Oil Pressure Sender [message #331079] |
Thu, 19 April 2018 09:27 |
Carl S.
Messages: 4186 Registered: January 2009 Location: Tucson, AZ.
Karma: 13
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After the engine failure, rebuild, and break in process, I think my stock oil pressure sender has some schmutz in it and is reading erratically. I need to replace it. I walked out of the house this morning without the parts interchange manual (part of the aging process, I suppose) so I need the part number for the proper sender.
I also noticed there are two different part numbers, one for 0 - 60 psi and one for 0 - 80 psi. Which one should I get (closest to stock)? I replaced this part before and the parts man had a hard time finding a sender as opposed to a switch for an idiot light.
Thanks,
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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Re: Oil Pressure Sender [message #331083 is a reply to message #331079] |
Thu, 19 April 2018 11:42 |
jhbridges
Messages: 8412 Registered: May 2011 Location: Braselton ga
Karma: -74
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I'd use the 0 to 60 one. Mike Briere's coach was on its third sender when it left here, and that sender was failing. It's probably not junk, but a failing heathen chinee sender which is coming apart internally from engine vibration. A classic racer at The Mitty showed me the cure in an old 'vette - remote the sender on a piece of braided oil line and bolt it to the radiator frame or fender well. He said even the chinee ones last that way.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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Re: Oil Pressure Sender [message #331084 is a reply to message #331083] |
Thu, 19 April 2018 12:25 |
Carl S.
Messages: 4186 Registered: January 2009 Location: Tucson, AZ.
Karma: 13
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Thanks Johnny, I suspect the stock sender is a 0 - 60 unit, so that's what I will try to get.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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Re: Oil Pressure Sender [message #331104 is a reply to message #331084] |
Thu, 19 April 2018 21:11 |
Bruce Hart
Messages: 1501 Registered: October 2011 Location: La Grange, Wyoming
Karma: 5
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Johnny, that Napa number is
OP6640
OP6640SB value line
Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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Re: Oil Pressure Sender [message #331120 is a reply to message #331079] |
Fri, 20 April 2018 07:30 |
jhbridges
Messages: 8412 Registered: May 2011 Location: Braselton ga
Karma: -74
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Bruce, I used whatever Advance supplied. They're all Pacific Rim any more, and the pivots inside shake apart and the fulcrum falls out. Alls you have to do is go in the store with the dead one, give some ID - phone number is best- and they hand you another one, good for another year or so.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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Re: Oil Pressure Sender [message #331124 is a reply to message #331079] |
Fri, 20 April 2018 07:49 |
Ken Burton
Messages: 10030 Registered: January 2004 Location: Hebron, Indiana
Karma: 10
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I would go with the 80 PSI sender. Here is my logic.
40 PSI which is where I would expect the gauge to run going down the highway would be 1/2 scale. 60 PSI which is where the relief valve would kick in cold would be 3/4 scale. If the relief valve in the pump were ever to stick driving the cold oil pressure higher than 60, you would see it using an 80 PSI sender. You would not see it using a 60 PSI sender.
I believe 80 PSI is OEM.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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Re: [GMCnet] Oil Pressure Sender [message #331170 is a reply to message #331163] |
Sat, 21 April 2018 00:58 |
Ken Burton
Messages: 10030 Registered: January 2004 Location: Hebron, Indiana
Karma: 10
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I thought that the NAPA OP6638 was the 80 PSI sender and the OP6636 was a 60 PSI sender. Checking the NAPA web site both show 80 PSI which may be a mistake on their part. It makes no sense to me to have 2 part numbers 2 digits apart for the same item. That said I would go for the one that ends in 8. If you have to get the other one OP6636 I think I would connect it to say 40 or 60 PSI air pressure and read it's resistance before installing. Then you can prove me right or wrong.
Ken B.
Bruce Hart wrote on Fri, 20 April 2018 20:28Mike,
80# NAPA # OP6638 and OP6636
On Fri, Apr 20, 2018 at 11:46 AM, Mike Hamm wrote:
> What is the Napa part number for the 80 PSI sender?
> --
> 1977 Kingsley 455 as stock as it gets except lots of Ragusa parts
>
--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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Re: [GMCnet] Oil Pressure Sender [message #331172 is a reply to message #331170] |
Sat, 21 April 2018 04:01 |
GMC Cruse
Messages: 606 Registered: June 2009 Location: SE Michigan
Karma: 3
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Ken Burton wrote on Sat, 21 April 2018 01:58I thought that the NAPA OP6638 was the 80 PSI sender and the OP6636 was a 60 PSI sender. Checking the NAPA web site both show 80 PSI which may be a mistake on their part. It makes no sense to me to have 2 part numbers 2 digits apart for the same item. That said I would go for the one that ends in 8. If you have to get the other one OP6636 I think I would connect it to say 40 or 60 PSI air pressure and read it's resistance before installing. Then you can prove me right or wrong.
Ken B.
I found this for the 80 psi:
Manufacturer's Part Listing Cross Reference
Competitor Part Number OEM
AC / DELCO / GM 10045777 OEM
AC / DELCO / GM 14040816 OEM
AC / DELCO / GM 14078954 OEM
AC / DELCO / GM 15591103 OEM
AIRTEX 1S6563 aftermarket
AMERICAN MOTORS 8953000834 OEM
BIG A 20-81 aftermarket
BORG WARNER S4012 aftermarket
BORG WARNER S768 aftermarket
ECHLIN OP6638 aftermarket
FILKO OP-109X aftermarket
GENERAL AUTOMOTIVE SPECIALTY 2473 aftermarket
GENERAL AUTOMOTIVE SPECIALTY 24730 aftermarket
GENERAL AUTOMOTIVE SPECIALTY 24731 aftermarket
GENERAL AUTOMOTIVE SPECIALTY OP24731 aftermarket
GP/SORENSEN OPS68 aftermarket
GP/SORENSEN OPS82 aftermarket
KEM PS101 aftermarket
MIGHTY 3-1816 aftermarket
NAPA OP6638 aftermarket
NIEHOFF DR135S aftermarket
NIEHOFF OP24731 aftermarket
SORENSEN PS-150 aftermarket
STANDARD / HYGRADE PS-155 aftermarket
WELLS PS133 aftermarket
Mike K.
'75 PB
Southeast Michigan
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Re: [GMCnet] Oil Pressure Sender [message #331173 is a reply to message #331172] |
Sat, 21 April 2018 05:30 |
Ken Burton
Messages: 10030 Registered: January 2004 Location: Hebron, Indiana
Karma: 10
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Thanks,
That kind of backs up what I was thinking. OP6636 is NOT listed in the interchange list that you posted. Now I really think it is listed wrong on the NAPA web site. I did not check the GMCMI parts interchange it might be correct there. I think that I would not buy the OP6636.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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Re: [GMCnet] Oil Pressure Sender [message #331180 is a reply to message #331173] |
Sat, 21 April 2018 09:42 |
Bruce Hart
Messages: 1501 Registered: October 2011 Location: La Grange, Wyoming
Karma: 5
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Used the GMCI parts book and that is what was printed.
On Sat, Apr 21, 2018 at 4:30 AM, Ken Burton wrote:
> Thanks,
>
> That kind of backs up what I was thinking. OP6636 is NOT listed in the
> interchange list that you posted. Now I really think it is listed wrong
> on
> the NAPA web site. I did not check the GMCMI parts interchange it might
> be correct there. I think that I would not buy the OP6636.
> --
> Ken Burton - N9KB
> 76 Palm Beach
> Hebron, Indiana
>
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--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
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Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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