M20B28 turbo or supercharger
Moderator: martauto
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kaktus0505
- E30 Zone Newbie
- Posts: 16
- Joined: Fri Mar 29, 2013 11:00 pm
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.
Turbocharger will rise the exhaust backpressure. Combined with high cam overlap and high CR the engine will tend to knock earlier.