I (Syncrohead) said: >> Also, the pressures created by the piston compression are far higher than any turbo >>can create during the intake stroke. Sstones replies: >But... Once the turbocharged intake strok is over... You get a >compression stroke at a much higher pressure, there in lies the problem. I reply: Ah-hah! That makes sense. With more gas (& pressure) in the cylinder at the beginning of the compression stroke, there will be higher ultimate pressure at the end of the stroke. This must be why turbo engines generally run a lower compression ratio - to allow for the additional compression effect of the turbo. Thanks, Jim Davis 87 GL Syncro 88 GL Wolfsburg
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