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Old 09-01-2006, 08:14 PM
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HSSS427 HSSS427 is offline
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Join Date: Jul 2004
Location: Alpharetta, GA
Cobra Make, Engine: ERA #414 427 s/o w. Shelby Aluminum heads, Edelbrock Performer RPM Intake, Mighty Demon 750, Tremec TKO 600
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I called the tech line at NGK and they recommended 2 plugs:
V-Power Line: BKR6E-11 stock #2756
Iridium IX Line: BKR6EIX-11 stock # 3764 or BKR7EIX - 11 if I need one cooler

I went with the Iridium IX in the 6 temp range, which is approximately 1 range cooler than the Champions I had that were a 12 range.

Checked the timing and ended up with 22 initial, and 16 mechanical advance for total of 38. Had the lightest springs on the MSD distributor and it appeared from the tach light that it was "all in" before 2000 rpms.

Ran it up and down the road some, getting up to high 5000 rpms, and most of the run at 4000, but also had it ideling quite a while when I was messsing with timing and idle screw adjustment on the carb.

Pulled the plugs tonight and #1 again was showing carbon fouling and #3 was white, with some white residue on the ground strap seeming to indicate too hot.

Scootter, that's a good idea and I will check my wires, but will have to hit the Radio Shack for an ohm meter. Was thinking of some new wires anyway. Hope that's what's happening with #1 as I would guess that if the fouling is because of the jetting being too rich, it would show up on all the plugs.

BTW - CJ428CJ - Don Gould at 4SecondsFlat is who I got my carb from so I've read that paper front to back a couple of times. That's the reading technique I've been going by, and approach to timing, thus the high initial and lower mechanical, which he seems to recommend.
thanks!
Scott
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