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Is This Lean?

AverageA31

By AverageA31,
in Engines & Forced Induction

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AverageA31 Contributor

AverageA31

Posted
Posted

Gday All, got my cefiro up and running with a few mods(car was bought minus motor and box). It seems to go ok by the seat of my pants

but after a short drive I pulled my plugs to check the gap (0.8mm)and this is what they look like.

post-86037-0-01295900-1331248128_thumb.jpg

post-86037-0-45555900-1331248452_thumb.jpg

It is already booked in for a dyno this week but the shop is 1/2 an hour away-is this safe to drive that far?

Mods:

Bosch 044 fuel pump

GTR injectors-clean and tested ok

Z32 AFM

GT2871 turbo

FMIC

3 inch turbo back exhaust

ECU remap-tuner has checked and confirmed against his other files that its correct for my mods.

thanks for any help

Jes

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SargeRX8 Grand Master

SargeRX8

Posted
Posted (edited)

Yeah these are copper plugs, I didnt know whether to go 6 or 7 heat series as there are tons of guys doing both,

my tuner said 6 so I did that. what would the difference be with a 7 plug?

Jes

it's just a safe measure, 7 will stay cooler when the engine is running above standard measures. Lower the risk of pre ignition. Repco should have them, super shit won't.

Edited by SargeRX8
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HYPED6 Collaborator

HYPED6

Posted
Posted

Its very hard to tell lean and rich from plugs when you are running fuel with no lead in it.

What I can tell you is that your cylinder temps are too cold for that plug or your plug is too cold for your cylinder temps.

The white porcelain of the plug should be clean and white much further up the plug than where it is.

You could run a 5 in your engine, or lean it out to up your cylinder temps.

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SargeRX8 Grand Master

SargeRX8

Posted
Posted

Its very hard to tell lean and rich from plugs when you are running fuel with no lead in it.

What I can tell you is that your cylinder temps are too cold for that plug or your plug is too cold for your cylinder temps.

The white porcelain of the plug should be clean and white much further up the plug than where it is.

You could run a 5 in your engine, or lean it out to up your cylinder temps.

His op said, new plugs out after a short drive. I really doubt that short drive is substantial time to darken the porcelain...

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