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Author Topic: Mounting breather cover to frame?  (Read 504 times)

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Offline rupaulpierce

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Mounting breather cover to frame?
« on: March 21, 2020, 04:34:11 PM »
I picked up a modified Cb400f race frame today along with a spare engine in pieces. The breather cover has a mount welded to the top that attaches to the coil mounting bolts with a bracket. I’m guessing this was for rigidity... Any of you old sages know anything about this practice?



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Offline rupaulpierce

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Re: Mounting breather cover to frame?
« Reply #1 on: March 22, 2020, 04:29:18 AM »
Not sure what you’re getting at
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Offline my name is nobody

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Re: Mounting breather cover to frame?
« Reply #2 on: March 22, 2020, 09:31:43 AM »
sorry, having trouble with the link. Go to the cb350/400f service manual of this site and click on the "supplement"
section. What your looking for is on the first page, soon as you click on it. Sorry for the confusion...Not sure if it answers your specific question, but explains how the system works(with a diagram )
« Last Edit: March 22, 2020, 09:41:16 AM by my name is nobody »
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Offline rupaulpierce

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Mounting breather cover to frame?
« Reply #3 on: March 22, 2020, 09:36:18 AM »
The first page of the Cb400f supplement is about the breather hose...

http://manuals.sohc4.net/cb350/service_manual/SM350400_3.pdf


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« Last Edit: March 22, 2020, 09:39:02 AM by rupaulpierce »
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Offline my name is nobody

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Re: Mounting breather cover to frame?
« Reply #4 on: March 22, 2020, 09:46:55 AM »
I gotcha. not really any help...Maybe someone else will post what that piece is. I have a 550 and a 750,
please excuse my ignorance :)
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Offline rupaulpierce

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Re: Mounting breather cover to frame?
« Reply #5 on: March 22, 2020, 10:17:02 AM »
It’s the breather cover, I’m just wondering if anyone has ever seen this extra engine mount from the top of the engine to the frame. Same idea on any bike!


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Offline slikwilli420

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Re: Mounting breather cover to frame?
« Reply #6 on: March 22, 2020, 11:31:59 AM »
I've seen it done on cb750 engines before. Same idea here. The thought is that the top of the engine is unsupported and attaching it to the frame provides additional rigidity. Id use it if you can.
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Offline 754

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Re: Mounting breather cover to frame?
« Reply #7 on: March 22, 2020, 11:36:01 AM »
It can hurt any thing. 
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Offline rupaulpierce

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Re: Mounting breather cover to frame?
« Reply #8 on: March 22, 2020, 11:46:01 AM »
...but does it help


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