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Daves1940Buick56S

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Posts posted by Daves1940Buick56S

  1. I got a massive leak at the exhaust pipe to valve body connection last week. I took the exhaust pipe down and it was not what I expected. I thought it would be more like my 1940 248 with the ridged pipe. This is flared at the end. (See pic) Pipe OD is 2 1/4". OD of the flare is 2 1/2". ID of the valve body hole is a bit over 2 1/4". Flange is a flat plate.

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    First, is this correct for a 320 of this era? The parts are Waldron and I got them 2 yrs ago but I did not install them. It appear the installer put on some kind of donut that was too long so the excess was dropped into the pipe. (See pic) What is the gasket supposed to look like - is it a flat gasket or donut? If donut I assume it would go valve body -> donut -> flared end of pipe -> flange.

     

    467521049_20220925_1731491.jpg.5061bd714d7d75883b6e2e60c5a09ea3.jpg

     

    I did get a couple of what I thought were the proper gaskets from Bob's a couple of years ago just in case. They are flat with the hole being almost 2 3/4" diam. I don't see how that would work with this setup. BTW Bob's exhaust parts availability seem wanting. Supply chain issues?

     

    Comments welcome.

     

    Thanks, Dave

  2. When I had the dash out on my '38, I put in 6V bus bars fed by heavy relays with power directly from the live batt circuit and controlled by the ignition switch line. So when I turn off the ignition all goes off but the headlight/park/tail lights and brake light circuit. Edit: and the clock! Forgot about that!

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  3. I think they were separate from Day 1. Still separate in 48. I think maybe 49 was the first year they were slaved but there is a separate control for dimming. My 38 had a slide switch, one side for map and the other way for panel. No dimming. I put in a switch that replaces that and allows for 2 brightness settings. I also have a separate swiotch for the map light in the center of the dash.

     

    The switch for my 1940 is stock. Center, all off. To the left activates the map light above the ignition switch. To the right, 2 postions for panel lights, one bright and one dim. The 41  and onward has a switch on the center panel for instrument lights with 2 or 3 dimming positions, I can't remember.

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  4. Nice Terry! Since you are diligently checking temps after each drive, might I suggest keeping a log of date, time, and the temps that you read. That way you can catch a trend, like a slow increase on the packing nuts, and possibly prevent a problem. Sorry, my engineering mind at work.

     

    Cheers, Dave

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  5. I am about 90% sure the engine in my 40 Super is a replacement engine. Painted black with no evidence of 1940 gray underneath. My rod bearings are Babbitt. My serial number is in the correct place. I read somewhere that Buick sent out a stamping kit with the engines so that the dealer would stamp the old number onto the new engines, although this was not always done.

  6. So with the carpet up you are looking at a large square hole in the floor and you can easily see the pedal linkage going to the clutch and master cylinder (and the ground)? I am not sure about 1950 cars but my 40 and 38 both have a small rectangular metal panel with 2 holes for the pedal shafts with slots cut above them. You slide the cover over the shafts and it screws down onto the floor pan.

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