Re: Bypass hose restrictor

[Charles Slayman <Charles.Slayman@domain.elided>]

Jay,
	The question of function of the bypass restrictor comes up periodically 
on the digest, so I'll broadcast the message to our new members also. Rich Hirsh 
has an excellent article (based largely on work by Fred Di Matteo, Charlie 
Thieriot, and Carter Hendricks).  I consider it manditory reading for late model 
Spider owners.  Kinda like what Fred says about getting the Spica Tune Up 
Booklet from AROC!
	 
	  http://www.geocities.com/motorcity/downs/3837/bypassco.html
	  
	 I suppose you could make your own, but I suspect at least one if not 
most of our Digest Sponsors (IAP, Bruce's Parts Bin, Krause & England etc) carry 
these at a reasonable and fair price.  APE probably has half the worlds supply 
if they haven't thrown them out for scrap metal!  Making one would be tricky  
(but probably not worth the trouble) because it is a spring and orifice affair.
	 
Cheers,
Charlie S
'89 Spider (and yes, I made sure I kept my valve when I replaced my hoses ;->	   
	 
	    
>From: "Jay Mackro" <jmackro@domain.elided>
>To: <alfa-digest@domain.elided>
>Subject: Re: Bypass hose restrictor
>Date: Thu, 20 Sep 2001 18:14:13 -0500
>MIME-Version: 1.0
>Content-Transfer-Encoding: 7bit
>
>In the last couple of days, someone made a reference
>to the little thingys that were stuffed in the bypass
>hose of the later 4 cylinder Alfas.  You know, that
>approx. 1" dia. flexible hose that runs between the
>water pump and the thermostat housing.
>
>I got to thinking about that - I have never even SEEN
>one of those, although I have owned a number of 115
>series Alfas.  The hose restrictors tend to get thrown
>out when the hoses are replaced, as they are fairly 
>invisible once installed.
>
>So, my point is: Are these still available?  If not, could
>they be reproduced?  Like, would wedging a 7/8" OD
>brass flatwasher with a 7/16" id hole approximate what
>Alfa installed from the factory?  And, how important
>is it to have one of these?  My Alfas run pretty cool,
>but maybe with a bypass hose restrictor they'd be even
>cooler.  Bonus question: Why didn't Alfa - in its infinite 
>wisdom - just design the system with a smaller diameter 
>hose?
>
>Regards
>
>Jay Mackro
>San Juan Capistrano, California

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