SOHC.co.uk Forums > CB750

Spark plug nightmare

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Nurse Julie:

--- Quote from: Matt_Harrington on June 29, 2024, 10:26:34 AM ---On a 750, can you just remove the head whilst the engine is in place in the frame?

--- End quote ---
No, it's an engine out job even to get the top breather cover off of the 750/4.

Nurse Julie:
Take it to a reputable bike engineer. An insert can be inserted with the engine in the frame (exhausts removed). With exhausts still fitted, it can be done but very, very awkward. Watch for swarf going down the hole.

Pauarc:
Trouble is, it’s number two cylinder and you can’t get straight onto it very easy

Nurse Julie:

--- Quote from: Pauarc on June 29, 2024, 11:02:43 AM ---Trouble is, it’s number two cylinder and you can’t get straight onto it very easy

--- End quote ---
You would be better off for piece of mind having all 4 done at the same time. It's 50+ year old alloy, if one has given way, it may not be long before the others give way.

Matt_Harrington:

--- Quote from: Nurse Julie on June 29, 2024, 10:44:15 AM ---
--- Quote from: Matt_Harrington on June 29, 2024, 10:26:34 AM ---On a 750, can you just remove the head whilst the engine is in place in the frame?

--- End quote ---
No, it's an engine out job even to get the top breather cover off of the 750/4.

--- End quote ---

Thanks Julie

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