i was doing my header install yesterday, and im pretty sure that i smacked one of my spark plugs. its got a nice little miss now....
i have the tr55's in it now, should i get another set of those, or swap to a tr6...
or something else?

also, what should i gap them at?

 

I'd run TR6's gapped to .035

You can regap the existing plugs to .035 though if you want.

.035 is the most common gap for FI
.050 - .055 is most common for N/A

 

I run and recommend the TR6's gapped at .035

 

tr6 .035 gap

 

 

Uh....what he said. :-)

 

Yep TR-6's here at .035, works good for me.

 

Not to jack the thread, but what are the TR6s out of the box? I never measured or regapped. Also for Radix application. Thanks.

 

They are set at .035 out of the box, I always check them.

 

Thank you.