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Registered
Join Date: Dec 2001
Posts: 4,313
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Xdi spark plug gap?
Recommended spark plug for a single plug Electromotive xdi set up. Using Bosch w3cs plugs?
thanks.
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Harold '79 930/DP935 (sold) '68 VW 3.3 Turbo Crewcab |
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04-27-2018, 10:06 AM
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Registered
Join Date: Aug 2007
Location: Austin
Posts: 585
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Stock Street Engine 0.045”-0.060” (1.1mm-1.5mm)
High Performance Street 0.030”-0.035” (.75mm-.9mm) Alcohol High Compression 0.025” (0.65mm) High Power 75 -115 HP per Cylinder 0.025” (0.65mm) Over 115 HP per Cylinder 0.022” (0.55mm) Over 12:1 CR or Over 14psi Boost 0.022” (0.55mm) http://electromotive.com/wp-content/uploads/2015/05/XDI-v1.7.pdf |
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04-27-2018, 10:34 AM
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Slantnose from HELL
Join Date: Dec 2004
Posts: 888
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Been running the F4CS plugs at .024. same thing as the W4CS but with the difference of having a 5/8 hex instead of a 13/16 hex. Makes it easier when changing them. More room. On your next set buy F3CS. You should be able to get away with .028 at your power level.
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It changes from time to time..... |
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04-27-2018, 12:19 PM
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