Thread: 2.4 engine rebuild w/modifications
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911pcars 911pcars is offline
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Join Date: Jul 2000
Location: So. Calif.
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Twin plugs usually not necessary unless compression ratios are not greater than 9.5:1, especially with higher lift/duration cams that lower the effective compression pressure.

Sherwood
Old 12-22-2020, 04:18 PM
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