Anyone know the thread size of the exhaust test ports?

12mm perhaps?

The O2 sensor is M18.

I'm hoping to use a couple of the units below for dual-cylinder wideband logging.

BK

I do not know of the top of my head but if you contact the folks at www.bridgeanalyzers.com/
they do make adapters that work well so they must have the size.

Quote from: ducvet on November 25, 2008, 02:27:32 PM
I do not know of the top of my head but if you contact the folks at www.bridgeanalyzers.com/
they do make adapters that work well so they must have the size.

I got home and confirmed the size:  M10x1.0

No go on my pictured adapter.

BK

10x 1.0 is close but not exact FYI

I believe it is tapered pipe thread as well. I have re-tapped them to 10x 1.0 and have had no issues yet ......

I think it is a Brittish Standard tapered pipe thread, 1/8" 27 threads per inch.  Don't let the 1/8" fool you, just remember Whitworth.  The diameter is just shy of 10mm.  Certainly close enough to run a 10mm. tap through.

I always thought it was strange that there is no metric pipe thread, they adopted BSP.

Quote from: Capo on November 29, 2008, 01:04:20 AM
I always thought it was strange that there is no metric pipe thread, they adopted BSP.

Seems to be the international standard.

Thanks for the clarification!  I eye-balled the fitting against my tap/die kit, but obviously it was not a perfect match.  Good to know...

BK