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Old 11-15-2008, 10:36 PM   #31
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You can get indexing washers from Summit Racing Equipment. www.summitracing.com
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Old 12-08-2008, 05:38 PM   #32
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ZPILOTO, did you ever index your plugs? How did it go?
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Old 12-08-2008, 09:46 PM   #33
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I tried almost every plug on the market over the last 15 yrs or so. I haven't found anything that comes close to the performance of Halo spark plugs. I've used them in all my cars for the last 3 years.
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Old 12-09-2008, 07:11 AM   #34
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Quote:
Originally Posted by jglassey2 View Post
I tried almost every plug on the market over the last 15 yrs or so. I haven't found anything that comes close to the performance of Halo spark plugs. I've used them in all my cars for the last 3 years.
Where do you even find those?
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Old 08-12-2009, 10:45 PM   #35
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The Doctors Step-By-Step Guide To
OPTIMIZING YOUR IGNITION

By Dr. Christopher A Jacobs, PhD., E.E.
00000000000000000000000000000000000000000000000000 0000000000000000

Here is a basic explaination:

1. The ideal position of the plug is such that the gap is facing towards the valves, preferably the exhaust valve.


2. The object of indexing is to avoid this problem: when this plug fires the spark is directed towards the chamber wall, rather than the center of the combustion chamber.
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Old 08-13-2009, 01:45 AM   #36
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yes to the exaust is the best for performance ,,,MPG ,,i'm learning
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Old 08-13-2009, 05:42 AM   #37
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I'm not so sure about that positioning for Wile-E, since the plug comes in closer to the horizontal, it seems like it will "trap" the spark against the top of the head... whereas turned the "wrong" way it points more to the center of the combustion space (bearing in mind the piston is still coming up when it fires.)
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Old 08-14-2009, 12:31 AM   #38
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i try to index to the ex. valve
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Old 08-14-2009, 01:20 AM   #39
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Have any of ya tried Pulstar plugs? They're ridiculously expensive.

One of my friends bought them at full price for his 96? Explorer... just talked to him and he said his trip computer didn't report any gain in MPG, but he noticed a lot more low-end torque.

Right now I have Bosch Platinum+2 plugs in my car. It seemed to revive it's performance some, comparable to 4 years ago... not much as far as gas mileage tho. I'm definitely satisfied with these, but am just ever-so curious about those pulstar plugs.

Edit: Also... could you somehow increase gas mileage by upgrading/changing the Ignition Coil pack?... There's "performance" ones... didn't know if there's something that'd work to save gas too.
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Old 08-14-2009, 07:19 AM   #40
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Before everyone goes out and buys indexing washers, make sure your car uses gasket seat plugs. You can't index tapered seat!

Tapered seat engines include most Fords, late model Mazdas, pretty much every GM engine made since the mid 60s, and some Chrysler vehicles after 1990(most after 2000).

If it is an import you are usually safe in assuming gasket seat.
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