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  • Pulled the plug on Optima 2, too much to do, no track time, and even waiting for parts... next year... until then, I race locally.
    Doing it all wrong since 1966

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    • Originally posted by SuperBuickGuy View Post
      Pulled the plug on Optima 2, too much to do, no track time, and even waiting for parts... next year... until then, I race locally.
      Dang.. Happens..

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      • Hang in there Brother!
        Patrick & Tammy
        - Long Haulin' 2008, 2009, 2010, 2011, 2012, 2014...Addicting isn't it...??

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        • Originally posted by SuperBuickGuy View Post
          Pulled the plug on Optima 2, too much to do, no track time, and even waiting for parts... next year... until then, I race locally.
          That's racing.

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          • did 2 things today... first, I fixed the horn
            I bought a pigtail for a regular GM column. the system in the C3 is maddening because it relies on a pedestal to maintain contact - downside is putting it together, you're more likely to cause the push bit to come apart then you are to actually get it together.... this solves that problem

            left is the stock set up, right is the replacing wire

            use the spring from the stock set up and lock on the new wire (cut the spade end off to assemble)

            I'm too cheap to buy spacers so some 1/4" vacuum hose became a spacer

            the offending stand

            now a spade male end


            on to alternators.....
            key off, voltage present

            key on, full 12v (the brown wire - which should have a resistor in line)

            the fix is simple, a one-wire alternator.... and now we know why I kept losing alternators.
            Doing it all wrong since 1966

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            • put a load on the wire, and then measure the voltage. Like a light bulb.

              My fabulous web page

              "If it don't go, chrome it!" --Stroker McGurk

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              • or disconnect the battery, turn on the key, then measure the resistance from the brown wire to the big output wire. See if it's zero ohms, or several ohms like it should be (make sure to set the ohm meter on the lowest resistance scale)
                My fabulous web page

                "If it don't go, chrome it!" --Stroker McGurk

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                • Originally posted by squirrel View Post
                  or disconnect the battery, turn on the key, then measure the resistance from the brown wire to the big output wire. See if it's zero ohms, or several ohms like it should be (make sure to set the ohm meter on the lowest resistance scale)
                  great idea, thx.
                  Doing it all wrong since 1966

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                  • no idea what this noise is.... no witness marks on the valve cover
                    Doing it all wrong since 1966

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                    • well, the results but still no idea why.

                      burn marks

                      so it goes like this... did the shielding melt, causing the short or did the load create the heat that melted the wires? I'm going with the 2nd because both were melted but who knows....

                      as far as the noise, it's not from the rotor, nor from the lifters.... with that said, there are some really odd marks on the roller tip but it seems all are basically at the same adjustment...

                      I dunno, initially I thought it was the alternator and I might loosen the belt tomorrow to just be sure it's not. What it does seem is it's dropping a cylinder on the driver's side. the noise isn't really rpm related but rather seems like dropped cylinder related...
                      Doing it all wrong since 1966

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                      • Exhaust
                        maybe #7 is leaking...



                        finally, and I mean finally, my Corbeau seats arrived.... and as seems to be normal, their brackets are useless - way too tall

                        so started the rest of my evening....

                        they look nice

                        so I started decreasing the stack under the seat

                        this is as low as you can get (by bolting the seats straight to the floor)

                        I mentioned the brackets were wrong (again)? they're also incorrect for the C3 (despite claiming to be)

                        thought maybe they were backwards... nope... note that they also lift the back of the seat? good lord why?

                        however, solution.... use the GM sliders with adapters to the new seats (bonus is if I put race shells in the car, this is a standard bolt pattern)



                        as with all things, it took some special tools

                        this is much better, I still wish I'd had it shaved 1" but I have the hog ring pliers and I know how to use them...

                        snug fit

                        eventually, new harness (in date) for the driver

                        gratuitous puppy shot

                        Doing it all wrong since 1966

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                        • Dude - still in awe of the capability to do everything. You really have it in hand. Yea, I was wondering if that "knock" was a header leak or not. Glad you found it!
                          Livin the dream

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                          • Derby cars hard on header gaskets as well
                            as headers. Only thing that really worked was manifold gaskets. Metal side to head and gasket material to header. Have removed and reinstalled without needing new gaskets.

                            Old timer used to soak his header gaskets in water, install and run them a few minutes then retorque. My flatbed is on 15 years with the same header gaskets.

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                            • seat bracket test fit

                              and the front bolts are going to be an utter pain to get to...
                              Doing it all wrong since 1966

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                              • put blue locktite on short studs into floor nuts and use shoulder nuts to clamp it down...

                                Last edited by silver_bullet; July 16, 2021, 09:27 AM.
                                Patrick & Tammy
                                - Long Haulin' 2008, 2009, 2010, 2011, 2012, 2014...Addicting isn't it...??

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