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Re: Front strut parts Q.



from http://en.wikipedia.org/wiki/Nitrogen
"Nitrogen is also used in filling automotive tires due to its relatively flat line of thermal expansion."

also, check out http://forums.scotsnewsletter.com/lofiversion/index.php/t9369.html

and http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/thexp2.html#c3

hth
Al

----- Original Message ----- From: "John S. Lagnese" <jlagnese@massed.net> To: "'Larry Fry'" <rocco16@sbcglobal.net>; "'David Utley'" <fahrvegnugen@cox.net>; "'Camron D. Crouse'" <camron@worldaccessnet.com>; "'Scirocco List'" <scirocco-l@scirocco.org>
Sent: Sunday, March 06, 2005 3:24 PM
Subject: RE: Front strut parts Q.


I'll preface this by saying I don't know exactly nitrogen is used. The
atmosphere is 78% nitrogen. It is more probable that nitrogen is more
stable, less reactive that air with oxygen. Nitrogen isn't inflammable,
meaning it doesn't support burning. The density is .001251 g/cc.
Oxygen's density is .001429 g/cc. Air itself is .0012929 g/cc. This
isn't really a significant difference.
John

-----Original Message-----
From: scirocco-l-bounces@scirocco.org
[mailto:scirocco-l-bounces@scirocco.org] On Behalf Of Larry Fry
Sent: Sunday, March 06, 2005 8:46 AM
To: David Utley; Camron D. Crouse; Scirocco List
Subject: Re: Front strut parts Q.


New Tires Installed  yesterday  (Bridgestone Potenza  RE750 205 45
ZR16's Costco Nitrogen Filled  US$128 ea. )


What does filling the tires with Nitrogen do?  I am at a loss...  :(

Nitrogen does not expand as much as air as it warms up, so your tire
pressure stays more uniform as you drive.
This is not an issue with street cars for several reasons; the main one

being that air is primaritly nitrogen anyway, so the benefit is slight.
The main reason I see for using nitrogen is that bottled gas...nitrogen,
in
this case...is much drier than compressed shop air (even if the
compressor
has
a water trap) and wheel corrosion will be kept to a minimum.

According to ETKA,  (illus. 102-00) there are two rubber rings (171
411
139 and 171 411 140) that sit between the springs and perches on the
front struts.  I was unable to find these items new, and was wondering
the necessity of them.  I'd rather not skip them, but was hoping to
get
my struts assembled before tearing into the old suspension.  Truly
needed? Any suitable substitutions?

There were no spacers on my struts when I modified them.  Haven't seen
any
dire need, either.

Larry
sandiego16v


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