Super tuning car runs good shooting for great

skep419 said

Bring this thread back from the dead.

Didn’t read through everything but found two rod caps swapped causing an out of round situation which caused the rod bearing failures.

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Unusual IMHO.... most of the time if caps get swapped, the offset is large enough to either lock the crank or at least make it hard to turn. I always spin the crank by hand after installing the mains to feel for any irregularities, or with a small wrench after each rod is installed, to try to detect anything unusual like that.

Yes, AFR's make life so much easier! There are a few tricky times, like during warm-up, where it will give false readings.

Skep, the loading up.... is that showing on the plugs? For plain low speed cruising like that, the AFR ought NOT to be at 13:1 but up in the 15:1 range for light cruising.