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Platinum Plugs - Must change timing??

 
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Old 15 Feb 2005, 10:44 pm
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Default Platinum Plugs - Must change timing??

Somewhere I read that if you install platinum plugs you must change the engine timing. The rational was that the spark was impressed farther into the chamber (closer to the piston) and therefore the timing had to be changed.
Anyone know the truth to this question?????

Thanks, Bernie
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Old 15 Feb 2005, 11:11 pm
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uhhhhh no!!! no need to change the timing. i guess maybe you could if you wanted to keep the car running exactly as it was initially. but part of the idea of the platinums is the performance gain.
IMHO of course.
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Old 16 Feb 2005, 01:18 am
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Quote:
quote:Originally posted by bnorth

Somewhere I read that if you install platinum plugs you must change the engine timing. The rational was that the spark was impressed farther into the chamber (closer to the piston) and therefore the timing had to be changed.
Anyone know the truth to this question?????

Thanks, Bernie
No, no, no! Who told you that?? The idea behind platinum plugs is to have a better spark and smoother idle. Besides, whoever told you that failed to mention that you can't adjust the timing; it's controlled by the PCM, unless you go with an independant ignition system. I did read however, that the double platinum plugs are not recommended for the turbos.
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Old 16 Feb 2005, 01:50 am
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Iridium is the latest and greatest material for plugs. And I was told no platinum in turbos period single or double. Copper or Iridium and I went with the later![8)]
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Old 16 Feb 2005, 08:21 am
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Nope - not if you stick with compatible plugs - plugs made for the PT.
The reach is the same, just differs in metal content.
How would you change the timing anyway???
There are some plugs that people put in that aren't made for the PT - I choose not to - the other plugs may have different reach.
Champion makes a platinum plug made for the PT.
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Old 03 Jun 2007, 06:53 pm
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Default Re: Platinum Plugs - Must change timing??

I initially tried platinums in my 03 GT - it seemed the car accelerated faster and I lost 2-3 MPG on both end.

Swithed back to stock and got my mileage back.

I just put Iridiums at 52K - so far they seem to be very smooth. I'll have mileage in a week.
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Old 21 Jul 2007, 12:17 am
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Default Re: Platinum Plugs - Must change timing??

Hi there! New to the forums, but I figured my 2 cents might help. I just changed my plugs a week ago, went from regular Champion copper plugs to NGK Iridiums. I can't say if my mileage went up, but it idles a little smoother and seems to have a tad better pickup. 7 bucks a pop, but think it's worth it. I got them through Summit.
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Old 21 Jul 2007, 08:34 am
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Default Re: Platinum Plugs - Must change timing??

Many of us went to Champion 7440 gapped at .040 and performance wires, I did at 500 miles. Cleared up my "hesitation".

BTW: Welcome to the forum:
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Old 21 Jul 2007, 10:15 pm
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Default Re: Platinum Plugs - Must change timing??

I just did my first tune-up at 20K, installed the crane wires, bosch platinum 4's and a K&N drop in filter. We drove it up to Block Buster and noticed a much improved idle and acceleration. Whole tune-up cost just over a C-note.
Clay and Kimberly
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Last edited by PlumCrazyMonkey; 24 Jul 2007 at 02:29 am.
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