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Old Jun 13, 2007 | 05:27 PM
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Lightbulb spark plug

Hello chap

What Spark plugs do I use if I am pushing between 350hp and 400hp ?
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Old Jun 13, 2007 | 05:49 PM
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You should be fine with PFR7B's
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Old Jun 13, 2007 | 05:57 PM
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Question spark plug

Who makes the spark plug

Last edited by magicseven; Jun 13, 2007 at 06:04 PM.
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Old Jun 13, 2007 | 09:53 PM
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NGK

Sorry to hijack, but would these be ok if you've got a 2.5 conversion?

Thanks!!
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Old Jun 13, 2007 | 10:14 PM
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Default Plugs

What power will you be pushing with the 2.5 lump?
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Old Jun 14, 2007 | 02:22 PM
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not much, just 320 bhp, 240 lb/ft... Thanks
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Old Jun 14, 2007 | 08:17 PM
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I use to use prf7b's but now use an Autolite 3934 which is a none protruded plain copper racing plug with an ngk heat range of 8.

Cheaper and better IMO

This is on a 2.5 at about 390 odd hp.
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Old Jun 14, 2007 | 09:20 PM
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hmm nice one, thanks for your advice, i might give them a go

Cheers!
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Old Jun 14, 2007 | 09:51 PM
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use hks or blitz, abit pricey but well worth the money.
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Old Jun 17, 2007 | 07:52 PM
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so does the car drive better or differently with these? can you tell the difference?
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Old Jun 17, 2007 | 07:58 PM
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so does the car drive better or differently with these? can you tell the difference?
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Old Jun 28, 2007 | 10:05 PM
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i guess you can't tell the difference then..
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