jofre_69

i need to know the gap needed for ngk tr 55 spark plugs. thanks in advance.

Patches

The factory manual spec is .060". I gapped mine at .057"


Edit: Tightening torque is 11 lb.ft.


[Modified by Patches, 3:43 PM 6/8/2002]

AP

I did the same thing at .058 ...

THamilton

Please clue me in. Why would you use a smaller than recommeded gap?

Thanks.

vettenuts

I have installed two sets of these plugs in two different cars. All of the plugs out of the box were at 0.057. I upped them to the specificed 0.060. In the end, I don't think the 0.003 will make any difference. You may want to just check them as they come out of the box to make sure you don't have a out of tolerance gap and then just install as delivered.

72 LT-1

I gapped at .055 with no problems.