blueyes

g'day all,

i have 2 different oil sender units. one has a larger hole than the other. anyone know the correct one for a cleveland? and does the hole size make a difference to the oil pressure reading? i'm asking because the one i currently have fitted (the larger hole) is slighty leaking and i might need to replace it if a tighten doesn't fix the leak..

the hole size is quite noticable. one is like a pin hole, the other you could almost fit a small screw driver into.

cheers,
-tony.

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tony's garage

xbgs351

Small holes or snubbers for pressure gauges are to prevent damage caused by sudden pressure changes. The hole size makes no difference to the output.

Where is the sender leaking from? What did you use on the thread? Non hardening gasket cement?

blueyes

i put in the unit with the smaller hole, my guage (although probably not very accurate) shot up to 50 psi then slowly moved all the way up to 100.

stuck the old unit back on (with it's larger hole) and the guage sat at about 50.

it was leaking from the thread, so it probably wasn't tight on in the first place. put some extra pcv tape on and i'll check it again soon..

just a bit worried that one of them is giving me a false reading

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tony's garage

HIGH PORT

If you have the standard type guage that may be your problem you really need a autometer guage or similiar which will give you a real reading those standard ford guages are junk.

blueyes

that's very true. i'm going to try one of those mechanical guages..

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tony's garage

xbgs351

Are the mechanical gauges liquid filled? If they aren't the vibrations will kill them in no time.