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Author Topic: Advice on valve cover hole  (Read 707 times)

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Offline lparm

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Advice on valve cover hole
« on: November 07, 2018, 05:42:49 AM »
I am restoring a 1978 K8 and found this hole in the valve cover under the breather cover.
Anyone seen this before? Should it be welded? replaced?
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Offline slikwilli420

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Re: Advice on valve cover hole
« Reply #1 on: November 07, 2018, 05:56:43 AM »
Thats how they are cast, nothing to worry about. The valvetrain breathes through that area, and with the breather cover on, you won't have any issues.
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Offline lparm

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Re: Advice on valve cover hole
« Reply #2 on: November 07, 2018, 06:56:50 AM »
thats good news, thanks
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Offline flybox1

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Re: Advice on valve cover hole
« Reply #3 on: November 07, 2018, 06:58:42 AM »
Yep...its normal.
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Offline Motorcycle jones

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Re: Advice on valve cover hole
« Reply #4 on: November 07, 2018, 10:41:29 AM »
That is the improved valve cover design .
The 1978 model had 22 such improvements over the earlier models.
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Offline ekpent

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Re: Advice on valve cover hole
« Reply #5 on: November 07, 2018, 04:12:39 PM »
Quote from: Motorcycle jones on November 07, 2018, 10:41:29 AM
That is the improved valve cover design .
The 1978 model had 22 such improvements over the earlier models.
  Hey MJ. Is there a published list of those 22 changes somewhere to read ? This is not a call out or anything, it would just be fun to read up on all the differences since I don't do 750's later then 1976 generally as a rule.
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