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Mike Mans · 02-08-2019, 11:54 AM

Well for some quick comparison, Stainless is about 30% stronger than Titanium - and we run our Ti valves in modified about 250 runs at least. I wouldn't have a problem running a stainless hollow stem 300+ runs if you've got a stable valvetrain that doesn't kill springs and make it impossible to get the keepers out of the retainers when you pull it apart.

A Manley and Ferrera hollow-stem valve has around .080"+ wall thickness, so you've got plenty of meat in there. They aren't making anything on the edge from what I've seen.

Mike

02-08-2019, 11:54 AM	#6
Mike Mans Member Join Date: Jan 2006 Posts: 177 Likes: 21 Liked 297 Times in 48 Posts	Re: Hollow Stem Valves Well for some quick comparison, Stainless is about 30% stronger than Titanium - and we run our Ti valves in modified about 250 runs at least. I wouldn't have a problem running a stainless hollow stem 300+ runs if you've got a stable valvetrain that doesn't kill springs and make it impossible to get the keepers out of the retainers when you pull it apart. A Manley and Ferrera hollow-stem valve has around .080"+ wall thickness, so you've got plenty of meat in there. They aren't making anything on the edge from what I've seen. Mike