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take a new one out of a box and look at it, imagine a bluish line halfway on the strap. before the bend, then the rest of the plug should look like it came out of the box........Thats what most on here will call a good plug.
 

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and autolites read different than ngk
 

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Discussion Starter #5
ngk 10s plugs and gaped at 20...... plugs look very good on the first pass and the second is ok. but the third pass, it gets a little ugly. this is with 2 foggers. car sounds good and runs good
 

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Discussion Starter #9
:confused:yea......what he said. my first pass look something like that but by the time i get to the 3rd pass, they are a little darker than that. is something wrong
 

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as far as i can remember hearing , plugs wont clean up with more and more passes on them , you can clean them with brake cleaner and maybe a soft wire brush after every pass , even then they will get darker throughout more passes , if you want to tune properly a new set of plugs or at least certain cylinders you want to concentrate on needs new plugs

Dan
 

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NO wire bush on plugs. The metal from the wires will short the plug, like a pencil line in a distributor cap.
 

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Nice Power Mad...the motor sounds like it has loads of Trq! 60' & 1/8 ET & MPH on what n20 jets? Stall speed on the Converter & Gear Ratio and tire size? Weight race ready? Thx and good luck. Be safe.
 

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as far as i can remember hearing , plugs wont clean up with more and more passes on them , you can clean them with brake cleaner and maybe a soft wire brush after every pass , even then they will get darker throughout more passes , if you want to tune properly a new set of plugs or at least certain cylinders you want to concentrate on needs new plugs

Dan

i have ran plugs for 2 different weekends. if your system is right fuel pressure, timing. the plugs will always clean up..
 

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Nice Power Mad...the motor sounds like it has loads of Trq! 60' & 1/8 ET & MPH on what n20 jets? Stall speed on the Converter & Gear Ratio and tire size? Weight race ready? Thx and good luck. Be safe.
THANKS .60 1.16 1/8TH 4.85 @ 148 JETS 28 #1 /30 2ND. THE SECOND CAME ON AT .8 OUT .stall is 4100 ,set at 3900.33/10.5 3000lbs as you can hear it was soft .will have update's soon on 3 sysetms.
 

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Thx Power Mad. Your 632 seems very similar to my 665. IF the track is tight enough, and we do not have any gremlins with all the changes (tighter converter - 3900 stall, new 3.60 gear, vac pump, water / methanol injection, 2nd stage connected, data logger, etc.), it should roll. 1st stage .034N went 1.161 4.98 @ 143 1/8 7.76 @ 179, 3000#, old 3.60 gear, looser 4600 stall converter, 33 x 10.5W. I'd like to see 4.75 @ 150 1/8 on two stages (2nd stage is .034N same as 1st), but that will take a tight track. I am thinking on setting the Digiset @ .8 for 2nd stage activation. 18* on 1st stage & will try 10* on 2nd stage, both @ 5.00# FP, but with w/m injection I may have to advance the Timing 2-4* to clean up the Plugs (Autolites 3932). I hope I do not have to lean on the Launch Retard too much with the tighter converter, or the soft Rev Limit, but I'll start with 6* Launch Retard (12* total timing) and 1.0 seconds of ramp. Our track is far from the best in terms of traction.

Thanks again for the info sharing, and I will do the same. Good luck to you.
 

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Good info here. Now I just gotta get my plugs to look that clean on motor before I can spray it LOL
 

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Thx Power Mad. Your 632 seems very similar to my 665. IF the track is tight enough, and we do not have any gremlins with all the changes (tighter converter - 3900 stall, new 3.60 gear, vac pump, water / methanol injection, 2nd stage connected, data logger, etc.), it should roll. 1st stage .034N went 1.161 4.98 @ 143 1/8 7.76 @ 179, 3000#, old 3.60 gear, looser 4600 stall converter, 33 x 10.5W. I'd like to see 4.75 @ 150 1/8 on two stages (2nd stage is .034N same as 1st), but that will take a tight track. I am thinking on setting the Digiset @ .8 for 2nd stage activation. 18* on 1st stage & will try 10* on 2nd stage, both @ 5.00# FP, but with w/m injection I may have to advance the Timing 2-4* to clean up the Plugs (Autolites 3932). I hope I do not have to lean on the Launch Retard too much with the tighter converter, or the soft Rev Limit, but I'll start with 6* Launch Retard (12* total timing) and 1.0 seconds of ramp. Our track is far from the best in terms of traction.

Thanks again for the info sharing, and I will do the same. Good luck to you.
car sounds sweet ..I wish I had a data logger and 7531 .all i got is a 7al3 ..so far !!:mad:
 
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