41chevy Posted May 5, 2017 Share Posted May 5, 2017 These 2 are the most recognizable out of 25 out of 32 different plugs I've tried to run.. 7 Autolites, 5 Accels, 5 Bosch and 8 Champions.Waiting for radial engine aircraft type plugs now. .Better plugs than pistons, head bolts or worse I guess. Only 40 lbs of boost too. Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment Share on other sites More sharing options...
hurstscrambler Posted May 5, 2017 Share Posted May 5, 2017 Yikes! 1 Quote Link to comment Share on other sites More sharing options...
h67st Posted May 5, 2017 Share Posted May 5, 2017 What motor is this out of (photo?)? I worked on a 345 IH gas motor years ago, clattering to beat the band. We were prepared to pull the engine, thinking it was a rod bearing. Turned out one of the porcelains was loose in the spark plug, bouncing up and down with every stroke. Quote Link to comment Share on other sites More sharing options...
68-f-model Posted May 5, 2017 Share Posted May 5, 2017 You have tried every single brand of plug except what I would have started with. Try NGK they are the only ones I put in my various motors ever since a champion decided it wanted to self destruct and take a hole from my piston with it. 1 Quote Link to comment Share on other sites More sharing options...
Freightrain Posted May 5, 2017 Share Posted May 5, 2017 Ouch. Man, can't any of the plug suppliers give you something that will survive? Only thing I have to deal with is the ground straps fall off my Autolite Racing plugs. Typically only replace in the spring, but I'm guessing they break sometime during the year. Last week I went to Beaver Springs for the FE Reunion. I changed the plugs and found 3 that were missing the strap completely. Still ran the numbers last fall. Or did they break off during the winter sleep and when I started it to load it they disappeared? Didn't sound any different before or after. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
Popular Post 41chevy Posted May 5, 2017 Author Popular Post Share Posted May 5, 2017 6 hours ago, h67st said: What motor is this out of (photo?)? I worked on a 345 IH gas motor years ago, clattering to beat the band. We were prepared to pull the engine, thinking it was a rod bearing. Turned out one of the porcelains was loose in the spark plug, bouncing up and down with every stroke. 4 hours ago, Freightrain said: Ouch. Man, can't any of the plug suppliers give you something that will survive? Only thing I have to deal with is the ground straps fall off my Autolite Racing plugs. Typically only replace in the spring, but I'm guessing they break sometime during the year. Last week I went to Beaver Springs for the FE Reunion. I changed the plugs and found 3 that were missing the strap completely. Still ran the numbers last fall. Or did they break off during the winter sleep and when I started it to load it they disappeared? Didn't sound any different before or after. Called Kieth Black and confirmed it through Aires on their dragster engines running double my boost and they use special racing Champion plugs. They're sending me plugs that they say will take the boost, methanol and nitrous with no problems. The suggestion from Ohio George was the same as Champion. Accel was no ideas what to do "we don't make anything like you need" and Bosch was response. h67st It is a Ford 2.7 liter turbo, , Scat crank, Aires pistons, Keith Black rods, full girdle on block and head. Ford Racing cross flow head with 8 injectors and 8 plugs modified by Air Flow Research. Methanol fueled running,4 stage nitrous with 40 + of boost. Approx 650 + r. w.h.p. 4 Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment Share on other sites More sharing options...
other dog Posted May 6, 2017 Share Posted May 6, 2017 23 hours ago, Freightrain said: Ouch. Man, can't any of the plug suppliers give you something that will survive? Only thing I have to deal with is the ground straps fall off my Autolite Racing plugs. Typically only replace in the spring, but I'm guessing they break sometime during the year. Last week I went to Beaver Springs for the FE Reunion. I changed the plugs and found 3 that were missing the strap completely. Still ran the numbers last fall. Or did they break off during the winter sleep and when I started it to load it they disappeared? Didn't sound any different before or after. The first trip to Beaver Springs was one of my favorite stories, I guess it's "old hat" now! 1 Quote Producer of poorly photo-chopped pictures since 1999. Link to comment Share on other sites More sharing options...
Mike Posted May 8, 2017 Share Posted May 8, 2017 Diamond E 3 Spark Plugs. Try a set and let me know how they do. Quote Link to comment Share on other sites More sharing options...
41chevy Posted May 8, 2017 Author Share Posted May 8, 2017 2 hours ago, Mike said: Diamond E 3 Spark Plugs. Try a set and let me know how they do. Can't run them. My ignition is an MSD Pro Mag 44 amp Magneto (takes 16 volts to power it up to run independent) 50.000 volts at plugs through 9 mm copper core wires with minimum plug gap of 080. All that power is needed to fire the plugs with 40 pounds of boost and 14 to1 "running" compression. I get one run maybe 2 out of the plugs before the electrode is burned away. Could not get the minimum gap with those types of plugs or be able to index them in the chamber. Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment Share on other sites More sharing options...
Freightrain Posted May 8, 2017 Share Posted May 8, 2017 On 5/6/2017 at 8:46 AM, other dog said: The first trip to Beaver Springs was one of my favorite stories, I guess it's "old hat" now! What's funny is every year since there is another "mountain" story from someone that followed google maps and didn't look at the satellite view!! Doh!! Live and learn. 2 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
Hobert62 Posted May 9, 2017 Share Posted May 9, 2017 Guy I new of around here that races cuts the strap off the spark plug before he puts them in. He lets it spark off the head. Quote Link to comment Share on other sites More sharing options...
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