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 Experiences and tests with valve guides made of different materials

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3 participants
AuteurMessage
LeonardoMRF2




Nombre de messages : 33
Localisation : Brasil
Date d'inscription : 28/04/2019

Experiences and tests with valve guides made of different materials  Empty
MessageSujet: Experiences and tests with valve guides made of different materials    Experiences and tests with valve guides made of different materials  Icon_minitimeMer 9 Fév 2022 - 18:12

We have a large amount of materials available and each head project we have a more suitable material, I would like if possible the opinion and information of the experience with different materials.


I have tested these materials over the years:

nickel-aluminum bronze ,Aluminum bronze, Phosphor bronze or Beryllium copper (depending on engine)
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Dan42




Nombre de messages : 7718
Localisation : Margerie-Chantagret 42
Date d'inscription : 06/04/2014

Experiences and tests with valve guides made of different materials  Empty
MessageSujet: Re: Experiences and tests with valve guides made of different materials    Experiences and tests with valve guides made of different materials  Icon_minitimeJeu 10 Fév 2022 - 15:56

If you have tested somme material, please give us your opinion first.
Dan
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LeonardoMRF2




Nombre de messages : 33
Localisation : Brasil
Date d'inscription : 28/04/2019

Experiences and tests with valve guides made of different materials  Empty
MessageSujet: Re: Experiences and tests with valve guides made of different materials    Experiences and tests with valve guides made of different materials  Icon_minitimeJeu 10 Fév 2022 - 18:48

In admission we use nickel-aluminum bronze, aluminum bronze, phosphor bronze and beryllium copper.

in the exhaust, cast iron, phosphor bronze and beryllium copper

Beryllium Copper:
Beryllium copper that we used in an engine with titanium valves in the intake, in this engine the valve seats used the same beryllium copper material, tests with the other materials showed superior wear on the titanium valve compared to beryllium copper.

I don't have conclusive heat transfer efficiency tests for the materials listed, and therein lies my interest in information from practical experiences.
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tonor




Nombre de messages : 71
Localisation : Hiaute
Date d'inscription : 15/03/2017

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MessageSujet: Re: Experiences and tests with valve guides made of different materials    Experiences and tests with valve guides made of different materials  Icon_minitimeMar 1 Mar 2022 - 12:14

I know that Mike Pemberton uses Colsibro for valves guides.

Colsibro is a precipitation hardening copper nickel silicon that offers a remarkable blend of physical and mechanical attributes unrivalled by many other grades of copper alloy.

If you're looking for valves guides for a Gilera Saturno, I might have a pair.
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MessageSujet: Re: Experiences and tests with valve guides made of different materials    Experiences and tests with valve guides made of different materials  Icon_minitime

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