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Pinto oil pressure and water temperature sender threads
andyharding - 9/3/05 at 07:39 PM

I'm planning to order a set of gauges from greengauges.com.

The water temperature sendor is available with a NPT or UNF thread. What type of thread is in the Pinto head?

The oil pressure sender is only available with a NPT thread. Is this the same as the oil pressure switch on the Pinto block?

Thanks in advance.

alan wheeldon - 9/3/05 at 08:25 PM

im pertty shure its a 5/8" UNF one u need for the head

britishtrident - 9/3/05 at 08:32 PM

Seem to recall some ntp thread sizes are the same tpi, dia and form as a unf thread but that most ntp threads on cars are ntpt --- ntp tapered.

britishtrident - 9/3/05 at 08:46 PM

re last post my memory is playing tricks for pipe thread ID see this url http://www.eldonjames.com/frames/thread.html

James - 10/3/05 at 08:07 AM

Sorry for hi-jack but just out of interest- why'd Ford use an unusual (ie. non-metric) thread?

Only reason I can think of would be that the NPT is fine enough to stop leaks that would occur with metric- but experience tells me that metric is ok for that!

Thanks,
James

britishtrident - 10/3/05 at 08:34 AM

Pipe threads have always been an area where imperial/us threads are the norm.

David Jenkins - 10/3/05 at 08:37 AM

NPT requires some form of sealant to be 100% water-tight. NPTF is self-sealing (the thread is designed to distort when tightened, filling the gaps).

I bet Fords used the cheaper NPT though!

David

quote:
Originally posted by James
Sorry for hi-jack but just out of interest- why'd Ford use an unusual (ie. non-metric) thread?

Only reason I can think of would be that the NPT is fine enough to stop leaks that would occur with metric- but experience tells me that metric is ok for that!

Thanks,
James

NS Dev - 10/3/05 at 11:27 AM

quote:
Originally posted by James
Sorry for hi-jack but just out of interest- why'd Ford use an unusual (ie. non-metric) thread?

Only reason I can think of would be that the NPT is fine enough to stop leaks that would occur with metric- but experience tells me that metric is ok for that!

Thanks,
James


these threads are not unusual, very standard for fluid connection purposes.

andyharding - 10/3/05 at 11:32 AM

Thanks for your help guys.

My conclusions are as follows:

The water temperature sender thread is 1/8 NPT.

The oil pressure sender thread is 1/4 NPT.

GreenGauges.com will supply the required adapters FOC if you order their senders with your gauges.

stevebubs - 10/3/05 at 08:42 PM

quote:
Originally posted by andyharding
Thanks for your help guys.

My conclusions are as follows:

The water temperature sender thread is 1/8 NPT.

The oil pressure sender thread is 1/4 NPT.

GreenGauges.com will supply the required adapters FOC if you order their senders with your gauges.


This is the same as the Crossflow and early zetecs so would make sense.