Re: VW & Audi cylinder head port info needed...

[JShadzi@aol.com]

In a message dated 7/14/99 3:49:00 PM Eastern Daylight Time, OorQue@aol.com 
writes:

<< e airflow restrictions are located.  However, since I've only got one 
 5-cylinder head and have already spent some money having it jet-cleaned and 
 pressure-tested, I'd prefer to experiment on the junk 4-cylinder VW heads 
 I've got lying around instead.  The ports certainly appear to be *very* 
 similar to each other but looks can be deceiving and since I'm not trying to 
 squeeze every last CFM possible out of it but merely clean up the major 
 restrictions, I don't want to go to the trouble of casting port molds if I 
 can avoid it.  Any BTDTs will be greatly appreciated.   
  >>

	I have a small write up of porting my head on my web page-
	
	web.csuchico.edu/~javad

	i agree with an earlier post that you should not do too much 
enlarging, only smoothing and attention to the short side radius.  Also, the 
valve seat can be opened up 1.5mm around the inside of the valve.  I also 
paid a lot of attention to the valve guide, especially on the sides of the 
bowl.  The exhaust side is really bad, it almost touches the side of the 
bowl.  Taper the sides of these.  Just my BTDT.  It is good that you have a 
flow bench, so you are not shooting in the dark.  This is also a very good 
area where a cam can increase flow.  Check out www.autoteck.com for a good 
selection of SS valves.
HTH,
Javad Shadzi
88 80Q