spark plugs

[bigmerc281]

Which work best for our cars. Swaping mine out tomorrow

[MyBlackBeasts]

Which work best for our cars. Swaping mine out tomorrow

I just replaced the OEM which only had 34k on them & were still in gap. Installed the new Bosch Iridium Finewires and am very pleased with them. Snappier starts and throttle response.

Don't forget to coat the new plug's threads (very light, thin coat) with anti-sieze to prevent the plugs from seizing in the heads and sucombing to "blown out plug" syndrome. :)

[whitey]

i just did mine yesterday, if youre car is pretty stock, use the stock motorcraft replacement....which is now an autolite AP104, owner manual says: .052"-.056" gap, i gapped mine at .054", had 23,000 miles on the other ones, and the new ones feel more responsive. and like ^^^he said^^^, use anti-seize lube on the threads, and change them on a cool/cold engine.

[DOOM]

Still using motorcraft plugs. :up:

[ctrlraven]

i just did mine yesterday, if youre car is pretty stock, use the stock motorcraft replacement....which is now an autolite AP104, owner manual says: .052"-.056" gap, i gapped mine at .054", had 23,000 miles on the other ones, and the new ones feel more responsive. and like ^^^he said^^^, use anti-seize lube on the threads, and change them on a cool/cold engine.
^This.

If you have a tune then talk to the tuner who created the tune for you and see what they recommend for your specific tune.

[dohc324ci]

Motorcraft or NGK TR55 should work fine. I use NGK TR6s for my setup now; tuner recommended so those went in.

[ctrlraven]

Motorcraft or NGK TR55 should work fine. I use NGK TR6s for my setup now; tuner recommended so those went in.

I run TR6 plugs as well. :P

[fastblackmerc]

TR6's are a good replacement for the stock plugs.

I always gap the plugs at the LOW end, in this case .052. This way as they wear the will still be in "range".

Always change plugs when the engine in cold.

Blow out and debris in the spark plug chambers.

After gapping the plugs correctly, use a very small amount of antisieze on the threads of the plugs.

Torque to 12 ft/lbs.

Put a dab of silicone dielectric grease on the end of the spark plug boot before installing on the plug.

Put a dab on silicone on the cutout at the rear of the coil cover to maintain the seal.

Changing plugs is an easy job that should be done once a year. Plugs are cheap and it should take about 45 minutes to do.... cheap insurance. Another plus is you can "read" the plugs.

[babbage]

tr6 gapped to factory specs. change every year or two as they are so cheap.