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  #1  
Old 04-12-2018, 05:02 AM
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blueflyer blueflyer is offline
 
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Default What Material are Lycoming Cylinder Studs Made of?

Does anyone know what material the Lycoming Cylinder studs made out of? Are they carbon steel?
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Old 04-12-2018, 11:32 AM
lr172 lr172 is offline
 
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I do not know, but assume they are a carbon steel alloy that would resemble the elemental makeup of a common Grade 5 bolt.
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Old 04-12-2018, 03:42 PM
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That's about what I thought too. Thanks for the input.
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Old 04-12-2018, 08:51 PM
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AlexPeterson AlexPeterson is offline
 
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Quote:
Originally Posted by blueflyer View Post
Does anyone know what material the Lycoming Cylinder studs made out of? Are they carbon steel?
All steel has carbon - I'm curious why you asked?
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Old 04-13-2018, 05:42 AM
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I am doing research into cylinder studs because I am having to replace a couple. In researching which studs are right for my engine, I began to wonder about what they were made of, and I didn't see that in any documentation I found.
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Old 04-13-2018, 05:50 AM
BillL BillL is offline
 
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If you really want to know you will have to burrow down in the certification documentation. It has everything there. I would be surprised if the spec is near a grade 5 though. just due to the required infinite fatigue life. Engine structural fasteners can evolve to be quite unique depending on failure history. Particularly, main, head, connecting rod etc.
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