Need some help from guys going 135mph + in the traps..
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02-25-2005, 05:34 AM
#9
have run both tr6's @ .030 and tr7's @ .030
I forget the real part number for the 7 right now, but its the next colder plug from the TR6.
TR8's would foul too quickly for my taste, and i was seeing very good plug readings with the 7's so I stuck with them.
traps high 160's to low 170's
I forget the real part number for the 7 right now, but its the next colder plug from the TR6.
TR8's would foul too quickly for my taste, and i was seeing very good plug readings with the 7's so I stuck with them.
traps high 160's to low 170's
02-25-2005, 07:34 AM
#10
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I have noticed my TR8s foul out quick as well. I'm not running a power adder but I trap 140 mph on motor. I tried to find a TR7 but they didnt seem to exist anywhere, I mean I have a part number but I couldn't find a distributor anywhere. I put the TR6s in the motor and they seem to work better in the colder weather, but this summer I will be going back to TR8s gapped .035.
Lee
Lee
02-26-2005, 08:30 AM
#12
actually, NGK lists these plugs
from Hot to Cold
5671A-7 doesn't seem to exist
here's their US racing plug application chart
from Hot to Cold
Code:
name:stock number TR5:2238 TR6:4177 BP7EFS:3526 R5724-8:7317 R5724-9:7891 R5724-10:7993
here's their US racing plug application chart
