Valve guide life with .700+ lift cams?
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Valve guide life with .700+ lift cams?
For street/ strip use how many miles do you see before guides need replacing? This would be on a typical high quality aluminum performance head.
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Re: Valve guide life with .700+ lift cams?
Depends on guide material quality
Amount of stem run out
Guide finish honed or reamed and amount of clearance started with
And how well the geometry was set up to start with will determine how long they last.
But in a perfect world where attention to every detail is paid if the engine lasted I would say about 30K miles
Amount of stem run out
Guide finish honed or reamed and amount of clearance started with
And how well the geometry was set up to start with will determine how long they last.
But in a perfect world where attention to every detail is paid if the engine lasted I would say about 30K miles
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Re: Valve guide life with .700+ lift cams?
Just in general if the valves you use do not have good hard chromed stems and the motor is ring wise letting excess oil being burned then you will experience pretty fast Exh valve guide ware.
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