M20B28 turbo or supercharger
Posted: Wed Sep 13, 2017 11:39 am
Hi. I have m20b28 m52 crank with have 10.8:1 compression schrick 284/272 cam can I still add compressor or soft turbo? Many thank
10.8:1 is a high CR for a boosted 2-valve engine. I would try supercharger with max 0.6bar of boost on 98roz. Your cam has too much overlap for higher boost levels - the pressurized air will be "wasted" into the exhaust.
Turbocharger will rise the exhaust backpressure. Combined with high cam overlap and high CR the engine will tend to knock earlier.