Putting price aside, does anyone have any experience using titanium lug nuts on the track? I'm curious if they will loosen up or otherwise perform negatively at the track through heat cycles and such. Also would you expect them to damage wheels and/or studs due to differences in hardness?

 

Not sure on loosening. Best thing to do IMO would be having them coated to protect against galling.

 

i thought that galling only occurs when two metals are the same or close to the same hardness.

I don't see a problem running them

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Wikipedia &raquo;</TD></TR><TR><TD CLASS="quote">Galling is a cold welding phenomenon which can occur when uncoated stainless steel or aluminium alloy parts, such as the threads of nuts and bolts, are forced together. </TD></TR></TABLE>

http://en.wikipedia.org/wiki/Galling

 

Wiki is not complete.
Titanium is unique, that it has tendency to gall on to other metals.

I don't know enough about metallurgy to know if it is a good idea to have Titanium lug nuts. I would proceed with cautions.

 

Would you guys run aluminum lugnuts?

 

Just checked with a friend of mine. He said Titanium lugs on steel studs would be fine. Use anti seize and you are good to go

 

Cool, Thanks for the input guys. If anyone else has info please don't hesitate to share.

 

Not car related but I used aluminum and titanium screws and bolts on my previous mountain bike. Nothing but problems when trying to undo these fasteners. For my current mountain bike nothing but steel fasteners.

Google search revealed:
Anti-galling Treatments. The tendency for titanium to gall when in sliding contact with itself or with other materials can be reduced by some form of surface treatment. This is particularly desirable for bearing surfaces and for threads of bolts. Both anodizing and `Sulfinuz` treatments reduce the galling tendency, while adherent nickel and chromium deposits provide good wear resistant surfaces. Cadmium plating or the use of anti-galling paints are effective in preventing seizure of bolt threads. Details of electro deposition and anodizing procedures are given in the following paragraphs.

source: http://www.key-to-metals.com/Article42.htm

 

doesnt galling take a moderate amount of time too? with a race car i would think wheels wont be on the car long enough for that to be an issue.

 

So where are you getting extended Titanium Lugs?

HEY!!!! group buy

Nitride ftw

 

never use never sieze on lug nuts.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 03MSP &raquo;</TD></TR><TR><TD CLASS="quote">never use never sieze on lug nuts.</TD></TR></TABLE>
you mean anti seize? you always use anti seize.

 

LOL... that was funny

 

titanium lug nuts are fine if you use the proper anti-seize. You can use loctite copper hi-temp anti-seize or get a small tube of proper titanium anti-galling paste from some larger bicycle shop.

 

I believe Porsche OE lug nuts are titanium

 

Porsche does indeed use Ti. We have some at work, its crazy holding them in your hands. Doesn't compute in your mind.

 

Does Porsche specify the use of anti-seize/galling sauce?
Would you use the same torque specs?

Great info guys!

 

Which Porsche comes with Ti lug nuts?

All the race cars and Porsched I used to work on comes with hardened aluminum alloy lug nuts.

PCA and other Porsche club recommends changing them to steel lug nuts for track use.

There were some ads on Porsche magazine, Excellence, on Ti lug nuts but wasn't catching up with the Porsche crowd.

 

I am curious as to why it is even worth it if there is any risk? The weight savings is next to nothing.