Does anyone know the O2 bung size? Im going to get one today to have welded on to my test pipe I beleive its 18mm not sure though. Thanks

 

M18 X 1.5 is the thread size. It should be welded on between 10 degrees and 80 degrees above horizontal. This is not vertical not horizontal, and not anywhere on the bottom half of the pipe.

Regards,
BigMoose


[Modified by BigMoose, 12:38 PM 8/30/2002]

 

Thanks I found out today the size from parks auto. I installed DC JDM 4-1 and test pipe today nice HP improvement.