Titanium valves? Pushrods?
Thread Starter
Melting Slicks
Joined: Mar 2003
Posts: 2,472
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From: Toronto ONTARIO
Titanium valves? Pushrods?
So whats the lowdown on Titanium thats available? Are they durable for a street motor? Do any of the big brands carry them (i know manley does ti valves) ? Im guessing theres a significant weight savings in pushrods too if they were titanium.
Race Director
Joined: Dec 2002
Posts: 13,345
Likes: 230
From: SCMR Rat Pack'r Charter Member..Great Bend KS
Ti pushrods make more sense than Ti valves, but even then, the benefit per $ is way down.
Ti exhaust valves have a half-life of about 30 minutes, and even the intakes have to be changed very frequently.
Titanium exhibits lots of "creep"....something that the SS and nickel alloys commonly used for valves don't.
If you need that last 100rpm, have a sponsor with deep pockets, and don't mind rebuilding the heads every 500 miles, Ti valves makes a great addition to your signature.
For the rest of us, they are pie in the sky.
Larry
code5coupe
Ti exhaust valves have a half-life of about 30 minutes, and even the intakes have to be changed very frequently.
Titanium exhibits lots of "creep"....something that the SS and nickel alloys commonly used for valves don't.
If you need that last 100rpm, have a sponsor with deep pockets, and don't mind rebuilding the heads every 500 miles, Ti valves makes a great addition to your signature.
For the rest of us, they are pie in the sky.
Larry
code5coupe
Le Mans Master
Joined: Jul 2000
Posts: 5,012
Likes: 5
From: OKC OK
I believe the LS7 has Ti intake valves, so they must be somewhat durable if done right. I'd think hollow stem intake and sodium filled exhaust would be good light enough. Ferrea makes/sells 'em.
Thread Starter
Melting Slicks
Joined: Mar 2003
Posts: 2,472
Likes: 0
From: Toronto ONTARIO
Was wondering because the ls7 does use them. also uses ti pushrods i think. I already have ti retainers and Ti locks so was wondering where i can lose some more weight in the valvetrain.
Large Impressive Member
Joined: Jul 2003
Posts: 65,811
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From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Originally Posted by vader86
Titanium would be good for retainers
You really can't beat beehives if you don't need double (or more) springs.
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,008
From: Texas
Originally Posted by DieL
Was wondering because the ls7 does use them. also uses ti pushrods i think. I already have ti retainers and Ti locks so was wondering where i can lose some more weight in the valvetrain.
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