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any metallurgists here :)



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I knew weight was the reason, I just wasn't sure on the expansion thing. I wouldn't put it past auto makers to make a lighter, more efficient engine that wore out a lot quicker due to expansion and contraction, hence the question.
Dan
 L F <rocco16v@netzero.net> wrote:Aluminum does have a coefficient of expansion greater than the ferrous alloys and cast iron.  That characteristic is accounted for when they design for aluminum. Aluminum blocks are becoming more popular for one reason; weight.(And vehicle weight is the major player in the quest for greater mileage) Larrysandiego16v----- Original Message ----- From: Dan Smith To: Allyn ; Ryan Schuermann ; scirocco-l@scirocco.org Sent: Sunday, February 23, 2003 1:43 PMSubject: Re: any metallurgists here :)

Speaking of engine metal, why are most engines aluminum now? Doesn't aluminum expand and contract a lot under heat/cold? Wouldn't that really stress out parts and stuff? 
Dan 
 Allyn <amalventano@sc.rr.com> wrote: if it wasnt an alloy, our bottom ends would all be piles of orange dust by
now.
Al

----- Original Message -----
From: "Ryan Schuermann" 
To: 
Sent: Sunday, February 23, 2003 4:21 PM
Subject: any metallurgists here :)


> ok our beloved vw bottom end is... cast iron? Does anyone know
> if it's pure iron or an alloy of some type?
>
> Ryan
>
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<P>I knew weight was the reason, I just wasn't sure on the expansion thing. I wouldn't put it past auto makers to make a lighter, more efficient engine that wore out a lot quicker due to expansion and contraction, hence the question.
<P>Dan
<P>&nbsp;<B><I>L F &lt;rocco16v@netzero.net&gt;</I></B> wrote:
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<DIV><FONT face=Arial size=2>Aluminum does have a coefficient of expansion greater than the ferrous alloys and cast iron.&nbsp; That characteristic is accounted for when they design for aluminum. Aluminum blocks are becoming more popular for one reason; weight.</FONT></DIV>
<DIV><FONT face=Arial size=2>(And vehicle weight is&nbsp;the major player in the quest for greater mileage)</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>Larry</FONT></DIV>
<DIV><FONT face=Arial size=2>sandiego16v</FONT></DIV>
<BLOCKQUOTE style="BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A href="mailto:sad_rocc@yahoo.com"; title=sad_rocc@yahoo.com>Dan Smith</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A href="mailto:amalventano@sc.rr.com"; title=amalventano@sc.rr.com>Allyn</A> ; <A href="mailto:big_hot_tamale@yahoo.com"; title=big_hot_tamale@yahoo.com>Ryan Schuermann</A> ; <A href="mailto:scirocco-l@scirocco.org"; title=scirocco-l@scirocco.org>scirocco-l@scirocco.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, February 23, 2003 1:43 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: any metallurgists here :)</DIV>
<DIV><BR></DIV>
<P>Speaking of engine metal, why are most engines aluminum now? Doesn't aluminum expand and contract a lot under heat/cold? Wouldn't that really stress out parts and stuff? 
<P>Dan 
<P>&nbsp;<B><I>Allyn &lt;<A href="mailto:amalventano@sc.rr.com";>amalventano@sc.rr.com</A>&gt;</I></B> wrote: 
<BLOCKQUOTE style="BORDER-LEFT: #1010ff 2px solid; MARGIN-LEFT: 5px; PADDING-LEFT: 5px">if it wasnt an alloy, our bottom ends would all be piles of orange dust by<BR>now.<BR>Al<BR><BR>----- Original Message -----<BR>From: "Ryan Schuermann" <BIG_HOT_TAMALE@YAHOO.COM><BR>To: <SCIROCCO-L@SCIROCCO.ORG><BR>Sent: Sunday, February 23, 2003 4:21 PM<BR>Subject: any metallurgists here :)<BR><BR><BR>&gt; ok our beloved vw bottom end is... cast iron? Does anyone know<BR>&gt; if it's pure iron or an alloy of some type?<BR>&gt;<BR>&gt; Ryan<BR>&gt;<BR>&gt; __________________________________________________<BR>&gt; Do you Yahoo!?<BR>&gt; Yahoo! Tax Center - forms, calculators, tips, more<BR>&gt; http://taxes.yahoo.com/<BR>&gt;<BR>&gt; _______________________________________________<BR>&gt; Scirocco-l mailing list<BR>&gt; Scirocco-l@scirocco.org<BR>&gt; http://neubayern.net/mailman/listinfo/scirocco-l<BR>&gt;<BR><BR><BR>_______________________________________________<BR>Scirocco-l mailing list<BR>Scirocco-l@scirocco.org<BR>http://neubayern.net/mailman/listinfo/scirocco-l</BLOCKQUOTE>
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