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Date:         Thu, 13 Sep 2007 11:40:29 -0700
Reply-To:     "Mike \"Rocket J Squirrel\" Elliott" <camping.elliott@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         "Mike \"Rocket J Squirrel\" Elliott" <camping.elliott@GMAIL.COM>
Subject:      Re: How do you check compression?
Comments: To: rubatoguy@COMCAST.NET
In-Reply-To:  <091320071821.29301.46E97FC60007B2BA000072752200763704979A09019B0E0D9A9D@comcast.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

That's what I got.

--

Mike "Rocket J Squirrel" Elliott 71 Type 2: the Wonderbus 84 Westfalia: Mellow Yellow ("The Electrical Banana") 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano KG6RCR

On 9/13/2007 11:21 AM Todd Last wrote:

> Or you could use a compression gauge with a hold feature that automagically will keep the needle at the highest reading until released. (with a button on the side of the gauge.) > > For us lazy, presbiopics. > > Todd > '88 Westy > > > > -------------- Original message ---------------------- > From: David Kao <dtkao0205@YAHOO.COM> >> It sounds like chuck, chuck, chuck. The needle of the gauge >> will jump (upward) upon each chuck (stroke). The question >> is should it be measured until the needle stops moving higher >> or should the reading be taken at the 4th stroke. >> >> Dennis suggested to take the reading at the 4th or 5th. But he also >> said to read it until it reaches the highest reading. >> >> I believe a cylinder with excellent compression will give you highest >> reading on the 4th stroke. A cylinder not in optimal compression >> will require 6 - 8 strokes to reach max. reading. So the reading as >> well as number of stroke should both be considered for judging the >> compression of a cylinder. >> >> Vanagon engine seems need more than 4-5 strokes to reach max compression >> reading. Correct me if I am wrong about this. >> >> David >> >> >> >> >> --- Michael Elliott <camping.elliott@GMAIL.COM> wrote: >> >>> Engine warmed-up, cold, doesn't matter? >>> >>> Counting number of strokes -- is that the number of wuh-wuh-wuh sounds the >>> starter makes? >>> >>> -- >>> Mike "Rocket J Squirrel" Elliott >>> 71 Type 2: the Wonderbus >>> 84 Westfalia: Mellow Yellow ("The Electrical Banana") >>> 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano >>> KG6RCR >>> >>> >>> >>> On 9/12/2007 8:29 PM Dennis Haynes wrote: >>> >>>> Some more variables. Crank until gauge stops rising. You can hear the >>>> change. Count the number of strokes. Should be 4-5. The design of the >>>> gauge can affect this. The hose length and placement of the valve will >>>> make a difference. Of course you will also want to do a leak down test. On >>>> older engines it is common for the front two cylinders (1-3), to show >>>> lower compression then the rear and still check good with the leak down. >>>> This can indicate worn cam lobes. >>>> >>>> Dennis >>>> >>>> -----Original Message----- >>>> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of >>>> David Kao >>>> Sent: Wednesday, September 12, 2007 10:31 PM >>>> To: vanagon@GERRY.VANAGON.COM >>>> Subject: How do you check compression? >>>> >>>> I was told by a mechanic that when checking compression for a 4 cylinder >>>> engine I should get 4 strokes, no more than that, and get the reading. >>>> But Bentley Manual says to continue to crank until getting the highest >>>> reading. So how do you folks do it? How many strokes on the average do >>>> you crank to get the highest reading? >>>> >>>> David >>>> >>>> >>>> >>>> >>>> >>>> __________________________________________________________________________ >>>> __________ >>>> Luggage? GPS? Comic books? >>>> Check out fitting gifts for grads at Yahoo! Search >>>> http://search.yahoo.com/search?fr=oni_on_mail&p=graduation+gifts&cs=bz >>>> >> >> >> >> ________________________________________________________________________________ >> ____ >> Building a website is a piece of cake. Yahoo! Small Business gives you all the >> tools to get online. >> http://smallbusiness.yahoo.com/webhosting >


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