 Spark plugs, Bosch |
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| Ray Warren |
 Mar 5 2004, 07:20 PM
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#1
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Member  Group: Benefactors Posts: 415 Joined: 1-October 03 From: Canada Member No.: 1,214 Region Association: None   |
I read an earlier post about spark plugs and Brad
had mentioned that they use Bosch W7DC. I picked up some W7DC plugs today but the electrode seems to protrude farther than the W7CC plug. What should I gap them at? |
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| Ray Warren |
Mar 6 2004, 10:08 AM
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#2
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Member Group: Benefactors Posts: 415 Joined: 1-October 03 From: Canada Member No.: 1,214 Region Association: None |
Has nobody ever gapped there plugs?
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| weird_looking_cactus |
Mar 6 2004, 10:12 AM
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#3
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Cactus Group: Members Posts: 225 Joined: 16-February 04 From: St, George UT Member No.: 1,660 |
Im not sure but I gab mine at .28
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| McMark |
Mar 6 2004, 01:29 PM
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#4
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
My car with Pertronix ran at .050".
According to the Bosch Spark Plug Application Guide the spark plug code breaks down as follows: W - 14 mm threads 7 - Heat range (2 = coldest, 11 = hottest) D - Thread reach 3/4" (0.708" with tapered seat) Extended Tip Electrode C - Copper core spark plug W - 14 mm threads 7 - Heat range (2 = coldest, 11 = hottest) C - Thread reach 3/4" Regular Electrode C - Copper core spark plug |
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| Brett W |
Mar 6 2004, 05:01 PM
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#5
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Advanced Member Group: Members Posts: 2,856 Joined: 17-September 03 From: huntsville, al Member No.: 1,169 Region Association: None 
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THrow the bosch plugs away and get some NGK B7ES or maybe a B6ES depending on temp, engine setup and driving style.
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