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ET heads & Spark plug selection...

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Old Mar 31, 2006 | 12:25 PM
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Default ET heads & Spark plug selection...

We're trying to find some good solutions for spark plugs with the ET heads. It seems like there are more than a few people that can benefit from this information. The ET heads need a...
14mm Thread
3/4" Reach
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Old Mar 31, 2006 | 01:06 PM
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they will actually take a tapered seat stock plug, but we reccommend using a gasketed seat plug. NGK has a ton of selection for that design.
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Old Mar 31, 2006 | 01:15 PM
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Can you give us an NGK plug number or 2? Looking for something that will work with a 12.8:1 compression 347.
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Old Mar 31, 2006 | 01:28 PM
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Yeah, and a selection for a 12:1 comp 408 as well please
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Old Mar 31, 2006 | 01:39 PM
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Cary, a selection of part numbers for these plugs that your talking about would be good. Something comparable to the TR 5, 55, 6, and 7's would cover 90% of the people who buy your heads. Thanks, Jason
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Old Mar 31, 2006 | 01:57 PM
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TR6 replacement??

NGK 3696 BKR6EY
14mm, 3/4" reach, 5/8" hex, gasket seat, resistor, ISO length, projected tip, V-power (v-grooved center electrode)


Thread Size: 14mm
Seat: gasket
Reach: 19mm (3/4")
Hex: 5/8" (16mm)
Terminal Type: Solid
Resistor: yes
Gap:
Heat Range: 6

Last edited by Phil99vette; Mar 31, 2006 at 02:08 PM.
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Old Mar 31, 2006 | 02:00 PM
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TR-6IX Replacement??

NGK 3678 IFR6L-11
Iridium plug, 14mm, 3/4" reach, 5/8" hex, gasket seat, resistor, projected tip, extremely long life plug, iridium center electrode with platinum tipped ground electrode, .044"gap


Thread Size: 14mm
Seat: gasket
Reach: 19mm (3/4")
Hex: 5/8" (16mm)
Terminal Type:
Resistor: yes
Gap: .044" (1.1mm)
Heat Range: 6

Last edited by Phil99vette; Mar 31, 2006 at 02:09 PM.
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Old Mar 31, 2006 | 02:03 PM
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BP7EFS Replacement??

NGK IX iridium 6988 BKR7EIX-11 .044" (1.1mm)
Iridium IX plug, 14mm, 3/4" reach, 5/8" hex, gasket seat, resistor, ISO length, projected tip, fine wire (0.6mm) iridium center electrode, tapered cut ground electrode, .044" gap


Thread Size: 14mm
Seat: gasket
Reach: 19mm (3/4")
Hex: 5/8" (16mm)
Terminal Type: Solid
Resistor: yes
Gap: .044" (1.1mm)
Heat Range: 7

Last edited by Phil99vette; Mar 31, 2006 at 02:09 PM.
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Old Mar 31, 2006 | 02:04 PM
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NGK Traditional spark plug 1283 BKR7E-11 .044" (1.1mm)
14mm, 3/4" reach, 5/8" hex, gasket seat, resistor, ISO length, projected tip, V-power (v-grooved center electrode), .044" gap


Thread Size: 14mm
Seat: gasket
Reach: 19mm (3/4")
Hex: 5/8" (16mm)
Terminal Type: Solid
Resistor: yes
Gap: .044" (1.1mm)
Heat Range: 7
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Old Mar 31, 2006 | 02:05 PM
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So Phil, can we expect to see some dyno numbers or track numbers after you get the plug issues resolved or are you still waiting on other squirrel mods?
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Old Mar 31, 2006 | 02:25 PM
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OK Phil,
What is wrong with running a TR6 that I used in my stock LS1 heads?
Is it to short?
That is what I am running now.
Boy it sound like I really missed something here.
Bob
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Old Mar 31, 2006 | 02:54 PM
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Originally Posted by Patrick G
So Phil, can we expect to see some dyno numbers or track numbers after you get the plug issues resolved or are you still waiting on other squirrel mods?
We've already got preliminary numbers and they are on target. Car needs more tuning and break-in time, this was with less than 200 miles on the clock. Dyno numbers && Flow numbers will be disclosed when a few issues are cleared up and we have MPH and ET data to go along with it.
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Old Mar 31, 2006 | 07:30 PM
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Originally Posted by SlickVert
OK Phil,
What is wrong with running a TR6 that I used in my stock LS1 heads?
Is it to short?
That is what I am running now.
Boy it sound like I really missed something here.
Bob
This is the first I've heard about the plugs. What is the problem you guys are running into?
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Old Mar 31, 2006 | 09:24 PM
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I ran straight TR6's with my ET heads.
No problems at all.
The stock wires however aren't long enough and you have to pull the pointless end out for the wire to fit in the heads hole.
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Old Mar 31, 2006 | 10:16 PM
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We have ran:
TR55 - too hot
TR6 - seems to be better
BP7EFS - runs great

Apparently the LS1 style plug is too short, not sure how much difference it makes but time will tell.
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Old Apr 1, 2006 | 01:44 AM
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What is the difference with the BP7EFS and TR6. Is the BP7EFS a colder plug?
What plug would you recommend on a street car that will be at about 11.8:1, with possibly a 150 shot in the future?
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Old Apr 1, 2006 | 08:21 AM
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The 7 is a colder plug, you may be able to get away with a TR6 but probably need a BP7EFS.
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