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#41
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I watched the episode of Engine Masters where they tested plugs. Other than maybe a little longevity there was no difference between a cheap champion and an expensive NGK. It’s an interesting watch. Anyway, I’m gonna take everyone’s council and experiment with a little hotter.
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468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
#42
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Only Champion Race plugs for me ! They are one piece. |
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#43
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I have only one spark plug break on me and it was a champion .... brand new set.. ..... engine started missing the next day and drove me crazy for a day or two checking things that were irrelevant pulled the plugs out and one had over double the proper gap somehow the center electrode had broken and moved
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If your not at the table you're on the menu A man who falls for everything stands for nothing. |
#44
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#45
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#46
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Touché, I did check the PCV valve though just didn’t feel the port to be loose till I really started digging
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468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
#47
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I use Champions, in my lawn mower.
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#48
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Glad to hear that you found something to improve your problem.
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#49
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Ok so I’m obtuse. Is everyone of the consensus that NGK are the best? If so what plug should I get that meets all the requirements.
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468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
#50
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Eh, there ok I guess for a Japanese plug. I mean they work ok, just a pet pieve of mine but leave it to the Japanese to get the heat range numbers backwards (higher number is colder) complete opposite of every other plug on the planet so you need to have a good idea of heat ranges used with other plugs and what the engine likes and then make educated decisions corresponding to the Japanese plug.
You can follow a chart to get close....kinda |
#51
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This is what my NGK XR5s look like after a few hundred miles..... New! I went for a 60 mile drive last Friday, Average 55-65MPH at 2500 RPM with a few WOT blasts. AFRs were in the 13s-12s at cruise and 11s-10s at WOT. I just checked 2 plugs and they are white, but with a fuel ring at the bottom. I expected them to color up but they didn't..... 400 with 62 heads and 2802 cam, QF double pumper. 93 octane E10. I'm trying to get the AFRs out of the 10s and 11s but confused how the plugs have so little color. If you guys remember, I've got like a 8 page thread on tuning my carb. It's paid dividends, when I bought the car, it was turning plugs into black lumps. Now it's running too clean! Most of the plug fouling is the blubbering rich idle circuit. That's usually due to improper throttle blade settings, transition slot idiocy along with IFR and LSAB and mixture screws. Taking the IFRs from 33 to 30, and moving to the low location made a HUGE difference. These modern holley clones are really farked up. So I don't see how the OP's black plugs are OK on modern pump fuel. Is this straight gas? What carb is on this engine? And get an O2 sensor, otherwise you're totally guessing what the carb is doing.
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I could explain all this to the girl at the parts store, but she'd probably call the asylum. White '67 LeMans 407/TH350/Ford 3.89... RIP Red '67 LeMans. 407/TH400/Ford 3.25 Last edited by chiphead; 06-10-2024 at 11:17 PM. |
#52
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R45TS? Is that the plug I “probably” need
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468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
#53
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Not for an aluminum head. Those are small short plug with taper seat for iron heads and not a 3/4" reach that you need with aluminum.
The "T" is for taper seat and the "S" is extended tip. Don't know the AC part number for the aluminum heads, it's some weird number for the 3/4" reach stuff. I gave up on AC delco a long time ago when they started jumbling their numbers around and seemed to get rid of some heat ranges I was using. They became harder to find around here. Especially when it came to 3/4" reach stuff they weren't using the same heat range numbers that they did with the old stuff. So I moved on to Autolite and have been happy since. Once in a while I'll use an NGK. I avoid Champion and AC delco. |
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#54
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Ok NGK 4554 how is that?
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468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
#55
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What heads are you running?
Those plugs are for aluminum heads mostly. Would be good for edelbrock heads possibly. ![]()
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#56
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That is a very cold racing plug (8 heat range)….ready for a 300 shot of NOS.
I posted this link earlier. Maybe you missed it. https://butlerperformance.com/i-2445...html%3Fq%3DNGK |
#57
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On NGK the last digit on the racing series is the heat range.
On the normal plugs it is the first number after the letters. Must have made sense to someone. LOL |
#58
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What plugs does the builder recommend?
What. carb. is. this? I would re-baseline the tune with a plug heat range that is middle of the road for the aluminum heads. Re-baseline the carb based on prior tuning notes or the default settings for the carb.
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I could explain all this to the girl at the parts store, but she'd probably call the asylum. White '67 LeMans 407/TH350/Ford 3.89... RIP Red '67 LeMans. 407/TH400/Ford 3.25 |
#59
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This is the plug the builder told me to buy. I called Butker and they said it would be ok so I’m gonna try it. It runs good right now but y’all got me scared about the two piece champions now.
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468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
#60
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There isn’t any hurry.
Not all the Champions are 2 piece. I wouldn’t be concerned about the two piece construction as much as the current quality of the manufacturing. I have used hundreds of Champion plugs and not had an issue ever. But the quality of them is just not as good as it use to be. There are better plugs now. Autolite plugs I have had horrible luck with. Not to say they are a bad plug, I gave up on them 30 years ago. I can’t recall the last time I had a full set of them that worked. But I attribute that to the old ties Autolite has with Ford. Ford and me don’t get along so well. Lol I put 300K miles on a set of NGK plugs in one vehicle. I didn’t know that was even possible. Pretty much sold me one them. |
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