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Old 05-23-2016, 08:31 PM   #1
shoe box Jack
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Default spark plugs

looking for the # off the NGK plug. I was told that the ngk spark plugs are the best to use in a 239 ford??. JACK.
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Old 05-23-2016, 08:40 PM   #2
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Default Re: spark plugs

I ran a set in my dads 46 coupe because he said it was starting, running funny and I had a set ordered from NAPA. I don't know number off hand but it did improve the car in a drastic way, why I do not know but it ran great. I will look for the number.
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Old 05-23-2016, 08:44 PM   #3
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Default Re: spark plugs

I believe it is NGK B6L - should be a direct replacement for a Champion H-10
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Old 05-23-2016, 08:45 PM   #4
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Default Re: spark plugs

Yep, that is it I beleive.
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Old 05-23-2016, 09:04 PM   #5
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Default Re: spark plugs

I prefer Champion 844 plugs, other folks prefer Autolite 216s.
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Old 05-23-2016, 11:33 PM   #6
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Default Re: spark plugs

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Currently these are the best that I have used.----

http://www.fordbarn.com/forum/showthread.php?t=192185
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Old 05-24-2016, 12:24 AM   #7
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Default Re: spark plugs

My '47 59AB came with Champion H-11 in it and are still running well. Seem to burn correctly. May consider NKG's when ever they wear out. Although "modern" engines, have NKG's in our two 2003 1.8 turbo VW's .... first set replaced at 80,000 miles. The second set now have 35,000 on them.
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Old 05-24-2016, 06:07 AM   #8
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Default Re: spark plugs

Here is a handy cross ref.
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Old 05-24-2016, 03:30 PM   #9
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Default Re: spark plugs

We were running NGK B-6L and having issues with occasional plug fouling on a cold start , switched to hotter B-4L problem solved, though we possibly could have got away with #5 but the #4 was on the shelf. The motor is modified some.
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Old 05-24-2016, 03:55 PM   #10
shoe box Jack
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Default Re: spark plugs

Thanks for the info I have allways used champs but not happy with the last set I am going to try the ngk b6l. Let you no how they worked by this Oct. Thanks again. Jack.
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Old 05-24-2016, 08:12 PM   #11
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Default Re: spark plugs

B6L are the best plugs I have ever run! Autolite 437's are great but too long for stock heads.
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Old 05-25-2016, 12:40 AM   #12
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Default Re: spark plugs

Remember the ABC rule ! Anything But Champion.
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Old 05-25-2016, 05:24 AM   #13
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Thumbs up Re: spark plugs

Bertha likes the B-6L.

Bob
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Old 05-25-2016, 06:53 AM   #14
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Default Re: spark plugs

I like the NGK B6L over any other plug that I've used - and I've used just about all of them. Just runs and lasts the best. I've never found a reason to go hotter with the B4Ls, but some folks do.
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Old 05-25-2016, 10:08 PM   #15
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Default Re: spark plugs

NGK B6L the best I have ever run. If you're running stock and 6 volt like me I like .025 gap.
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Old 05-26-2016, 05:01 AM   #16
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Thumbs up Re: spark plugs

Quote:
Originally Posted by miller91 View Post
NGK B6L the best I have ever run. If you're running stock and 6 volt like me I like .025 gap.
^
X2

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Old 05-26-2016, 06:03 AM   #17
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Default Re: spark plugs

I did a search for USA manufactured spark plugs and "no results found". Maybe I didn't ask the question correctly.

I have never had a problem with Champion plugs. I'm not sure why they are out of favor. Perhaps the (I think) Mexican manufacture location?
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Old 05-26-2016, 03:00 PM   #18
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Default Re: spark plugs

On Navarro and Offy heads that I have B6L plugs are too short and very prone to fouling .....
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Old 05-26-2016, 03:09 PM   #19
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Default Re: spark plugs

Quote:
Originally Posted by vilanar View Post
On Navarro and Offy heads that I have B6L plugs are too short and very prone to fouling .....
That's what happens when you attempt to use the wrong reach plugs for the application.
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Old 05-26-2016, 11:38 PM   #20
vilanar
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Default Re: spark plugs

Yeah, previous owner did put those NGK´s , cause he didn´t knew......
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