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oil drain plug and oil pressure switch thread sizes 850

posted by  jean-philippe gauthier on  Thu Jul 19 10:16 CST 2007
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last visit: Thu Oct 1 14:55 CST 2009
[RELATED]

if you want to install an oil temp gauge and oil pressure gauge on your 5cyl you will face one problem: the threads on the engine oil pressure hole and the oil drain pan are METRIC.

here are the specs: drain plug: 18mm metric straight thread
Pressure switch: 14mm metric x 1.5 straight thread

Remember straight thread fittings need a crush washer to be oil tight.

I used AutoMeter Metric adaptor 2267 for my oil pressure sender

I did not find any adaptor for the oil pan plug so I bought a plug from the dealer and made it tapped to the right size (1/8 NPT for my sender) at a local machine shop for 10 dollars cash.

I thought it was a relevant information for all of you since this information doesn appear to ha been posted before.

jp







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