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964 valve guide help needed

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Old Feb 25, 2019 | 03:53 PM
  #1  
Maciej964's Avatar
Maciej964
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Default 964 valve guide help needed

Hi.
During engine rebuilding problem has occured with too loose valve guide.
Even when using oversize one it still goes loose.
Part number is 964.104.321.50.
Do you have some idea what is the best solution?
Are there bigger than standard factory sizes?
Is there some good source for it?
Thank you.
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Old Feb 25, 2019 | 09:52 PM
  #2  
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jonathant
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From: Fairfax, VA
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One of the guys may have an answer for you here, but try posting your question over in the Pelican Parts 911 Engine Building Forum also (http://forums.pelicanparts.com/911-e...uilding-forum/) that one is pretty specialized on engine build details and the posters include some very experienced builders.
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Old Feb 26, 2019 | 07:03 AM
  #3  
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ras62
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From: Cheshire UK
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what size are the valve stems when measured and are they within spec? Could it be possible your engine has 993 valves fitted?
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Old Feb 26, 2019 | 02:53 PM
  #4  
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Maciej964
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Originally Posted by ras62
what size are the valve stems when measured and are they within spec? Could it be possible your engine has 993 valves fitted?
Thanks for feedback. I need larger than 1st ovesize.
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