Tr6 spark plug gap?
Thread Starter
Supporting Vendor
Joined: Jul 2010
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From: Republic of Texas
Tr6 spark plug gap?
Just got in my NGK Tr6 4177 plugs for my supercharged 97. I think i remember reading that the cardboard tube on the ends means they're pre-gapped, but I don't remember.
I'm running a 6-7psi system. What should my gap be?
thanks.
I'm running a 6-7psi system. What should my gap be?
thanks.
Thread Starter
Supporting Vendor
Joined: Jul 2010
Posts: 8,550
Likes: 903
From: Republic of Texas
Checked mine at .035" They're all good.
....the Ac Delco I pulled out were closer to .050"
As soon as I correct my PCV setup, I'll get a street tune to accommodate the new pulley and I'll be good to roll.
....the Ac Delco I pulled out were closer to .050"
As soon as I correct my PCV setup, I'll get a street tune to accommodate the new pulley and I'll be good to roll.
Le Mans Master
Joined: Jul 2010
Posts: 6,013
Likes: 726
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Thread Starter
Supporting Vendor
Joined: Jul 2010
Posts: 8,550
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From: Republic of Texas
I ordered 3 types of 3/8" check valves from Mcmaster.com and will see which one does the job the best. The good news is they're relatively cheap with the most expensive one being $14
Melting Slicks
Joined: Jul 2007
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From: Simpsonville SC
St. Jude Donor '09-'10
Mine are also gapped at .035, but at my last tune, my tuner told me the spark plugs were being blown out around 6500 RPM and 10 PSI of boost. He recommend I re-gap them to .030. I will do that next time I pull them out.
