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Registered
Join Date: Feb 2003
Location: SF Bay Area, CA
Posts: 1,262
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Need spark plug recommendation
I am finishing a new engine build and need your recommendation for what spec spark plugs to run in the engine. Some information on build:
3 liter Stock heads and valve size Aascomotorsports valve springs and retainers Compression ratio 10.5 : 1 Cams Elgin 306/288–102 Twin plug S spec MFI Thanks in advance for your responses Cheers, Dan
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DJP; 74 911 3.6 Vram in progress 82 911sc 3.6 street/track 76 930 stock garage queen 84 911 Wide Body 225,000 miles! 72 914 3.0 track; 90 C2 |
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10-30-2021, 09:36 AM
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Registered
Join Date: May 2004
Location: Boulder, Colorado
Posts: 7,275
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Plugs aren't all that expensive. I'd start on the cold side, maybe NGK 7s or 8s? And see how they do. I think only if you run way too hot a plug could you get into some real trouble.
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11-02-2021, 04:03 PM
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Registered
Join Date: Feb 2003
Location: SF Bay Area, CA
Posts: 1,262
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Walt
Thanks for the advise.
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DJP; 74 911 3.6 Vram in progress 82 911sc 3.6 street/track 76 930 stock garage queen 84 911 Wide Body 225,000 miles! 72 914 3.0 track; 90 C2 |
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11-03-2021, 06:58 AM
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Non User
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I’ve been having trouble getting BP7ES even the resistor version (BPR7ES), which my engine likes. I got some 8s and they seem to fire well.
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Infraredcalvin - AKA Pat '76 Turbo Carrera #311 - Factory LSD, Sport Seats ‘71 914-6 GT 3.4L twin plug track car '75 914 GT clone project '71 914 track car, fresh 2165 FAT motor (for sale soon) |
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11-03-2021, 09:04 PM
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1976 Porsche 930 3.0 turbo
The Beater
71EURO6
