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Author Topic: NGK FR5-1 7252 ok to use?  (Read 9059 times)

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Offline Eagle80

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NGK FR5-1 7252 ok to use?
« on: January 10, 2014, 01:37:47 PM »
Hello! I recently purchased an 1980 Eagle and have been planning my repair/upgrade list. I got some NGK FR5-1 spark plug to replace the Champions that are currently in it. When I compared the two side by side it appears the NGKs are slightly longer and would protrude further in the combustion chamber. Was wondering if that's acceptable and what people's opinions are on what spark plugs to run if not. My first post so thanks for everyone's time in advance.
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Offline IowaEagle

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Re: NGK FR5-1 7252 ok to use?
« Reply #1 on: January 10, 2014, 01:48:07 PM »
A thumbs up for your first post.  Not sure about the NGK's.  I stick with the Bosch plugs that are for our engines.
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Offline JayRamb

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Re: NGK FR5-1 7252 ok to use?
« Reply #2 on: January 10, 2014, 03:02:09 PM »
I have Champion in my 87 Eagle. Seems to do better than NGK and Bosch for my engine. Trial and error.
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Offline carnuck

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Re: NGK FR5-1 7252 ok to use?
« Reply #3 on: January 10, 2014, 04:35:59 PM »
Stock wasn't Bosch. Should be Autolite or Champion. The FR5-1 are extended tips. See what the OEM number is on your emissions tag. 985 Autolite was also extended tip. I switched to NGK BKR6EK plugs with a hotter coil. ('70s Mopar IC12SB from Napa) and I get zero ping without my EGR.
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Offline Eagle80

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Re: NGK FR5-1 7252 ok to use?
« Reply #4 on: January 10, 2014, 10:30:14 PM »
Thanks for everyone's answers. Went with the Bosch FR9HC+. I'm doing the TFI upgrade so I gapped em to .045. I'm in Michigan so while the car is remarkably rust free (for MI), the engine needs some attention. Half the emissions junk is disconnected and the other half consists of dry rotted vacuum lines! I'm sure I'll have more questions.
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Offline Monkeyjoe

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Re: NGK FR5-1 7252 ok to use?
« Reply #5 on: January 11, 2014, 02:21:56 AM »
I pretty much use champion plugs on everything I own now.  The only thing I use NGK plugs on now are my motorcycles and boat motors.
« Last Edit: January 11, 2014, 04:14:01 PM by Monkeyjoe »
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Offline eaglebeek

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Re: NGK FR5-1 7252 ok to use?
« Reply #6 on: January 11, 2014, 10:39:40 AM »
Quote from: Eagle80 on January 10, 2014, 10:30:14 PM
Half the emissions junk is disconnected and the other half consists of dry rotted vacuum lines! I'm sure I'll have more questions.
Are you in a smog-test area? :eagle:
« Last Edit: January 11, 2014, 10:41:22 AM by eaglebeek »
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Offline Eagle80

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Re: NGK FR5-1 7252 ok to use?
« Reply #7 on: January 11, 2014, 12:37:18 PM »
No, MI has no emissions requirements. Catalytic converter is already long  gone. I have a Motorcraft 2150 kit coming from Gronk and plan on removing as much of the lines as possible.
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Offline Eagle80

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Re: NGK FR5-1 7252 ok to use?
« Reply #8 on: January 11, 2014, 02:15:55 PM »
Also was wondering about the component attached to the coil circled in the picture. I'm doing the TFI conversion and wanted to know if that had to go on the new coil or if it wasnt required.  You can see my new coil in the picture.
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Offline Monkeyjoe

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Re: NGK FR5-1 7252 ok to use?
« Reply #9 on: January 11, 2014, 03:03:51 PM »
that looks like an old "insulator"  They were used to help cut down on the electronic interference in your am/fm radios.
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I JUST TELL MY WIFE "SOME PEOPLE COLLECT STAMPS"
1982 AMC Eagle SX4, (Little Beast)
1983 AMC Eagle Wagon, (Gold Digger)
1992 Dodge, Cummins, 1 Ton Duelly (Big Red)
1967 International Scout 800 (Scooter)
1988 Chevy k1500
1960 Ford F100
1927 Model T, Hotrod(Daddys Girl)
1961 Willys FC150 (Scat)
1978 Honda CB750
1971 Honda CB350

Offline IowaEagle

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Re: NGK FR5-1 7252 ok to use?
« Reply #10 on: January 11, 2014, 03:38:20 PM »
Yeah, that appears to be the noise suppression condenser to get rid of that annoying buzz sometimes heard on radios
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Not a Jeep.  Not a Car.  Its an AMC Eagle!

1982 Eagle SX/4 Sport;
1980 Concord DL;
1970 Ambassador 2 Dr HT, SST
2002 Hyundai Santa Fe;
2008 Jeep Patriot Sport - Freedom Drive II

Offline carnuck

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Re: NGK FR5-1 7252 ok to use?
« Reply #11 on: January 11, 2014, 03:57:25 PM »
More the AM than FM side. It's just an old ignition condenser put to a different purpose.
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Offline Eagle80

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Re: NGK FR5-1 7252 ok to use?
« Reply #12 on: January 12, 2014, 10:17:09 AM »
Interesting. I think I'll leave it off and see what happens. I do listen to AM radio so hopefully with more "modern" ignition components I wont get any interference on the radio. Thanks again!
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Offline Monkeyjoe

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Re: NGK FR5-1 7252 ok to use?
« Reply #13 on: January 12, 2014, 12:34:36 PM »
sorry but you will probably still get the interference, 
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I JUST TELL MY WIFE "SOME PEOPLE COLLECT STAMPS"
1982 AMC Eagle SX4, (Little Beast)
1983 AMC Eagle Wagon, (Gold Digger)
1992 Dodge, Cummins, 1 Ton Duelly (Big Red)
1967 International Scout 800 (Scooter)
1988 Chevy k1500
1960 Ford F100
1927 Model T, Hotrod(Daddys Girl)
1961 Willys FC150 (Scat)
1978 Honda CB750
1971 Honda CB350

Offline Eagle80

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Re: NGK FR5-1 7252 ok to use?
« Reply #14 on: January 12, 2014, 03:24:09 PM »
The instructions I got with the upgrade kit make no mention of either leaving it on or taking it off. I had no idea what it was. Guess I will have to figure out a way to attach it to the coil bracket. Thanks-I do want to be able to listen to the radio in my eagle!
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