oil pressure sending unit differences?

[Meeky Moose]

any difference in an ea81 oil pressure sending unit and an ea82?

 

i stuck a new one i had sittin on my shelf for an ea81 on my ea82T that i stuck in the RX.. guage reads fine (around 50 at 2k rpms)

 

but i was curious as to any differences.. to me the original one on the old engine and the ea81 sending units looks the same.. same threads and all, lol..

[archemitis]

the sending units for the guages ea81 and ea82, that have the small threaded nipple, all send the same ohm, current, whatever. i have an ea82 in my ea81 car, and it sits right where the mechanical guage sits.

i guess the only ones that are different are the ones with the big threads, almost as big as my thumb, are for dummy lights, or maybe digi dashes, since i have never had either one, im not sure.

 

as far as my experience, if it fits, and its off a subaru, it works.

[edrach]

Odd, I had the sender in my '84 Brat fail recently. Couldn't find an EA81 unit in the yard so I bought one from an EA82. It works; but I have 75 PSI at all times even at idle. Most likely I got a flakey unit because I see no reason for them to be different for the two engine types.

[subaguy]

My oil pressure went way down. Bought a new sending unit and it still is the same. Am not having any engine problems. I think there is something else (ohms, etc). This is a 1988 subaru ohv engine. Am going to do further checking (wiring)

[subiemech85]

since you have the electrical guage, install a manual guage

http://www.ultimatesubaru.org/forum/showthread.php?s=&threadid=12912&highlight=guage

found out the elec guage lies

[subaguy]

Thanks for the info. Will try some of these ideas.