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Registered
Join Date: Aug 2007
Location: Austin, TX
Posts: 328
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Help me read my spark plugs
Hi All,
I'm trying to get my new motor set up and tuned. In short, it's a 2.7 with euro pistons and E-cams. Compression is 8.8:1. Please see the link in my signature for any other pertinent info. I'd like to see what the pros have to say about my plugs. FWIW, these do not reflect an immediate shutdown after a hard pull. I had to drive 500 yards from the highway to my garge. To my inexperienced eye, I have 1) too much timing, and 2) too hot a plug. The plugs have maybe one hour of total run time on the break-in. The plugs are Bosch "5"'s. Let me know what you think.... --Jaybird   
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11-03-2010, 06:36 AM
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Registered
Join Date: Jan 2006
Location: Santa Barbara, CA
Posts: 2,307
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Take a look at the NGK site for wisdom on reading plugs. It's pretty simple.
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jhtaylor santa barbara 74 911 coupe. 2.7 motor by Schneider Auto Santa Barbara. Case blueprinted, shuffle-pinned, boat-tailed by Competition Engineering. Elgin mod-S cams. J&E 9.5's. PMO's. 73 Targa (gone but not forgotten) |
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11-03-2010, 07:18 AM
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Senior Advisor
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The don't look too bad, not enough time on the plugs to get a good picture. get a AFR meter for that fine tuning. Took me awhile but found out you have carbs (on page 8), now you really need a meter (a wide band recording one) that will really help choosing the correct jets. But, I think your close.
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08 Cayenne Turbo Last edited by James Brown; 11-03-2010 at 11:25 AM.. |
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11-03-2010, 11:15 AM
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