NGK TR6 with H/C engine? Why not?
NGK TR6 with H/C engine? Why not? The old spark plug rule of thumb was one heat range colder for every 60 additional HP. A strong H/C 346ci LSX engine makes around 450rwhp which is close to 200HP more than a stock LS1. Why wouldn't we want to use the TR6 plugs in place of the standard heat range TR55 version? What possible disadvantage(s) would the colder plugs have? The colder plugs should help to pull more heat from the combustion chamber.
Originally Posted by TORCHD 02 TA
Its a colder heat range plug than the TR55, but not due to a smaller gap. The physical design of the plug is what determines how much heat is dissipatates not the gap.
Unless the car is driven at light loads in artic temps why not use the TR6 in 400rwhp+ cars?
The reason I asked this question is because all I ever see being suggested on this board is the TR55 and never the TR6 unless it is a NOS car.
Originally Posted by TORCHD 02 TA
Its a colder heat range plug than the TR55, but not due to a smaller gap. The physical design of the plug is what determines how much heat is dissipatates not the gap.
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Originally Posted by V8er
Unless the car is driven at light loads in artic temps why not use the TR6 in 400rwhp+ cars?
The reason I asked this question is because all I ever see being suggested on this board is the TR55 and never the TR6 unless it is a NOS car.
The reason I asked this question is because all I ever see being suggested on this board is the TR55 and never the TR6 unless it is a NOS car.
You got it right man, with the added power you want a colder plug since the increase in cylinder pressure will generate more heat which needs to go somewhere. The colder plug will get rid of that extra heat.
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Originally Posted by c5_ls1_6spd
Im making over 450 and using TR55s also. No problems here with fouling or sputtering, etc.
Originally Posted by c5_ls1_6spd
Im making over 450 and using TR55s also. No problems here with fouling or sputtering, etc.
No doubt your TR55s are working but would TR6s be better?
Originally Posted by V8er
By this same logic a 1.75" exhaust should be fine if you are making 450rwhp with it on the car
No doubt your TR55s are working but would TR6s be better?
No doubt your TR55s are working but would TR6s be better?
Originally Posted by V8er
By this same logic a 1.75" exhaust should be fine if you are making 450rwhp with it on the car
No doubt your TR55s are working but would TR6s be better?
No doubt your TR55s are working but would TR6s be better?
Originally Posted by c5_ls1_6spd
why would TR6s be better?
