E85 and plugs / gap

[Zacharyx]

Ya just wondering if anybody is running the TR55's yet on E85 since it's a cooler fuel.....

I have see. the tr55 is just a pregapped ( .039) version of the tr5

 

[Jrock909]

Can us E85 users use the hotter TR55 plugs since the intake charge is cooler?

 

[stkjock]

Can us E85 users use the hotter TR55 plugs since the intake charge is cooler?

IMO depends on the amount of boost you'll be running. you don't want too hot of a plug either.

 

[Jrock909]

Ya it's on 20-21lbs of boost, so probably TR6 FTW......!

 

[DHGTerminator]

What's the proper gap for a TR6 at 21lbs of boost?

 

[stkjock]

.026-.028

 

[DHGTerminator]

.026-.028

Thanks!

Out of curiousity. Would there be any pros/cons of using the Iridium version of this same plug? I've heard of people complaining about a miss using the TR6's on lower RPM's, maybe that wouldn't be the case though with e85? I run my car on 91 when I need to get point A to point B, so if I could use the Iridium version and have it run great on 91, then switch tunes and run awesome on e85, that would be a huge win-win for me.