Hi All
Just started to rebuild bottom end of my 400/4, have started to check big end bearing shell clearance with Plastigauge, the 1st one I checked is ,038 microns (.0015") Tolerance in Haynes Manual reads 20-44 microns is this full wear limit? Have purchased new shells already but they are not giving me any better result than the existing one which seems to look ok (see attached Photos), only thinking that if its better long term to reduce the clearance then I'll get the next shell size up, whats the best way forward!!! or am I being to anal !!!any advice would be much appreciated!!
Regards
Simon
