Les Bengtson's Classic MG Pages: Articles:
(MAY APPLY TO OTHER VERSIONS OF THE “B” SERIES ENGINES, BUT I HAVE NOT CHECKED.)
Note: See other article (Bolt Sizes) for notes on how to use taps and dies and how to determine sizes of studs and bolts.
(Inside the head, there are four air injectors which may be removed from the head as desired. They can be cleaned using a 1/8” drill bit for the main body and a number 43 drill bit for the smaller hole on the end near the valve.)
There are five brass plugs that go into the oil galley on the front and rear of the block. These can be removed and the holes threaded ¼” pipe thread (this is a tapered tap). I removed them by drilling and tapping them ¼-20, then using a socket head cap screw and a socket to remove them. The holes were then tapped ¼” tapered pipe thread and hex headed plug screws inserted, with sealer, to cap them off after cleaning of the oil passages. The right rear must have the plug shortened very slightly to prevent its interfering with the oil line take off at the right rear of the block. The oil passages may also be re-sealed using the factory style plugs.
This monograph may be reproduced only for non-commercial use without other permission of the author. Reproduction for commercial use only by written permission.
Copyright © 2001 by Les Bengtson
CustomPistols.com Home - Classic Sports Car Pages - Tooling for Classic MG Restoration - L. Bengtson Arms Co.