Main bearing modified

Discussion in 'PSI Superchargers Tech Questions' started by vwsamba, Mar 17, 2021.

  1. vwsamba

    vwsamba Member

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    I just changed out some M main bearings and the ones I took out the lowers had a short taper groove filed either side in line with the uppers full groove. The new ones are plain. Is this a good bad recommend mod?. Thx
     
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