FE Power Forums
FE Power Forums => FE Technical Forum => Topic started by: fryedaddy on April 14, 2016, 08:10:11 PM
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jay,what sparkplugs did you say you used and if i remember right dont they have the flat seats with washers and would they work on iron cj heads with tapered seats?
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Not Jay nor Barry... You have to use a tapered seat plug. If you need plug numbers, instead of the 45's. Let me know. Don't think the washers will work. JMHO
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i have tried 4 different plugs the first 1000 miles on my 428,not really happy with any yet.i used champions back in the 80s,but i dont know what to run now that im back in the game
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I have been stupid, crazy busy the past several weeks. Right now it looks like either four or five engines to dyno next week....
They have it covered on the taper seat deal - you cannot easily move away from that. What is it about the plugs that you do not like? Pretty common these days with unleaded and hot ignitions to have the plugs look darn near new even after lots of time.
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i tried a couple different carbs,played with the jetting,timing curve,etc.im just trying to get all i can out of it.i know a plug is a plug,i just need some encouragement toward a decent plug for a 500-550 horse 428 street motor.i dont care if i have to change them more often or not .just need some part numbers and brands.i bought some 99 cent auto 45s and the guy at auto zone laughed at me and said they were no good.i had some champion 11ys and they kept getting loose
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Ahh, what happened to the good ol days of the BRF 32's and 42's .
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i couldnt find any of those in town.when i retire soon im going to get ,barry,jay or blair to build me a nice fe if they will.i have friends with sbc cars that i can barely run with.i would like to show up and surprise them with a couple hundred extra horses!
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i tried to find an earlier post on sparkplugs so i wouldnt have to bring it back up again but i couldnt find it
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For iron heads I like Autolite 124's. They need a stout ignition on the street though...
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i have a msd pro billet dist,box and coil.do you use regular,copper,platinum
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Buy some Autolite AR32's and you're good to go. No Platinum or other whizzy plugs required. Champions also not one of my choices except for the lawnmower.
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thank you POSI67,thats all i want to know!! i havnt tried those yet,so nows a good a time as any,thanks
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Correction... SORRY! AR33's which are the same as a BF 22 as far as heat range. The AR32's will be too cold for a street engine. Because of your MSD setup the 33's should work well without fouling. Stock ignition likely would be a plug killer.
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I've always run Motorcraft plugs in all my street cars ( various engines ), never had an issue. I used to run Motorcraft plugs in the racecar until Motorcraft discontinued the BF-32's, then I switched to Champion RF9YC's. That's the same heat range as the BF-32. I've been running those about 20 years now, also never had an issue ever. I know some people don't like them, but no problems for me. I run a MSD 6, MSD distributor and MSD coil. The current standard heat range Motorcraft FE plug is the BSF-42C. The "S" is for suppression ( resistor ) and the "C" is for copper core. I agree, skip all the multi electrode plugs, in my opinion they are all just marketing gimmicks. Motorcraft BF 22's are still available from Ford, but would most likely be a special order at most dealers. On the Motorcarft's the lower the number the colder the plug.
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Here are some plug #'s that I run and have had really good to great luck with. I run a hot ignition and use a .035 gap. Autolite 124's, NGK AP9FS (very cold) , AP8FS, AP7FS. I use the 8's alot. Good luck!
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Buy some Autolite AR32's and you're good to go. No Platinum or other whizzy plugs required. Champions also not one of my choices except for the lawnmower.
This. In my iron head 351Cs around the 500 HP range I run one step colder than stock, use only Autolite. No problems. Also as above - if you are running unleaded with modern CD type/MSD hig power ignition - looking at the plug will get you about nowhere. It can be fat as hell and the porcelain white as a ghost. You can tell somewhat from the base of the plug after the threads end. You can get an idea of heat range by looking close at the plug ground electrode - optimum would put some discoloration about the middle of the electrode more or less. If you really want to know what your mix is, you'll need a O2 sensor bung, software, laptop or reader unit and the appropriate sensor to get real A/F readings. Or run a few gallons of VP110 leaded fuel through it to try and color the plugs.
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Back in the day, '22s' were too cold for a normal street-driven engine. '32s' were very forgiving for any performance/street use. And by the way, when running the Thunderbolt, we were given plugs by the case. Champions had to be changed after every run. Autolites were good for a full day of runs, but in order to get a new case of plugs, we were asked to return the 'old' steel shells with the porcelain knocked out. PI A, but the plugs were so much better we did it.
KS
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True.. BF22's didn't survive well on the street. Newer hot ignition makes them viable now however something in the same range as the BF32 would be perfect for most. Haven't been available for years though. Autolite confused the situation with new numbers so the AR33 is the equivalent of a BF22 and the AR32 is the same as a BF12 which is too cold for most anything. Champion F9Y's lasted a day in my car. Wouldn't use them if they were free now.
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Dale, those AR 32 and 33 don't last long on the street. Had problems with them in doing so. Found the 113 from Autolite and those did much better than the AR stuff. You can't get the 113's anymore. If you need that cold of the plug. The NGK's AP9FS is for you then. I have ran a lot of 124's but I found out the NGK's lasted the longest out of any of those I listed for street use. JMHO
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I haven't ever noticed a difference with any brand, have run everything from Accel to NGK to anything inbetween. All my stuff has Champion right now.
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I did forget to say... Mine was a daily driver for 10+ years. Summer, winter, snow and extremely cold days. Besides trips across the country....
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Ok, how about aluminum beaded, hi compression, high horse power stuff. ? What plugs are you guys useing there ?
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Ok, how about aluminum beaded, hi compression, high horse power stuff. ? What plugs are you guys useing there ?
I just run Iron heads with 10~11to1 on pump gas. So I won't be much help to you. Maybe Ross or some can help you there.
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Ok, how about aluminum beaded, hi compression, high horse power stuff. ? What plugs are you guys useing there ?
With my Pro-Ports I like the Autolite 3911 or NGK R5671A-9 if I'm running Sunoco 106 and a lot of timing. If I'm running around detuned with ethanol free pump premium I like the NGK BKR6E.
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thats some good info.i am really getting schooled on plugs
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True.. BF22's didn't survive well on the street. Newer hot ignition makes them viable now however something in the same range as the BF32 would be perfect for most. Haven't been available for years though. Autolite confused the situation with new numbers so the AR33 is the equivalent of a BF22 and the AR32 is the same as a BF12 which is too cold for most anything. Champion F9Y's lasted a day in my car. Wouldn't use them if they were free now.
BF-12s! Brings me right back to my youth. In 1978 after I got my Shelby, I thought I better try some colder plugs in the 428CJ. Down to the Ford dealer I went, and ordered a set of BF-12s; figured my new Accel Super Coil could fire just about anything. The grizzled veteran behind the counter had a nodding acquaintance with me after my frequent trips to the parts counter. He pulled a box of BF-12s from the shelf, opened one up, and showed it to me.
"What do you see there, son?"
"Well, that looks like a pretty cold plug".
"That plug is colder than a popcorn fart! You don't want to run that on the street."
I bought a set of BF-22s instead. Eventually took them out and went back to BF-32s, until I got my first MSD. These days I regularly run plugs that are "colder than a popcorn fart" LOL!