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#1
09-21-2014, 04:40 PM
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E-head sparkplugs ?
I am looking at ordering some new plugs. Right now I am using NGK r5672a-9. Just looking to see if I am right using these projected tip plugs. I have 12-1comp and running 36 deg timing. I have not had a problem but was wondering if I should try a non projected tip plug Also will a resistor plug be of any advantage with these new ignition boxes?
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#2
09-21-2014, 07:17 PM
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This should get you started in the right direction.
http://forums.maxperformanceinc.com/...d.php?t=754779
__________________
No! Do not try! Do! Or do not. There is no try. - Yoda 1967 Firebird Restoration 2005 - 1/25/2017 
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#3
09-21-2014, 07:40 PM
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Quote:
If it is a N/A application, I would stick with the Projected tip plug. Power adder stuff we use the non projected tip plugs. I am more of an Autolite plug guy myself, and use them in just about everything. If N/A, I would go with the AR3923 or 24 race plug. Our Power Adder stuff uses the AR393x series, non projected tip. Both of which are Resistor plugs and would be gapped according to the application, different builders having different preferences. If it is NGK you want to stick with, personally I feel -9 is a bit on the cold side for the combination you listed. 
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#4
10-13-2014, 12:44 PM
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__________________
 3 Generations of "Beach Boys Racing" ! Everybody knows somthin. Nobody knows everything ! 1st time on a dragstrip, 1964. Flagstart ! "Thanks for the entertainment." "Real Indians Don't Wear Bowties" |
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#5
10-13-2014, 12:46 PM
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Would NGK R5671A-7 be too hot for racing?
463 with 72cc eheads
__________________
3 Generations of "Beach Boys Racing" ! Everybody knows somthin. Nobody knows everything ! 1st time on a dragstrip, 1964. Flagstart ! "Thanks for the entertainment." "Real Indians Don't Wear Bowties" |
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#6
10-13-2014, 01:23 PM
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I would think it's a little cold as well. I run 7s w e85 and 12.8 :1 compression. Tried 8s w c12 no change. Now if I switch fuels I run the 7s. NA. I like the ng ks. They re cheap and easier to read
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1969 carousel red firebird 455, richmond 5 speed 1964 540 gto 1971 lemans sport convertible 1972 Maverick under slow construction |
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#7
10-13-2014, 01:30 PM
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Quote:
Ran 7's at 13.8 CR...no problems They were not projected tips..
__________________
 ECM member. 2008 Outlaw Pontiac Drag Series Champion MANDRA Do it now fool! Life is short. 69 Grand Prix/3163lbs / IAII 535 w/ Tiger heads by Gaydosh....9.35@ 144 so far..  through mufflers. 1.26 60'. Going back to track with pump gas engine.... My 60 Ventura retired to street/strip duty.. |
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#8
10-13-2014, 01:33 PM
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I run NGK FR5 and e-85 NA
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