APS kit: Spark Plug Gap and detonation/gas mileage
#1
APS kit: Spark Plug Gap and detonation/gas mileage
My last set-up spiked at 18psi and settled at 15psi. I ran a TR6 gapped at .28 because the tuner said it could blow the spark out. I did some reading when I did a search on this today and one guy said the tighter the gap, the hotter the spark but he also said that it increased the chances of detonation. Is this true??? He also said that the wider the gape, the less chance of detonation but there is an increased chance or fouling the plug when running rich. True? Why?
If a narrower gap truly increases the odds of the motor detonating, wouldn't it be smarter to run a wider gap like .35 and risk blowing out the spark or fouling a plug versus detonation?? Blowing out the spark plug or fouling it doesn't hurt the motor, it just kills performance right?
I am going to run TR6's again this time. I'm only wanting to make 650-675rwhp on pump only, no meth. I'm thinking it will take about 12-14psi. I already gapped the plugs at .28. Should I gap them at .32-.35 instead? And would it be too much stress on the tips to bend them back to .35 since I already gapped them at .28?
Also, does the gap have any corrolation with reduced gas mileage? Anyone noticed reduced gas mileage with a more narrow gap? And isn't the car suppossed to idle better and drive better with a wider gap?
If a narrower gap truly increases the odds of the motor detonating, wouldn't it be smarter to run a wider gap like .35 and risk blowing out the spark or fouling a plug versus detonation?? Blowing out the spark plug or fouling it doesn't hurt the motor, it just kills performance right?
I am going to run TR6's again this time. I'm only wanting to make 650-675rwhp on pump only, no meth. I'm thinking it will take about 12-14psi. I already gapped the plugs at .28. Should I gap them at .32-.35 instead? And would it be too much stress on the tips to bend them back to .35 since I already gapped them at .28?
Also, does the gap have any corrolation with reduced gas mileage? Anyone noticed reduced gas mileage with a more narrow gap? And isn't the car suppossed to idle better and drive better with a wider gap?
#2
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i would gap them at .030 but dont use the TR6 go with the NGK 8 the stock number is 7317 its alot cooler plug and will give you a better throttle response and idle quality plus with the 8 NGK says you can run high boost and it shouldnt detonate with the right tune ofcourse i put them in mine for a piece of mind of not worry about detonation
#3
I run a .20 gap but I'm also running about 30 psi and it will blow the spark out......about .20-.25 should be ok for you.......don't worry about detonation because of your spark gap.....you really should be running race gas and don't let A/F go above 11.3- 11.5 with pump gas......race gas has got a bit more give, but not much..
#5
i would gap them at .030 but dont use the TR6 go with the NGK 8 the stock number is 7317 its alot cooler plug and will give you a better throttle response and idle quality plus with the 8 NGK says you can run high boost and it shouldnt detonate with the right tune ofcourse i put them in mine for a piece of mind of not worry about detonation
#7
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i have no issues with my having NGK 8 in it ir runs smoother with thouse then the tr55 or tr6 and no issues with having fouling at all my last TA had then for like 2 years and they never gave me an issue
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#8
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Lots of the cold fouling problems relate to poor ignition systems, and dodgy old carbed engines running rich mixtures.
Dont forget we now have the ability to run "clean" AFR's most of the time, and the LS1 coils provide BIG sparks.
Ive been running NGK Iridium 8's for 6 months now, and zero fouling related issues.
Dont forget we now have the ability to run "clean" AFR's most of the time, and the LS1 coils provide BIG sparks.
Ive been running NGK Iridium 8's for 6 months now, and zero fouling related issues.