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Joined: Feb 2013
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Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Feb 2013
Posts: 45 |
Back to the well again... My '55 Bel Air has the original bulb/capillary tube temperature gauge, and it still works. I can put the bulb in hot water and read a good temperature on the gauge. However, since I've had the car ('79!) this has never been hooked up; the engine had a newer head with an electronic sensor & separate readout. Now I want to go back to old school. My question has to do with what seals the bulb in the head? The nut/bushing behind the bulb is squared off, including the threads, so the seal clearly isn't made by the threads. The bushing pushes against a flange around the top of the bulb, so maybe that's what seals, but I would think there should be some kind of gasket there. Here's a photo of what I have. Any advice on how it should go together would be much appreciated. Thanks, Joe ![[Linked Image from i897.photobucket.com]](http://i897.photobucket.com/albums/ac177/jdeev550/temperature%20sensor_zpsdtwdjr4k.jpg)
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Joined: May 2002
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ChatMaster - 6,000
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Joe
While I cant be specific for your situation most of those bulbs seal on the tapered edge and require a similar edge either in the head or a adapter.
If you havent got an adapter your local parts shop may have.
Tony
1938 1/2 ton Hope to drive it before I retire
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Joined: Jan 2002
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ChatMaster - 25,000
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ChatMaster - 25,000
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To installl a 1955 (or older) temp. gauge in a 1956 or later head made for an eletrical sender an adapter or bushing is used.
It was Chevrolet part # 3837160, 5/8" -18 thread internal, 1/2 14 external thread.
They all have self-seal tapered seats so a sealant is not necessary.
I believe the adapter is available from NAPA>
Gene Schneider
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Joined: Feb 2013
Posts: 45
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Feb 2013
Posts: 45 |
This is a '55 head, so I can just screw the bushing in. If I understand, right, the bulb will seal against the head, with nothing else needed. Correct?
Joe
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Joined: Feb 2008
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This is a '55 head, so I can just screw the bushing in. If I understand, right, the bulb will seal against the head, with nothing else needed. Correct?
Joe This is taken from Patrick Dykes instructions, when converting from a 216 to a 235.
3.If your "new" '235 has the big water-temp. hole, ask NAPA for Balkamp part #701-1798 (Weatherhead calls it part # 202x5x4). Now, your original temp. sender fits.
1951 Chevy Styleline Deluxe 2 door sedan / purchased from second owner 6-19-2000.
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Joined: Jan 2002
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From what I see a 1955 sender threads directly into a 1955 head.
Gene Schneider
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Joined: Feb 2008
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From what I see a 1955 sender threads directly into a 1955 head. Yes, that is correct. I thought the engine was a '55 going into an earlier vehicle, which had a 216.
1951 Chevy Styleline Deluxe 2 door sedan / purchased from second owner 6-19-2000.
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