What gap to use on NGK tr55s?

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Aug 29, 2007 | 08:13 AM

omcar

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From: Pennsylvania

What gap to use on NGK tr55s?

Should I gap at .050 or .055? I use the car (2001 formula with bolt-ons) for street and bracket racing..thanks

Aug 29, 2007 | 08:34 AM

BlackScreaminMachine

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From: Wallingford CT

Either is fine.

Aug 29, 2007 | 10:00 AM

Blacker

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From: Austin, Texas

I have used 0.050" for the last 90,000 miles and works fine.

Aug 29, 2007 | 10:10 AM

Yahelou

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From: Baltimore, MD

have mine at .055. not a big difference between the 2

Aug 29, 2007 | 10:14 AM

BlackScreaminMachine

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From: Wallingford CT

The biggest thing is to have them all be the same. thats bout it.

Aug 29, 2007 | 10:21 AM

5301113

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From: Odessa TX

Factory gap is 0.060 I gapped mine at 0.059

Aug 29, 2007 | 10:39 AM

cowboysfan

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From: Corpus Christi

sure there is more to it then just gapping. what mods are oyu running?

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Aug 29, 2007 | 11:41 AM

omcar

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From: Pennsylvania

Car has a 3,600 stall and 3.73s with lid and pulley. Runs low 12s @110 with a 1.60 60'.
Question, I have 4 years and 9,000 miles on current ngk plugs and taylor wires, is it too soon to change them? I do lots of bracket racing..

Aug 29, 2007 | 07:13 PM

#10

JudgeGuns

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From: Phoenix Arizona

Quote:

Originally Posted by omcar

i always change 'em every 10k miles but....that's just me

tr55 rock! the new iridiums seem to do well also, nitrous and blowers guys luv 'em!

but i luv 2 dollar plugs!

Aug 29, 2007 | 09:31 PM

#11

Ripper415

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i think they say that the more mods/hp you have the lower you need to make the gap right? so if the stock plug gap is .060 and i have just bolt-ons (lt's/ory/cai/lid/ported tb) i should gap mine at what .050?

Aug 30, 2007 | 07:07 AM

#12

Z28/2002

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From: Your girl's back door giving her the long stroke while you're at work

Ripper- anywhere between .050 and .060 and you'll be fine. I had mine at .055 on my cam only Z28. You don't want to go smaller than .050 though and if you are running H/C, spray or some type of other power adder then you'll want to run TR6s