      • November 1, 1999
                      • 844

                      #25
                      Re: is my 68 oil pressure line correct?

                      I put my clip back on and this is how I'm leaving it, till someone can convene me otherwise.
                      Dale




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                      • Brad Hillhouse (37766)

                        #26
                        Re: is my 68 oil pressure line correct?

                        Gary - THANK YOU for your response during your crazy busy travel time. I greatly appreciate your guidance and will leave mine alone. Thats one thing off my "to do" list to get ready for Vegas Flight Judging.

                        Safe travels and good luck this weekend!

                        Brad Hillhouse
                        37766

                        Comment

                        • Dale C.
                          Expired
                          • November 1, 1999
                          • 844

                          #27
                          Re: is my 68 oil pressure line correct?

                          Wow, thanks Gary I'm happy I didn't change mine either. It looks somewhat correct with plastic all the way. Need to verify the fittings next.
                          Dale

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