tr 555

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01-14-2004, 04:19 PM

besz28

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Join Date: Jun 2002

Location: hudson,florida

Posts: 721

tr 555

hello i got 1 stage cooler spark plugs i think tr 555 or something like that what do these need to be gapped at? thanks

01-14-2004, 04:37 PM

Fastbird93

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Join Date: Mar 2002

Location: Waynesboro, PA

Posts: 4,827

One stage colder would be the NGK TR-6. If you got the NGK TR-55 then you're in the stock heat range. Manual calls for a stock gap of .050 I believe.

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