O2 Sensor spacer plates???
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Take the standard double curved risers and drill them out and weld in a 18MM stainless bung you can buy from any Napa house. They must be welded inside and outside to seal the water jacket passage.
I also would not recommend running the O2's continuously in place as the steam and water vapor will eventually turn them to rusty toast. When you buy the bungs, buy the associated stainless 18MM plug and remove the O2;'s after you've done your measurements and recalibrations.
Best Regards,
Ray @ Raylar
I also would not recommend running the O2's continuously in place as the steam and water vapor will eventually turn them to rusty toast. When you buy the bungs, buy the associated stainless 18MM plug and remove the O2;'s after you've done your measurements and recalibrations.
Best Regards,
Ray @ Raylar
#16

I know this is somewhat of an old thread but I've been running the WAGs spacer for three years now with no issues. I run the AFR gauge full time (gauge mounted in boat). Spacer works fine and O2 sensor still works. No rust etc....