valve guide interference fit

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etsjw
Posts: 19
Joined: Wed Jul 19, 2017 2:05 am

valve guide interference fit

Postby etsjw » Mon Dec 17, 2018 2:31 pm

Does anyone have any guidance regarding the interference fit between the valve guide OD and the ID of the guide hole in the head casting?
In other words if the head casting guide hole is xxx mm how much larger should the guide OD be?
Thanks

LaceyDucati
Posts: 521
Joined: Sun Sep 19, 2010 10:30 pm
Location: Wales UK
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Re: valve guide interference fit

Postby LaceyDucati » Mon Dec 17, 2018 11:44 pm

I work on 0.03 to 0.035mm, any more will push the guide off centre (more) and stretch the hole. any less than 0.025mm and it's likely to come loose. Regards Nigel

etsjw
Posts: 19
Joined: Wed Jul 19, 2017 2:05 am

Re: valve guide interference fit

Postby etsjw » Tue Dec 18, 2018 12:47 am

Thanks, Nigel
John


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