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Old 05-15-2019, 04:30 PM   #1
Lyn Smith
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Default 70s Sun oil pressure guage question

Got a friend who is trying to adapt a AN fitting to his 1970s vintage Sun oil pressure guage.He says it has a weird thread on it.Anyone know what thread this is,and where he can get a adapter? thanks
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Old 05-15-2019, 05:28 PM   #2
e vassar
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Default Re: 70s Sun oil pressure guage question

Does it have a copper line? If so it could be pipe thread,if not probably compression fitting.
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Old 05-15-2019, 05:36 PM   #3
Kenney Kelley
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Default Re: 70s Sun oil pressure guage question

You might try a Jegs part # 361-968704 1/8 " npt. Female to 4an it might work and it might not. Kenney Kelley
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Old 05-15-2019, 06:12 PM   #4
Rich Biebel
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Default Re: 70s Sun oil pressure guage question

Old oil pressure gauges used either plastic line or copper with a ferule and had a tapered seat on the gauge. The fitting/threaded part on the gauge was not removable if I recall right. No way to adapt to AN fitting from what I recall. The lines were 1/8 inch.
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Old 05-15-2019, 06:54 PM   #5
FED 387
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Default Re: 70s Sun oil pressure guage question

flare is 45* automotive and not the 37* which is AN--- R Biebel is right you might have to get a "custom" made hydraulic hose or fitting to make it work---you won't have stainless braided but you will have a new hose-----dont forget if you go with a new copper line remember to coil it a few times to allow for engine movement and vibration--FED 387
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