90 OFH fitting size

[Supa Dexta]

Does anyone know the thread size of the port to the left of the gold nut/cap?

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The one that points towards the ground at 45*, and is that the proper feed port for filtered oil?...

 

[steve]

The one that points towards the ground at 45*, and is that the proper feed port for filtered oil?...

Yes, according to RRE. RRE's Turbo Oil Line Installation Instructions

I can't find the reference to the thread size for the port anymore.

 

[T is for TURBO]

They are all BST...

I just ran a 3/8 NPT tap through mine. along with 1/8 BPT tap for the 2 smalelr ones. worked like a charm.