tmc_31

Hey guys,

Anybody know what material (alloy) the exhaust valves for the 5.9 engines are made from? Are they solid valves or sodium filled?

Thanks,

Tim

madhat

From an 04 manual:

"The valves are made of heat resistant steel and
have chrome plated stems to prevent scuffing. Each
valve is actuated by a roller rocker arm which pivots
on a stationary lash adjuster. All valves use three
bead lock keepers to retain the springs and promote
valve rotation."

tmc_31

Thanks madhat, have you ever cut one apart? Are they hard of soft? The reason I am asking is that a fellow on another forum is grinding these valves into boring bars for use on a lathe. I asked him what material they were made from and he didn't know. I couldn't find an answer easily on the internet so I thought I would ask here.

Tim

tantruck

Should work fine for turning and boring aluminum and soft steels.

Some reading here ---> http://www.underhoodservice.com/Arti...nd_alloys.aspx

tmc_31

Thanks tantruck, good reading. Lots of info on valve design. Thank you for the help. I think the guy on the other forum may be on to something. I am going to find an old valve and give it a try as a boring bar.

Tim