DOHC Engine Expert Help Requuired

750mors

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Hi Guys and Girls,

This is my first post over here after being referred by a friend, he suggested this could be the place where I find the expert I so desperately seek.

I am in need of knowledge deeper than mine, I am nearing the rolling point of my cafe build on a 1982 CB750 DOHC and have hit a road block.

I was diligently following the instructions for the engine rebuild and noticed one part which I can't account for called the "oil control orifice" part number 11620-425-003 (part obsolete). There is almost zero info on this part worldwide and I want to continue the tradition of building the bike right so any info that anyone can share would be much appreciated.

Below is a picture of my lower crankcase, I don't know exactly where the orifice would fit. There's also the possibility that I may have jumped the gun though which is why I'm hoping to find an expert eye - is the part already in the gallery toward the top of the picture??? I have also included the microfiche too, it's part number 21.


Thanks in advance for taking the time to read, anything that can be added to the topic will be greatly appreciated.

Matt

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CB750C1981

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Hoping this helps someone out there but in the picture he posted the part is currently in its spot. It does not fall out easily and it’s very hard to replace. If yours looks like his picture then your good to go. Just blow air through it to clean it out.
 

Motogrady

Motogrady
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Try getting to a guy name Tools at this place. He guru on vintage Honda

 
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