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Spark Plugs what do you gap your's at?

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Old 02-06-2007, 08:40 AM
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Spark Plugs what do you gap your's at?
I have a set on NGK TR55'S what are you guy's gapping at stock ?
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Old 02-06-2007, 08:56 AM
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The books says .050, Im running .035
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Old 02-06-2007, 09:07 AM
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I ordered some NGK TR55's as well.. what do they come gapped at?
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Old 02-06-2007, 09:15 AM
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I think the rule of thumb is close it down .010 for every 100 HP added, open it back up .005 for an added ignition system. I'm running my 350 RWHP setup at .045 and not having any issues.
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Old 02-06-2007, 10:08 AM
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TR55's should come pregapped at .050; always verify the gap before installing plugs. For a stock setup, leave your gap at .050
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Old 02-06-2007, 11:57 AM
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I gapped mine at what the underhood sticker recommends: .050"
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Old 02-06-2007, 12:18 PM
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.050 always. But msd helps bridge the gap for me.
Last edited by oneslowz28; 02-07-2007 at 03:38 AM.
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Old 02-06-2007, 12:50 PM
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Originally Posted by oneslowz28
.50 always. But msd helps bridge the gap for me.
I think you're missing a zero somewhere in there. Mine are gapped at 0.050, as indicated under the hood and in the owners manual.
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Old 02-07-2007, 03:37 AM
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Originally Posted by MysticTeal95Z28
I think you're missing a zero somewhere in there. Mine are gapped at 0.050, as indicated under the hood and in the owners manual.
yea I missed a zero. Thats what I get for not previewing my post.
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Old 02-07-2007, 03:57 PM
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Run them at .035--- it will save your opti.
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Old 02-07-2007, 04:07 PM
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You can run them without the electrodes if you want to, but the recommendation is .050 for n/a application.
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Old 02-07-2007, 04:10 PM
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.035" here.
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Old 02-07-2007, 04:11 PM
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.050 here.
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Old 02-07-2007, 04:32 PM
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.050

Make sure to look at every plug as some of my new tr55s were slightly off the .050 mark.
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Old 02-07-2007, 04:36 PM
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Ive been running TR55s at .050 but switched to Autolite 104s gapped at .035 and picked a few MPGs.
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