Please read my Plugs
08-16-2011, 06:58 PM
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Please read my Plugs Take a look at these plugs and see what you think. I just wanted to check after upgrading to 6an line and 4an to solenoid. Wanting to make this a little conservative for now, soon will be changing plates.
My wideband says 12.5-12.8 on NA. On nitrous it goes to 10.8-11.2.
Br7's, 93 octane, with 116 in the stand alone at 58-60psi.
Plug on the left was 14 degrees 73/40 jets.
Plug on the right was 73/38 jets, was suppose to be 14 degrees, but looking at the log it was actually 15 for most of the run, then dropped to 14 at the very end.
I can clearly see the timing mark on the left plug. Still needs less timing right?
I can hardly see any color on the white porcelain?
My wideband says 12.5-12.8 on NA. On nitrous it goes to 10.8-11.2.
Br7's, 93 octane, with 116 in the stand alone at 58-60psi.
Plug on the left was 14 degrees 73/40 jets.
Plug on the right was 73/38 jets, was suppose to be 14 degrees, but looking at the log it was actually 15 for most of the run, then dropped to 14 at the very end.
I can clearly see the timing mark on the left plug. Still needs less timing right?
I can hardly see any color on the white porcelain?
08-16-2011, 07:08 PM
#2
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Left looks BL lean...
Right looks lean and hot,+ too much timing.
Best I can tell on laptop....and where they discolored before install ? (blue/purple at threads ?)
Right looks lean and hot,+ too much timing.
Best I can tell on laptop....and where they discolored before install ? (blue/purple at threads ?)
08-16-2011, 07:20 PM
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I was thinking the rainbow color indicated heat too. Would going to br8's help this? Or is it a result from the fuel mixture?
08-17-2011, 04:45 AM
#4
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Most plugs are lower number = colder. You'll have to look that up for that plug (and I'd say 2 steps coolder to start)
And the good thing.... no black/shiney specs.
And the good thing.... no black/shiney specs.
08-17-2011, 12:51 PM
#6
the plugs to hot. go at least 1 colder. timming looks close depending on how long that run was compared to a full run. the plug being to hot makes it look leaner than it is. so id leave the fuel alone change the plugs and get another look. you need a good 4-5 second pull minimum.
08-17-2011, 03:21 PM
#7
the plugs to hot. go at least 1 colder. timming looks close depending on how long that run was compared to a full run. the plug being to hot makes it look leaner than it is. so id leave the fuel alone change the plugs and get another look. you need a good 4-5 second pull minimum.
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08-17-2011, 05:56 PM
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08-17-2011, 06:43 PM
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Thanks guys. I have some B8Efs on the way. Going to give them a try.
I've been reading a lot about plugs. On article said- If the plug is too hot, the heat will actually clean away the fuel ring. Might be whats happening on these Br7's
I've been reading a lot about plugs. On article said- If the plug is too hot, the heat will actually clean away the fuel ring. Might be whats happening on these Br7's
