differnece in TR6 spark plugs

[ssms5411]

So I bought some TR6 spark plugs on ebay new, part #4177 just like my old ones. I recieve them and the tips of the plugs are difrferent, they say TR6 on them and are gapped the same but my old plugs have the recessed tip and these are a standard tip. Does anyone know the difference between the 2 and is it safe to run the new plugs without the recessed tip. The only info I could find is the recessed tip is the racing plug, but what really is the difference of the 2? Thanks Steve

[badinfluenceRS]

Re: differnece in TR6 spark plugs

i'm getting some of those...let us know how they work once you get them in

[ssms5411]

Re: differnece in TR6 spark plugs

I already have some but the new ones I bought are different. Old ones have recessed tip, new ones have a standard tip, they both are TR6's , 4177 part #'s. My question is why are they different?

[97rs4life]

Re: differnece in TR6 spark plugs

can you snap a quick pick? I think the last set I put in mine didn't have a recessed tip. As long as the gap is the same and such they should be fine

[ssms5411]

Re: differnece in TR6 spark plugs

I already put them in, I did email the seller and he said he just got the batch from ngk directly just a few weeks ago. He said he was going to give them a call tomorrow. I think they may have change them then. I didn't care for the tips anyway, they would loosen very easy. 97rs4life when did you change yours out? My last ones I put in was last April. Just to let you know if you guys are looking for TR6 plugs I got them for under $13.00 shipped for 6 plugs. Search ebay for ngk TR6 plugs, shipping was also fast.

[97rs4life]

Re: differnece in TR6 spark plugs

I put mine in around april as well when I put my headers in. I get them at the local auto store for 1.50 a piece. Cheap plugs but they get the job done