147 engine compression ratio? - Alfa Romeo Forum
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(Post Link) post #1 of 1 Old 22-09-03 Thread Starter
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alfa 147 turbo

147 engine compression ratio?

Does anyone know the engine compression ratio that Autodelta use for turbocharging the 147 1.6 litre?I rang Autodelta but Jano who does the work is on holidays.I read on the net that Autodelta reprofile the pistons and drop the compression from 10.3-1 down to 8.6-1 to handle the boost pressure.Is this correct.My engine is being rebuilt as I want more horsepower so I need to know this.Thanks -Pat doyle
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