Legal Bill said:
Here are the part numbers on the boxes. I think most of this is for the later 1098 cc engine with the wider main bearings. But I would appreciate knowing what other cars they may fit.
First the bearings
3M2215AL-STD (Says to suit Datsun on the box, but as I recall they also fit BMC)
3M2215AL-010 (same as above, but 10 over)
3C4306-STD (Say to suit BMC)
4B1891-010 (To suit BMC)
4B2201-010 (To suit BMC)
Valves
RV34274
Thanks so much for looking these up for me.
Best regards,
Bill
Bill:
3M2215AL Main Bearings, Fits 1622cc MGA's/Austin A60's, The bearing material is AL-F820 Reticular Aluminum with steel backing.
3C4306-STD Cam Bearings, Fits MGA, MGB and Austins. Most B Type engines, Bearing material is WM-F23 white metal bearing material with lead and steel backing.
4B1891 Rod Bearings, MGA, Early MGB to '64, Austin A50, A55, A60. Check bearing color and back shell for material code. Very shiny is aluminum, dull gray is lead/tin or lead/indium overlay, Suffixes SA are aluminum, LC will be lead copper. Repco was known for using lots of ACL produced bearings. ACL makes good tri-metal bearings. There may be an ACL symbol on the back of the shell with the part number and a date. If you are not sure, a little scrape of the bearing on the curved edge towards the crank rod filet will tell. Don't scrape on the mating surfaces/parting line or on the bearing surface. Copper will show through quickly.
4B2201 Rod Bearings, Know this one by heart. Rod bearings for Spridgets 948/1098/1275 and other A Series types using the 1.625" STD journal diameter. Same bearing material comments as for 4B1891.
RV34274 Intake valve, Another memory one. 1275 Spridget A-Series Intake valve. 1.312" nominal head diameter, 3.57" stem length and .281 stem diameter. Silicon-Chrome material. Type CG (1275) keepers. Used in 12G940 (67 Only) and 12G1316 heads.
Hope this helps,
Mike