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Registered
Join Date: Mar 2000
Location: sunnyvale, CA
Posts: 18
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Which plugs and what range (Is W7DC hotter than W5DC?)
Hi all;
'72 2.4E with webbers. Am using W7DC plugs now but still getting some popping. Have to richen idle mix screws more than I like to get rid of pop at 3000rpm. Which plugs do you recommend? Are W5DC hotter or cooler than W7DC ? Thanks all Russ |
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02-25-2002, 04:17 PM
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Russ:
I was running the 7s in my 2.7 and got a lot of popping when the motor was cold. The local wrench sold me 5s, and lo and behold no more popping ever. I don't know whether it is coincidence or the plugs. I can't remember which is hotter. May 1 cent.
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'94 CMC Firebird Trans Am '86 951 LS1 (C-2) Gone  '77 911 3.2 (C-1) Gone but not forgotten. http://www.pelicanparts.com/MotorCity/marcesq1 http://www.youtube.com/user/958Fan#p/u |
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02-25-2002, 04:28 PM
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Join Date: Mar 2000
Location: sunnyvale, CA
Posts: 18
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What gap do you recommend?
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02-25-2002, 04:30 PM
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.55mm
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'94 CMC Firebird Trans Am '86 951 LS1 (C-2) Gone '77 911 3.2 (C-1) Gone but not forgotten. http://www.pelicanparts.com/MotorCity/marcesq1 http://www.youtube.com/user/958Fan#p/u |
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02-25-2002, 04:37 PM
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Russ W7DC plugs are hotter than W5DC plugs.With Bosch spark plugs the higher the number the hotter the plug,unless there is a zero preceding the number.{eg.06 07 08 09 colder than 2 3 4 5 6 7 8}.
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81SC Coupe Tony Kart/Yamaha |
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02-25-2002, 04:52 PM
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1977 Porsche 911s 3.2
951
1981 Porsche 911SC
