Hi,
I've bought some new gauges for my Meerkat RV8 which come with 1/8-27 NPT threaded sensors and a few adapters.

None of these fit in place of the standard RV8 senders for oil pressure and coolant temperature and I was hoping that maybe someone could tell me what these threads are so that I can source some adapters.

I've measured the thread on the oil pressure sender using a micrometer with the following results:
Thread diameter 12.515mm (parallel)
Thread pitch 9mm for 7 threads = 1.2857mm or 0.0506"
Thread length 13mm
Across flats of hex head 18.11mm

The coolant sensor is 15.52 thread diameter (parallel) with an 18.15mm across flats of hex head. I've not measured the thread pitch yet but can do if required.

Anyone able to help identify these threads? Engine is 1977 vintage with engine number 10A... if that is important.

Thanks,
Craig.

ps. Planning to source adapter from Think Auto once I know what I need.

Hi

I bought 2 adapters for my gauges...

1/2" UNF
1/4" NPTF

Now I think the 1/2" UNF was oil and the 1/4" NPTF was water but that was 3 years ago and I am a little hazy...

Mark

EDIT: I got both adapters from ETB instruments. The guys were very helpful and knowledgeable when I rang them to find what I needed.

[Edited on 8/6/10 by Paradoxia0]

quote:

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Originally posted by Paradoxia0
Hi

I bought 2 adapters for my gauges...

1/2" UNF
1/4" NPTF

Now I think the 1/2" UNF was oil and the 1/4" NPTF was water but that was 3 years ago and I am a little hazy...

Mark

EDIT: I got both adapters from ETB instruments. The guys were very helpful and knowledgeable when I rang them to find what I needed.

[Edited on 8/6/10 by Paradoxia0]

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