Ford Model A - Cover for rear camshaft bushing

The rear camshaft bushing is normally open and the cause for oil leaks. It is normally only covered by a gasket between the Engine block and the flywheel housing. If the flywheel housing lays not properly on the engine block, an oil leak is the result. What I did is to close the bushing with a plug. This modification is not my idea, it is published in the book 'The Model A Engine' written by William H. McRee and Paul H. McRee (Page 58/59). In the book they used an existing freeze plug and I have added a blueprint for those who want to make one.

Nockenwellen Deckel

This is the end of the camshaft with the self made plug.

Nockenwellen Deckel

My plug was newly made on a lathe.

Nockenwellen Deckel

This are the blueprints to make your own plug. To get a better view just click here onto blueprint or into the picture.

Nockenwellen Deckel

The camshaft was too long and I had to grind it a little bit until I hat an end play of about 0,5mm between camshaft and freeze plug.

Nockenwellen Deckel

This is how the rear bearing with camshaft inserted looks like.

Nockenwellen Deckel

The freezing plug is a little bit oversized and can be inserted with a hammer. Then make sure that the camshaft does not get in contact on the inner side of the plug. Now you should never see any oil under your flywheel housing.




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