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#1 |
Registered User
Join Date: Jan 2016
Location: Sugar Hill GA
Posts: 369
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Oil pressure port
I am changing the oil pressure gauge to an electrical one. I pulled the copper line off the fitting at the back of the block but it left a brass treaded fitting in the block. There is no hex head or screw driver slot to try to get this out. Any suggestions? Worse comes to worse I could put some vice grips on it but I don't want it to break off. Also from what I have read this fitting is a 1/8" NPT, is that true?
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1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power |
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#2 |
Registered User
Join Date: Nov 2013
Location: Antioch, Ca.
Posts: 456
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Re: Oil pressure port
Sounds like vise grip time, and yes it is an 1/8-27 NPT.
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Take Care Troy |
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#3 |
Registered User
Join Date: Jan 2016
Location: Sugar Hill GA
Posts: 369
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Re: Oil pressure port
Thanks. I don't have a warm fuzzy feeling about this! After all the other nightmares I have found the PO did on this truck he probably glued that thing in!
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1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power |
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#4 |
Post Whore
![]() Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,166
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Re: Oil pressure port
I have never seen one on out trucks but there are fittings that have a hex inside the fitting that allows an Allen wrench to be used to install or remove the fitting. On the bright side if there is no hex anywhere on the fitting I can't be very tight.
![]() Good luck How about using an EZout or other broken bolt remover? If you did get some brass shavings in the hole you could crank the engine over with the coil wire off and flush them out with oil before hooking the guage line up.
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. ![]() RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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#5 |
Registered User
Join Date: Aug 2016
Location: Idaho Falls, ID
Posts: 233
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Re: Oil pressure port
I just replaced mine, you should be able to put a deep socket over the whole thing and back it out. I don’t remember the size though. 3/8ths maybe?
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#6 | |
Registered User
Join Date: Jan 2016
Location: Sugar Hill GA
Posts: 369
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Re: Oil pressure port
Quote:
Thanks
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1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power |
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#7 |
Registered User
Join Date: Aug 2016
Location: Idaho Falls, ID
Posts: 233
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Re: Oil pressure port
Glad it worked out.
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#8 |
Registered User
Join Date: Jan 2016
Location: Sugar Hill GA
Posts: 369
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Re: Oil pressure port
I fell kind of stupid right now. But as far back as that engine sits seeing in there with my old eyes isn't easy. Plus I can't believe all the stuff I had to take off to get at that fitting.
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1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power |
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#9 |
Registered User
Join Date: Nov 2016
Location: Seattle WA
Posts: 96
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Re: Oil pressure port
Can you share what gauge and sender you're using?
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#10 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,449
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Re: Oil pressure port
Getting old ain't for sissies. I bought a baseball cap with LED lights in it many years ago when I woke for exercise in the morning before going to work. I'm talking about getting up at 3:30 AM, and some streets had no lights. It works sort of OK working on the truck. I'm thinking of getting one of those magnifiers with all the LED lights on it, since the baseball cap doesn't always light up what I want to see.
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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#11 |
Registered User
Join Date: Jan 2016
Location: Sugar Hill GA
Posts: 369
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Re: Oil pressure port
The gauge is a Dolphin, no clue who makes the sender, there are no markings on it. I think I can get a 45 degree male to female and it will work. Just no room back there with the intake, distributor and linkage bracket. The only other place I can possibly use is on the front of the block but I don't this monster sender will fit there either.
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1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power |
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#12 | |
Registered User
Join Date: Jan 2016
Location: Sugar Hill GA
Posts: 369
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Re: Oil pressure port
Quote:
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1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power |
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#13 |
Registered User
Join Date: Jul 2015
Location: Sedalia Mo.
Posts: 1,131
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Re: Oil pressure port
You might consider an "Oil Filter Sandwich Adapter" if you give up on installing the sending unit due to space constraints. They are great for adding oil temp and pressure sensors.
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He who is without oil shall throw the first rod. Compressions 8.7:1 1972 C10 1976 C10 (parts truck) 1985 K20 |
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#14 |
Registered User
Join Date: Jan 2016
Location: Sugar Hill GA
Posts: 369
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Re: Oil pressure port
Didn't think of that. It's an option, thanks.
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1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power |
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#15 |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: Oil pressure port
BTW just for anyone following along, the line should be STEEL and not COPPER. Copper will work harden and leak eventually.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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#16 |
Registered User
Join Date: May 2016
Location: Langdon, Alberta
Posts: 7
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I had to re-route my oil pressure sender in my firebird when i build a 350 vortec for it last year. I got some small copper nipples and fittings from the hardware store to move the sender towards the drivers side a little more. It was very tight and quite the headache, but it worked, there is a little more room in our trucks so you should have no problem. (Although the sending unit might not be as accurate if you go too far?) Make sure to use thread sealent on all heavy oil application threads. Good luck!
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#17 |
Registered User
Join Date: Mar 2014
Location: Lincoln Park, NJ
Posts: 189
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Re: Oil pressure port
Since the mechanical style oil pressure gauges had a line all the way from the engine into the cab to the back of the gauge, and they "worked" then putting a few inches of line in to move the electrical pressure sensor should not affect the pressure readings.
Temperature gauge senders, on the other hand, should be "in the flow" inside the part they mount to. Too many adapters can move the probe into a dead spot and cause them to potentially read low.
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