Quote:
Originally Posted by ERA Chas
I just made the switch to NGK's from Accel 416's. I contacted their tech line by email and got excellent advice from their tech guy.
I make the same power as you with a 427-sized FE with a strong cam and suffered the same sooty plug problem. The tech suggested their #4 heat range, platinum tip, fine wire plug in the G-Power series. It is NGK #2685, FR4.
Here:
http://www.ngksparkplugs.com/product...r.asp?mode=nml
I have a 6AL so use a .045" gap. Presto-plugs I can actually see the insulator tan/white and off idle performance is noticeably cleaner. Shifts at 6600 are clean with continuous power. They have perfect manners in street use. A hotter plug is a good thing.
Be sure your heads will accept a .750" reach, projector nose, resistor plug. They cost $3.39 ea. at Summit. |
I don't know-maybe I type in invisible ink.
You ask for NGK's, I give you NGK's. I give you the same problem as yours, I give you the NGK tech guy, the plug recommendation, the construction and the place to buy and cost. And I get the desired results you seek and you don't even question or acknowledge the advice. This was not 'some guy said they work' advice-this is actual experience.
You ignore the entire post because AFR specs different plugs
for the heads-not the whole motor combination. And you have a near melt-down. If those Autos are too hot for the combination-that's no guarantee that's these are too hot too-these are platinum and fine wire with different characteristics than standard plug.
Why didn't you even
try them for $30 worth of plugs? Makes you not want to try to help some guys.