Plug ? /Yes I searched
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From: Corpus Christi Tx
Plug ? /Yes I searched
Found that the gap for NGK TR6 should be 36-38. I just got my plugs. They are #4477, ITR6F13. My L is stock except for Filter and catback. Is 38 a good gap? (Not sure with this plug) Are these the right plugs for my truck? Just want to make sure before I take it apart and ruin something.
Thanks
Dave
Thanks
Dave
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From: Selden NY
I have NEVER heard of ANYONE using that plug
HOLD OFF TILL MORE PEOPLE POST HERE
(or are you saying it's a NGK TR-6, and giving us the SKU # ???? )
Most Common plug used
NGK TR-6 (thats one range cooler than stock)
Others with HIGHER Boost use
NGK BR-7's
"or"
Denso IT 20's around Stock range but considered cooler due to design
Denso IT 22's are cooler than stock (most common used Denso in a L)
Denso IT 24's FOR THE HIGH BOOST L's (thats me : o )
Gap is def ALL OVER the chart based on your Mods
A larger gap is always better WHEN POSSIBLE
But the more boost you have, and the more power you have, and the more cylinder pressure you have, you'll need to close the gap, (otherwise you will experience spark blow out)
I use to run .038 - .040 on 6lbs of pulley (thats considered a large gap)
Most will run .036 - .038 on a 4-6 lb Lightning
As said as you get up in power and boost smaller and smaller you go
I am currently using a .028 gap on IT 24's or BR-7's
HOLD OFF TILL MORE PEOPLE POST HERE
(or are you saying it's a NGK TR-6, and giving us the SKU # ???? )
Most Common plug used
NGK TR-6 (thats one range cooler than stock)
Others with HIGHER Boost use
NGK BR-7's
"or"
Denso IT 20's around Stock range but considered cooler due to design
Denso IT 22's are cooler than stock (most common used Denso in a L)
Denso IT 24's FOR THE HIGH BOOST L's (thats me : o )
Gap is def ALL OVER the chart based on your Mods
A larger gap is always better WHEN POSSIBLE
But the more boost you have, and the more power you have, and the more cylinder pressure you have, you'll need to close the gap, (otherwise you will experience spark blow out)
I use to run .038 - .040 on 6lbs of pulley (thats considered a large gap)
Most will run .036 - .038 on a 4-6 lb Lightning
As said as you get up in power and boost smaller and smaller you go
I am currently using a .028 gap on IT 24's or BR-7's
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From: Corpus Christi Tx
Rob, Thanks for the quick reply. You seem to be the King on Plugs. The plugs are TR6 Iridium is what I'm guessing. Hence the ITR6. I'm not sure about the F13 part. Its all a NGK #. They were rather pricey @13.29 ea from NAPA. They listed this plug for a L. I've never heard of it either
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From: DETROIT, (formerly Eaton County, Michigan)
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From: Corpus Christi Tx
From the chart there is not a gap listed for the TR6IX in stock boost configuration. I'm gonna go with 38 unless someone knows better. Thanks again for all the help guys. I took my bass boat to the lake fishing today and got a whopping 9 mpg. I can't wait to get this thing fixed.
Thanks again
Dave
Thanks again
Dave
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Joined: Oct 2001
Posts: 2,456
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From: SE Mich
On a stock motor I'd go with IT20s gapped at 0.036" Torwue them to 13ft lbs and then check the torque again in about a month. Then just forget about them. Even if you stepped up to a chip/tune and pulley you'll be fine.
Rich
Rich