Stock titanium or aftermarket stainless steel valves?

[openwheeler37]

I'm looking into rebuilding the upper end of my spare motor and need to do valves. Do I go with the stock titanium or an aftermarket stainless steel valve. There is a good bit of difference in cost between the two. I can see pros and cons with both. Looking for your input.

Thanks.

[Daryl DeArman]

I'm looking into rebuilding the upper end of my spare motor and need to do valves. Do I go with the stock titanium or an aftermarket stainless steel valve. There is a good bit of difference in cost between the two. I can see pros and cons with both. Looking for your input.

Thanks.

Ti. Lighter and better fatigue resistance.

At the rpms these motors turn, the additional weight of the stainless valves may just be too hard on springs and seats. Ti is more expensive, the OEM likely would not have utilized it if they didn't feel it was warranted.

[JerryH]

why not use aftermarket titanium valves. they are available at about the same price as stock ones.....and are one piece instead of the two piece like the factory ones.

Ti. Lighter and better fatigue resistance.

At the rpms these motors turn, the additional weight of the stainless valves may just be too hard on springs and seats. Ti is more expensive, the OEM likely would not have utilized it if they didn't feel it was warranted.