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Old 09-15-2020, 05:08 PM   #21
KGS
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Default Re: NGK Plugs

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Originally Posted by GB SISSON View Post
Why B4L and not B6L?

GB, B-4L is a hotter plug. Probably a number of reasons to use a hotter plug. I've used them in engines that used oil and they ran better and burned cleaner than with a colder plug. Otherwise, I use B6L.
Ken
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Old 09-15-2020, 05:14 PM   #22
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Default Re: NGK Plugs

Best of all the choices for me.
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Old 09-15-2020, 05:41 PM   #23
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Default Re: NGK Plugs

Which NGK would be best in a stock 59AB?
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Old 09-15-2020, 06:28 PM   #24
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Default Re: NGK Plugs

I overhauled mine about 3000 miles ago , 120# compression, uses no oil I guess I'll buy the 6!
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Old 09-15-2020, 06:52 PM   #25
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Default Re: NGK Plugs

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Originally Posted by 51woodie View Post
Which NGK would be best in a stock 59AB?


Stock use the B6L
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Old 09-15-2020, 07:25 PM   #26
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Default Re: NGK Plugs

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Thanks to everyone for the glowing reviews of the NGK's, I originally got the recomend from someone local and was not sure.


Thanks again everyone
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Old 09-15-2020, 07:31 PM   #27
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Default Re: NGK Plugs

Hello Anyone use an Autolite 386?
I am useing them on a stock 221 with dual exhaust and an old 30s Roof intake with no heat and two 81 carbs runs fine but last weekend we went on a Toy Run and lots of stop and go,started to run rough so I detoured on to the hyway for a couple of miles and it cleared right up? I might just try some B6L
Thanks
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Old 09-16-2020, 03:00 AM   #28
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Default Re: NGK Plugs

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Originally Posted by 51woodie View Post
Which NGK would be best in a stock 59AB?
B6L in mine

GB
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Old 09-16-2020, 07:13 AM   #29
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Default Re: NGK Plugs

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Originally Posted by GB SISSON View Post
Why B4L and not B6L?

The B4Ls run a little cleaner with the cam and straight-linked triple 97s on the 286 in my roadster.
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Old 09-16-2020, 12:22 PM   #30
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Default Re: NGK Plugs

What Gap is used on the B6L NGK plugs?
Do these plugs burn hotter that a 216 Autolight?
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Old 09-16-2020, 01:57 PM   #31
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Default Re: NGK Plugs

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What Gap is used on the B6L NGK plugs?
Do these plugs burn hotter that a 216 Autolight?

The B6L is equivalent in heat range and operation wise to the 216 and the Champion H-10 The difference in the NGK is they will perform much better compared to the other two. At least thats what I experience when comparing the three in equal / identical applications. For gap .035
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Old 09-16-2020, 08:55 PM   #32
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Default Re: NGK Plugs

OK, I am always questioning. So for my stock, but 12v 221 I want to set my plug gaps to .035? Hoping to pick them up on Saturday if the smoke clears up enough to find the Napa store.
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Old 09-17-2020, 04:41 AM   #33
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Default Re: NGK Plugs

Personally I wouldn't use a gap as big as .035. The HT side of the ignition can be a weak point and the spark will try and go anywhere except across that plug gap. It takes a lot more energy to jump a 35 thou gap than a 25 thou gap.

I have always used the autolite 216s. They work ok for me. I will probably try some NGKs next time, but I can't see how they will be better. As long as they work ok they will be as good as the 216s.

You need to have a plug type that is giving problems to then state that the replacements are an improvement.

NGK are a quality brand though and are an OEM supplier to the automotive industry.

Mart.
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Old 09-17-2020, 07:56 AM   #34
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Default Re: NGK Plugs

I've been using the B4L also, helps with a little cam to keep them clean.
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Old 09-17-2020, 10:15 AM   #35
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Default Re: NGK Plugs

Not 100% certain but I was always under assumption that plug gap for points is different from electronic ignition around .010” smaller? .030” points .040” electronic. Depending on the system? And magnetos even smaller? Say .025”? Just asking ��
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Old 09-17-2020, 10:28 AM   #36
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Default Re: NGK Plugs

I switched to H10’s because I had three electrodes pull out of the 216’s. Never thought to use NGK, but I’ll give them a try next time I swap plugs....... Mark
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Old 09-17-2020, 11:20 AM   #37
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Default Re: NGK Plugs

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I switched to H10ís because I had three electrodes pull out of the 216ís. Never thought to use NGK, but Iíll give them a try next time I swap plugs....... Mark

I stopped buying 216s many years ago because of poor quality with misplaced center and ground electrodes, made in China.
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Old 09-17-2020, 01:46 PM   #38
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Default Re: NGK Plugs

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Originally Posted by Mart View Post
Personally I wouldn't use a gap as big as .035. The HT side of the ignition can be a weak point and the spark will try and go anywhere except across that plug gap. It takes a lot more energy to jump a 35 thou gap than a 25 thou gap.

I have always used the autolite 216s. They work ok for me. I will probably try some NGKs next time, but I can't see how they will be better. As long as they work ok they will be as good as the 216s.

You need to have a plug type that is giving problems to then state that the replacements are an improvement.

NGK are a quality brand though and are an OEM supplier to the automotive industry.

Mart.

Mart the plug gap at .035 if its a 6 volt system or 12 volt would only be the weak point of the HT side of the ignition circuit if the plug wires being used are junk. Since many of us have had problems with both the 216 and the H-10 stating the NGK replacements are an improvement is exactly what we are doing.
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Owner , Builder and Driver of the First Ford Flathead bodied roadster to run 200 MPH Record run July 13, 2018 LTA timing association 200.921 from a standing start in one and a half miles burning gasoline.
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Old 09-17-2020, 09:23 PM   #39
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Default Re: NGK Plugs

As for me it was the crappy plug wires. I learned a lesson about path of least resistance, and now I want the best HT side I can conjure up. Best plugs, best gap etc,.
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Old 09-19-2020, 01:49 PM   #40
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Default Re: NGK Plugs

What gap should be used on B6L NGK plugs in a EAB stock Flathead
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