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copbait73 copbait73 is offline
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Join Date: Nov 2003
Location: Chesterfield IN
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Originally Posted by RarlyL8 View Post
I thought the resulting effective C/R of the standard increase to 1.0bar on a 7.0:1 930 engine interesting because it falls nicely within what is considered a safe zone on your graph.
The operating environment for any vehicle can be very wide, from well below freezing to well above 100F at varying elevations. Having this graphed or mathematical information is necessary to make decisions of how far you can push your engine parameters given the environment it will operate.
I agree entirely, I would do it for street. I may be cautious on the very few extreme summer days here in IN. Regarding the factory TURBOS, there should be some leeway. These engines have mechanical timing and no knock sensors so there must have been some built in consideration for marginal octane and high ambient temperature.
Old 03-09-2008, 12:36 PM
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