Matchless top end rebuild: Part 3

Our single-cylinder Matchless G3L had its head rebuilt last month, so now it’s time to start putting it all back together.

Tenacity and perseverance by Hutch (HTE motorcycles 01328 700711)

Words, photography and inane questions by Matt

Read more and view more images in the April 2019 issue of CBG – on sale now!

Some engines have a bevel at the base of the bore to help the rings in, but the G3 needed a ring compressor. It went on nicely and smoothly. Thanks to the ‘controlled build’ procedure (basically bagging and labelling during the strip) we know the barrel had the wrong bolts fitted, so we found some proper ones.


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