Cessna 120-140 Association

I don't have my records on hand and need to order a filter to change during the annual. Does anyone have the PN?

Also I was thinking about swapping my plugs out during the annual just for GP. Any recommendations?

Thanks

Joe

From what I have written down with mine the filter is assembly is BA-4106 and the element is BA-4108.

As far as spark plugs go, I have a brand new set of champion in mine and they have been great so far.

Champions or the Unison/Autolite equivalents (Put a "U" in front of the Champion number.) (U)REM40E, IIRC.

Anyone have any experience with the Tempest plugs that ACS sells?

I like the Tempest UREM-40E.

Thanks Randy, they are about $10 (CDN) cheaper than the Champion. I think I will give them a try.

Actually, Tempest is now the owner of the old Autolite line. I wouldn't have any reservations about using them.

Champion had some resistor issues a few years back, supposedly they’ve corrected it now but they never publicly acknowledged it. Tempest’s resistor design isn’t prone to failure (high resistance) like the Champions. I really like Tempest’s massive electrode, UREM37BY version, they help prevent lead fouling. But you need to make sure your harness can accept them. I had to swap my plug wires out to work, but they were due anyways.

Good to hear all the positive remarks about Tempest, I have a considerable RPM drop difference on one side so thought I should start with plugs, will go with the Tempest.

Thanks

I would not throw a new set of plugs at it without first determining if the plugs are the problem... Pull them out, inspect them, clean and test them if they look good, rotate them and go from there.