SOHC.co.uk Forums > CB350/400

Car type oil filter on 400/4 ???

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K2-K6:
I crossed over there with you Julie,  that external gallery with bolted cap is I presume feed from oil pump into filter chamber.

Nurse Julie:

--- Quote from: K2-K6 on March 31, 2019, 08:06:38 PM ---I'm not familiar enough with the 400 engine to say that it's normal just from that picture,  you need another to compare as Julie says.

But my read of it is that it's the manufacturing process that needs to go through there to connect an internal gallery to the filter output route into the engine.

Looks like they've machined then plugged it to get in there that way. 

If left open,  it would just allow the oil to bypass the filter route on it way to the internal galleries.

--- End quote ---
Just what i was going to say Nigel 👍👍👍

AshimotoK0:
Thanks everyone ... I also checked my 500K0 crankcase earlier tody  and it has a similar blacking plug ... so I guess I can put his mind at rest.

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