vspec glow plug?

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Old 03-16-2010, 12:09 AM
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Default vspec glow plug?

which one do you guys recommend
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Old 03-16-2010, 12:18 AM
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P4
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Old 03-16-2010, 01:04 AM
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The p4 will definatly work but the p3 plug was specificLly designed for that engine. I have used both p3 and p4's in vspecs and they both work fine. My personal preference is the p3 plug. Os engines deserve os plugs sure other brands will work but why questionan engine mfg it's like sticking hotbodies parts on an ae car. Sure some may work but why??
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Old 03-16-2010, 01:04 AM
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The p4 will definatly work but the p3 plug was specificLly designed for that engine. I have used both p3 and p4's in vspecs and they both work fine. My personal preference is the p3 plug. Os engines deserve os plugs sure other brands will work but why questionan engine mfg it's like sticking hotbodies parts on an ae car. Sure some may work but why?? (BTW just an example not to be taken literally)
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Old 03-16-2010, 02:22 AM
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Yup, P3
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Old 03-16-2010, 02:28 AM
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p3 for sure best plug for v spec
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Old 03-16-2010, 02:30 AM
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I have been told that the new Go Engine's T3 plugs (ultra hot plug) are exact copies of the OS P3 plugs and supposed to work the same, however the P3's & P4's have a slightly tapered end to fit perfectly in the OS engines.

My advice would be to stick to P3's as this plug is perfect all round for this engine
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Old 03-16-2010, 02:34 AM
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P3 FO SHO
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Old 03-16-2010, 08:39 AM
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OS P3 OR ODONNELL 97T
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Old 03-16-2010, 08:56 AM
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Os engines deserve os plugs. I have seen too many odonnel plugs come out of the package and oops they don't work. I haven't had that issue with the os plugs. I have used most oftheir turbo plugs p3, p4 & p7. I am sure that odonnel plugs will work but like I said os engines deserve os plugs.
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Old 03-16-2010, 08:56 AM
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P3 or P4
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Old 03-16-2010, 08:59 AM
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Originally Posted by HyperDunley View Post
I have been told that the new Go Engine's T3 plugs (ultra hot plug) are exact copies of the OS P3 plugs

There aren't even in the same Zip Code as a P3. They are more like a P6 in the OS heat range.
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Old 03-16-2010, 09:05 AM
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P3
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Old 03-16-2010, 10:13 AM
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Originally Posted by czarc View Post
OS P3 OR ODONNELL 97T
The taper on the 97T is slightly different than the OS plug, which may result in sealing issues. Besides, the 97T is a medium-hot plug, whereas the P3 is an ultra hot.

I run a P3 in my Speed, but I will likely switch that out to a P4 when it gets to the really hot part of the summer. May not make a huge difference, but I've got one in my pit box to try out.

You can't go wrong with the P3 though. Others have said it....the engine is designed for it, and the P3 is a great all around plug.

Last edited by Stubbs; 03-16-2010 at 10:41 AM. Reason: found a typo.
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Old 03-16-2010, 10:40 AM
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I should of also said some people switch to the P4 in very low alttitudes and very high temperatures. The P3 plug will work everywhere but some people do like the P4 in certain conditions. I know where I live I don't think I will ever need to touch any other plug then a P3.
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