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Date:         Mon, 3 Mar 2003 15:16:08 -0800
Reply-To:     Tom Young <tomyoung1@ATTBI.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Tom Young <tomyoung1@ATTBI.COM>
Subject:      Re: [T2] A cc'ing the heads question-answered
Comments: To: John Rodgers <j_rodgers@charter.net>
Content-Type: text/plain; charset="iso-8859-1"

CC'ing the heads is the process you use to measure the volume of each combustion chamber in your heads, in cubic centimeters. Hence, "cc'ing" the heads. It's all part of the process of determining what the Combustion Ratio (CR) is of your particular engine.

Here's a good link

http://home.hiwaay.net/~langford/corvair/valvejob.html

that describes the process on a Corvair engine which is, of course, completely applicable to a VW engine or just about any other engine for that matter. The only thing here I take exception to is the procedure of drilling 2 holes in the Plexiglas plate you use in the head. Naturally, you need a hole in the plate to let your fluid in and air out, but in my opinion it's just a heck of a lot easier having only one hole, not two. --------------------------------------------------------------- Tom Young '81 Vanagon Lafayette, CA 94549 '82 Westfalia --------------------------------------------------------------- ----- Original Message ----- From: John Rodgers To: Tom Young Cc: vanagon@GERRY.VANAGON.COM Sent: Monday, March 03, 2003 2:52 PM Subject: Re: [T2] A cc'ing the heads question-answered

I sort of got lost on this thread about '"CC"ing the heads. Would you mind explaining what this "CC"ing thing is. What is it for. And is there any possibility that pictures and procedures and find their way to a website if not already done. If done, I'd like to know where.

Thanks a bunch.

John Rodgers 88 GL Driver

Tom Young wrote:

I ended up using rubbing alcohol colored with a few drops of food coloring. Cheap ($.79 for a big bottle), safe, and worked like a charm, completely eliminating my "sticky" bubbles problem.

I might mention that before cc'ing the heads I bought three carriage bolts, 7 inches long and 3/8th's inch in diameter, and six nuts. Using the 3 bolts and the outside rocker arm stud of the head that wasn't being measured as the 4 "legs" touching the top of my workbench the head was completely stable and could easily be manipulated (by screwing the bolts clockwise or counter-clockwise) to get the air bubble directed at exactly the right spot. This made for very repeatable measurements. --------------------------------------------------------------- Tom Young '81 Vanagon Lafayette, CA 94549 '82 Westfalia --------------------------------------------------------------- ----- Original Message ----- From: "Chris Mills" <scm9985@tntech.edu> To: "Tom Young" <tomyoung1@attbi.com>; <vanagon@GERRY.VANAGON.COM>; <type2@type2.com> Sent: Monday, March 03, 2003 12:27 PM Subject: Re: [T2] A cc'ing the heads question

I like using the colored water because it's safe and easy to dispose of, but I'm thinking perhaps I should use a solvent of some sort - kerosene, paint thinner, etc. - if it will help eliminate my bubble problem. Marvel Mystery oil (thinner fluid)?

Chris Mills in TN

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