lilredridinghoo
Well-Known Member
hi fellows, after driving the 5.2 Magnum SBM in my Barracuda for a while now i cld manage to install an AFR Reading Gauge
AFR is reading between 12,4 and 14,2 as an average overall (has a short lean spot when accelerating 1/100 of a second will jump to 16-17 AFR and the go back to 11 AFR - which i guess can be adjusted by fine tunning the pump squirt)
but my questions are going to spark plug reading
after some test drives i pulled the plug and looks pretty good - beside the 3 little spots on the porcelain(unfort. only 2 visible in the pic)
refering to that spark plug reading sheet it cld. be a indication for a too hot spark plug.
(ignition is set at 18° initial at idle and 34° total all out (limiter plate 16° advance); all out is reached at 2400 RPM; no vacuum hooked up; rev-n-nator ignition box; no piniging or knocking; spark plugs are NGK FR5-1 which is the standard plug for Magnum engines)
AFR is reading between 12,4 and 14,2 as an average overall (has a short lean spot when accelerating 1/100 of a second will jump to 16-17 AFR and the go back to 11 AFR - which i guess can be adjusted by fine tunning the pump squirt)
but my questions are going to spark plug reading
after some test drives i pulled the plug and looks pretty good - beside the 3 little spots on the porcelain(unfort. only 2 visible in the pic)
refering to that spark plug reading sheet it cld. be a indication for a too hot spark plug.
(ignition is set at 18° initial at idle and 34° total all out (limiter plate 16° advance); all out is reached at 2400 RPM; no vacuum hooked up; rev-n-nator ignition box; no piniging or knocking; spark plugs are NGK FR5-1 which is the standard plug for Magnum engines)
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