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TR55's pregapped?

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TR55's pregapped?

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Old

Mar 30, 2007 | 04:08 PM

#1

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TR55's pregapped?

I was just wondering if they come gapped?

TIA

Old

Mar 30, 2007 | 04:21 PM

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yea mine came like they should gapped at .55 I think it was, but double check them b/c someone could drop them or something and it could mess the gap up. But generally they do come gapped where you need them

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Mar 30, 2007 | 04:28 PM

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I always double check the gap before they go in

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Mar 30, 2007 | 04:51 PM

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Quote:

Originally Posted by Bandit LS1

I always double check the gap before they go in

Best practice for sure, they usually range from .052-.057 out of the box in my experience.

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Mar 30, 2007 | 05:10 PM

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Mine came out at .044" average today. Went in at .058". Take 5 mins and set them up as you require.

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Mar 30, 2007 | 11:03 PM

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set them any where from .040 -.050 on an bolt-on ls1

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Mar 31, 2007 | 03:28 AM

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TR55s are supposed to be gapped at .055. But as posted above, actual gap is usually a little off.

The rule of thumb, is that no spark plug comes pre-gapped

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Old

Mar 31, 2007 | 02:29 PM

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i think they're supposed to be pre-gapped at .55 but most people run that at .50 (or even less) for mildly bolted on cars. i'm gonna change mine later this spring and will prob set them ~.50

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Old

Mar 31, 2007 | 03:01 PM

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Quote:

Originally Posted by BAD *** TA WS6

TR55s are supposed to be gapped at .055. But as posted above, actual gap is usually a little off.

The rule of thumb, is that no spark plug comes pre-gapped

Seems like I just came across some information that indicates that that has changed. I think they now come in somewhere around .044-.045 due to a manufacturing change.

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Mar 31, 2007 | 04:05 PM

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so, is that where they should be gapped for a bolt on LS1?

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Mar 31, 2007 | 05:14 PM

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Quote:

Originally Posted by MeentSS02

Seems like I just came across some information that indicates that that has changed. I think they now come in somewhere around .044-.045 due to a manufacturing change.

This is very possible. Recently they started producing them with fixed tips on the plugs, no longer screw-on type.

Quote:

Originally Posted by bww3588

so, is that where they should be gapped for a bolt on LS1?

They should be at .050-.055 for a bolton car.

Old

Mar 31, 2007 | 05:17 PM

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Quote:

Originally Posted by BAD *** TA WS6

TR55s are supposed to be gapped at .055. But as posted above, actual gap is usually a little off.

The rule of thumb, is that no spark plug comes pre-gapped

The only ones you can't jack with are iridiums/platinums. It's a good idea to make sure they are all "even" and there's not one made on a monday that got thrown across the spark plug plant. If you find a bad one, take it back and swap it.

If you already knew this, consider it a heads up for others.

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