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Registered
Join Date: Oct 2004
Location: San Luis Obispo, CA
Posts: 320
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spark plugs for modified 2.2
After reviewing posts on the subject, I'm still unclear. Can someone recommend the best plug for:
2.2 with T crank, S pistons & cylinders, E cam, Webers Street use only. Mild climate. I've ordered, but not yet installed, a set of Bosch WP5DC's. Should I put'em in or get some others? Thanks in advance, Rob
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356robo 70 T Targa Looking for a 2.2,2.4, or 89 coupe |
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03-19-2009, 11:57 AM
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Registered
Join Date: Oct 2006
Location: MYR S.C.
Posts: 17,321
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put them in. look at them once a week if you drive it regulary. it is better to start cold and move up to a hotter plug if needed.
with carbs, you may find they foul from idle or cold starting, move up a range. its the richness at idle that the fouls plugs.
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86 930 94kmiles [_  _] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD88 BMW 325is 200K+ SOLD 03 BMW 330CI 220K:: [_ _] RUNNING: [__] NOT RUNNING:01 suburban 330K:: [_ _] RUNNING: [__] NOT RUNNING:RACE CAR:: sold |
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03-20-2009, 06:25 AM
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Join Date: May 2008
Posts: 2,948
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NGK BP7ES gapped at .032". Get the car hot, run the revs up, shut it off and pull a plug - if the electrode is light gray you're good to go, you don't want to see chartreuse/light green, then they're too hot.
A lot depends on your combo of ignition timing/distributor, carb venturis/jetting, etc; my recommendation is for a "typical" engine using the parts listed - yours might not be typical (odd deck height, etc.) so always sneak up on the right plugs/fuel mixture.
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Keep the Shiny Side UP! Pete Z. |
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03-20-2009, 06:40 AM
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