Vauxhall drysump plumbing

[harry b]

Hi,
I have a slight problem identifying a thread used for the suction opening on the integrated oiltank in the bellhousing.

I measured the eaton connector, which has an outside diameter of the thread of 20.07 mm with 14G.

Anybody got a clue? couldn't find anything. Closest thing was a NPT 1/2" 14G pipe tread, but
problem is that NPT is conical, and that couldn't be because the eaton connector is straight tread with an oil ring seal.

[russelli]

this is listed on the caterham online store
http://www.caterhamparts.co.uk/product.php?id_prod...
think this may be BSP parrallel otherwise possibly JIC as a lot of oil equipment has this US thread

[harry b]

Thanks, found a 1/2" piping elbow in the garage, and the eaton fitted.
So concluding it's a NPTS 1/2" thread.
A bit weird, because normally one would use a NPT 1/2" male thread, because the NPTS doesn't seal, there for the oilring.