Hello guys. Just finished my VRT Corrado project after a few years working on it. Forged internals, 6262 ball bearing Precision turbo, @ 28psi, Walbro 450 ,268TT turbo cams, 1000cc injectors, 7/16" fuel line, 3" exhaust, ngk bkr7e spark plugs gapped at .028, etc. Took it last week to D3 Performance & engineering in Houston, Tx. for a Dyno tuning, it sounds amazing and all, at first it dynoed at 440 whp, and after a couple more pulls we got 487whp, everybody happy and so, but then the guy checked the spark plugs and #4 ground electrode was melted, he replaced with a new one, tried it again, and it also melted it . so he said it could be a bad injector due to it maybe was leaning out , but the guy said I have plenty of fuel and the injectors running @ 50% duty cycle. We towed the car back home , removed the injectors thinking #4 was bad, and took them to a shop where they checked them out and all of them are perfectly good ( actually, they're new). we then put them back in the car, with all new plugs and wires, took it for a spin, it feels super strong, but when we came back home and checked on the plugs, #4 and also #6 was also melted the ground electrode.
My question is, What could be the cause of it? If its not a bad injectors and its not leaning out, Could it be sonething to do with the timing or the tuning itself? BTW, Im using Megasquirt 1extra .
Any help or advice will be highly appreciated. Thanks in advance.
vr6 turbo melting spark plug ground
in Engine Maintenance and Problems
Posted
Hello guys. Just finished my VRT Corrado project after a few years working on it. Forged internals, 6262 ball bearing Precision turbo, @ 28psi, Walbro 450 ,268TT turbo cams, 1000cc injectors, 7/16" fuel line, 3" exhaust, ngk bkr7e spark plugs gapped at .028, etc. Took it last week to D3 Performance & engineering in Houston, Tx. for a Dyno tuning, it sounds amazing and all, at first it dynoed at 440 whp, and after a couple more pulls we got 487whp, everybody happy and so, but then the guy checked the spark plugs and #4 ground electrode was melted, he replaced with a new one, tried it again, and it also melted it . so he said it could be a bad injector due to it maybe was leaning out , but the guy said I have plenty of fuel and the injectors running @ 50% duty cycle. We towed the car back home , removed the injectors thinking #4 was bad, and took them to a shop where they checked them out and all of them are perfectly good ( actually, they're new). we then put them back in the car, with all new plugs and wires, took it for a spin, it feels super strong, but when we came back home and checked on the plugs, #4 and also #6 was also melted the ground electrode.
My question is, What could be the cause of it? If its not a bad injectors and its not leaning out, Could it be sonething to do with the timing or the tuning itself? BTW, Im using Megasquirt 1extra .
Any help or advice will be highly appreciated. Thanks in advance.