Spark Plug Gap

[starfireS14]

Im getting new plugs which ones should I get and what to gap them at my car is at 8 psi I have HKS 2540 Turbo Upgrade with FMIC everything else is pretty stock.

[Phax]

I'm using Bosch F5DTC's. They are OEM in most turbo Porsche's. They come gapped at .028.

[SRdave240]

how much HP are you running?I use NGK BKR6e gapped to about 0.025"You might want 7e's if you are running 300+hp.

[starfireS14]

Im not at 300hp yet car is pretty much stock except for HKS 2540 Turbo set at 8psi.

[gtune4]

0.29 for me. ngk standard. running 0.72 boost. took plugs out yesterday to do a (sucsessful) compression check and they looked better than ever. no carbon build up hardly.

[Sircnay]

What's a good spark plug under $10 a piece for the SR? I'm going to be doing a tune-up soon and I kind of want things to go smoothly.

[91 240]

NGK BKR7E, #6970 or #6790. Dont remember of hand.At NAPA for $1.99/each. gapped at .028-.033. For me personally.

Avery

[Tai Mai Shu]

BCPR6E-11

[Movingviolation240]

NKG 7's are good for higher boost (14psi and up) otherwise stick with the 6's. For gap I run .32 but I've seen high boost (like 30psi) need a gap of like .20. Run the most gap you can get without having misfire issues, it will make your idle cleaner and startup easier.

PaulOrlando, FL

[Sircnay]

Ugh, the guy gave me 5E's will these still work?

[gtune4]

in the s14 manual, the plugs are pfr5b-9 pfr6b-9 and pfr7b-9-8 would be .32gap and -9 is .36these are platinum plugs, and the 5,6,7 are heat ranges5 apparently is no good for boosti am going with 6 or 7heat range 8 hks plugs got all fouled up in my motor. not enough heat

ps. please ignore my earlier comment. i have no idea what i was thinking:thinker

[S13240]

I run heat range 5 ngk copper plugs all the time and my car runs and boosts as well as when I'm using heat range 6.

[gtune4]

sounds greatthe colder plugs are to eliminate hot spots in the chamber