Racepak O2 sensor

[gmonde]

Originally Posted by Willyracer

Have added a single O2 sensor to a racepak sportmans unit.
It is mounted on the collector just after merge.
Running a BBC on C12. I know location is not the prime
Spot.

I am only taking values above 6000 for comparison since
The sensor is in the collector.
The "lowest" reading I very see is 13.8 and that is only in
High gear at higher rpm
What values should I see and does the motor load effect
The AF value. The 13.8 is lean correct? But plugs look
Ok. Haven't tried bigger jets let but will soon now tracks are
Opening up

Thanks
David

i have my o2,s in the collectors just at the merg and i shoot for the 13.50 in high gear @ 6000-7000 rpm ,off the line it drops to 11.0 past the 60' it climbs to11.50 -12.00,, collector readings will read leaner ,,eventually i plan to move up steam in to the leaner cylinders on each bank ,but its just a number to help you find your direction,, checking plugs will give you the best data