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MST0118 MST0118 is offline
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Join Date: Oct 2011
Location: Lafayette, CA
Posts: 777
hollow stem valves v. Ti & SS

I’m wondering if anyone has tried hollow stem valves in their engine and if so how they’re holding up. Their weight is about 20% lighter than stainless steel but not as light as titanium which is probably 40% less than SS.

I think hollow stem are not recommended for turbo but may be an alternative to Ti valves for NA motors since they’re quite a bit cheaper. I’m curious for what type of engine is it recommended to use a hollow stem or Ti valve.

For instance, is recommended to use these valves with appropriate springs in an engine that regularly spins to 8000 or 9000 rpm? Are there benefits to engines that rev lower or is it a waste of money? Also, at what point or RPM level would hollow stem be inadequate when compared to Ti?
Old 09-01-2018, 02:18 PM
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