M20B28 turbo or supercharger

Moderator: martauto

User avatar
kaktus0505
E30 Zone Newbie
E30 Zone Newbie
Posts: 16
Joined: Fri Mar 29, 2013 11:00 pm

Post 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
Top
User avatar
schaper
E30 Zone Newbie
E30 Zone Newbie
Posts: 5
Joined: Mon Feb 19, 2018 11:00 pm

Post Fri Feb 23, 2018 9:38 am

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.
Top

Return to “Turbo / Supercharger”