Honda CBX – PDF Download


19 Page – PDF Download – Complete Series – Honda CBX


19 Page – PDF Download – Complete Series – Honda CBX

“Preparation top end strip

Editor Bob Berry’s Honda-6 engine was delivered to Tadcaster-based expert John Wyatt for its rebuild.

What did John find upon stripping down the 33,000-mile motor? Brian Crichton’s words and pictures tell all.

John Wyatt has been working on CBX models for ten years. He bought a new CBX in September 1980 and has it now – in such pristine condition it has to be seen to be believed. Since he started showing bikes four years ago John has won at least one trophy for each bike he has restored.

Bob’s engine is being stripped by John simply because he rang us offering to do it after Bob mentioned in the magazine that he had bought the bike. It wasn’t the intention to have the engine rebuilt at all – but such was the interest in the big Honda that we decided to go ahead.


Usual problems with the Honda six-cylinder engine are:

Burnt exhaust valves. If you use a bad six-into-one exhaust system the exhaust valves will burn out. They can also burn out with a standard system if the header pipes are not securely fixed into the head and properly sealed. The motor then draws in air and runs weak. This can happen on any cylinder.

Oil consumption. All the original unfaired CBX models suffer from high oil consumption at sustained high speed, especially at over 100mph. The cure us included in the stripdown story.

Cylinder head gasket leak. Easily cured by the new type Honda gasket (Part No 12251422010). The new one has adhesive around the oil gallery holes and around the cam chain tunnel. A blown gasket can be a reason for high consumption because the crankcase can be pressurised and blow oil out through the breather…”

19 Page – PDF Download – Complete Series – Honda CBX

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