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Old 08-30-2004, 09:15 PM   #1
txl146
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02 WRX VF34
Junior Tuned 301whp

Default OEM sparkplug come pre-gapped from factory?

NGK platinum plugs for 02 WRX come pre-gapped from the factory?
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Old 08-30-2004, 09:19 PM   #2
OneOBS
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All plugs are pre-gapped these days. I sure don't trust them and always double-check the gap. A gauge is what, 50 off the counter at AutoZone? Some multi-electrode plugs are almost impossible to check. All you can really do is give them a good visual check and install them.
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Old 08-30-2004, 09:58 PM   #3
Hondaslayer
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Yes they do some pre-gapped from the factory.

I lost count of how many suby tune-ups I have done, although I will tell you that I stopped checking the gap sometime after 100 without a single mis-gapped plug.
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Old 08-30-2004, 11:27 PM   #4
Uncle Scotty
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I've found that the NGK's are usually pretty much right at .8mm, which is a bit big for my boost....also....you should inspect them for cracked/broken insulators...I got a box of 10 that likely had been dropped and one was broken in the box.
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Old 08-30-2004, 11:32 PM   #5
Hondaslayer
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Quote:
Originally Posted by Uncle Scotty
I've found that the NGK's are usually pretty much right at .8mm, which is a bit big for my boost....also....you should inspect them for cracked/broken insulators...I got a box of 10 that likely had been dropped and one was broken in the box.

Yes I should make a note to my post, I do check them if the boxe's appear damaged, or if they were delivered by CCX (Conway **** up Express)
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Old 08-31-2004, 10:43 AM   #6
Hayes
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Like uncle scotty does, i always check visually each plug AND check the gap. Too much trouble if your tune-up runs less than perfect and you start guessing what could be the problem. A misgapped plug may run better that your old plug but for how long if the gap is 0.010 over spec. ed
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Old 08-31-2004, 01:03 PM   #7
vvk
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Impreza GC8 platinum plugs

As far as I know, platinum spark plugs are not supposed to be checked/gapped. Checking them damages the precious metal layer on the electrodes. The platinum layer may be only a few micron thick and could be damaged by the gap gauge.

Another reason to prefer copper plugs.
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Old 08-31-2004, 11:44 PM   #8
txl146
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just installed them~ car runs great.
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