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Can anyone tell me whether the orignal oil pressure gauge installed with an Atomic 4 in a Mark III was a Stewart Warner unit? If not, what? Thanks.
Ken Pole
Santiva
Ottawa
Ken Pole, Ottawa
1975 Mark III Santiva
Offline
This quotation taken from <A href="http://www3.bc.sympatico.ca/Atomic_4_Eng_Service/index.htm">http://www3.bc.sympatico.ca/Atomic_4_Eng_Service/index.htm</A> may not directly answer your question, but you might find it interesting, useful and all around full of good information.
Fred
How do I pick the right gauge and gauge sender?
Most electrical gauges except voltmeters and ammeters work in tandem with a variable resistance gauge sender. In order for the gauge to read correctly, the sender has to be matched to the gauge. There is no industry standard gauge sender resistance, and each manufacturer uses their own specification and design, so gauges and gauge senders from different manufactures usually are not compatible. As well, each manufacturer makes different resistance gauge senders for boats with single station controls and for boats with dual station controls (1 sender connected to 2 gauges) which cannot be interchanged. The wrong sender can instantly destroy a new gauge, or fail to warn the operator of an engine problem. For those reasons it is recommended that oil pressure, water temperature, exhaust temperature, manifold vacuum, fuel pressure, water pressure, etc. gauge senders be replaced at the same time gauges are replaced.
Cheap gauges usually work OK for a while, but are usually are not properly designed to withstand the vibration and corrosion inherent in marine use and break just when they're needed. The flimsy mounting systems on cheap gauges usually cause more lost time than was saved in not buying a quality product too, as well as causing a lot of problems with loose gauges and wires. For those reasons, and more, we only sell Stewart Warner (SW) marine gauges and senders, because we find that their initial higher cost is more than compensated for by their faster installation, reliability and accuracy.
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