Last year, I brought an IR temp sensor to the gathering for anyone who wished to test their head temps. Jim Faughn was the only one interested in doing it. I still have the tester and have found it very useful when test running my engine to locate the hot areas in the cylinder heads.
Mark Jones (N886MJ) Wales, WI USA E-mail me at flyk...@wi.rr.com Visit my KR-2S CorvAIRCRAFT web site at http://mywebpage.netscape.com/n886mj ----- Original Message ----- From: "Ron Eason" <r...@jrl-engineering.com> To: "KRnet" <kr...@mylist.net> Sent: Tuesday, August 23, 2005 4:51 PM Subject: Re: KR> engine CHT temps > If anyone out there has access to a IR Scope it could be used to find the > temperature quadrants on the heads of engines types[ VW Corv. Cont. and > etc.]. The info would indicate where to place sensors. > I have worked with these scopes at GM, but the scope is GM's not mine. > > KRRon > > ----- Original Message ----- > From: "Oscar Zuniga" <taildr...@hotmail.com> > To: <kr...@mylist.net> > Sent: Tuesday, August 23, 2005 4:40 PM > Subject: KR> engine CHT temps > > > > In response to the exchange on location of the temp probe for CHT, I'll > > repost this from Dec. of 2003 for your consideration: > > ================== > > Howdy, Netters- > > > > I got my "Beetle Flyer" (from Great Plains Aircraft Supply) over the > > weekend > > and took notice of a tech tip on locating your CHT sensor on the VW engine > > ( down the page, at http://www.greatplainsas.com/bf20032.html ). Standard > > practice is to install it under a spark plug, but Steve Bennett points out > > that your CHT temps will read high if you do this... by as much as 150F. > > He > > recommends installing it under a head stud (location is given in the text > > in > > the Flyer, but not as clear as it could be). Long and short of it is that > > if you're running a VW and have your CHT sensor under a spark plug, you > > may > > not be getting readings that reflect what you're really interested in. > > > > If Bob Hoover is still monitoring this list, maybe he would care to chime > > in? If Steve is monitoring this list, maybe he would care to elaborate > > more > > clearly on the preferred location? The picture in the Flyer identifies a > > boss that is used for fuel injection temp. probe, but doesn't say this is > > the recommended spot (and doesn't seem to be a good spot anyway). The > > idea > > is to respect the metallurgy of the head castings by not allowing the CHT > > to > > exceed recommended temperature... bad and irreversible damage can result > > if > > the metal gets too hot. > > > > Oh, and somewhat timely and related to Mark Jones and Mark Langford's two > > different approaches to cooling plenum on the Corvair, the Beetle Flyer > > also > > addresses cooling plenum design for the VW on the above-referenced > > webpage. > > > > Oscar Zuniga > > San Antonio, TX > > mailto: taildr...@hotmail.com > > website at http://www.flysquirrel.net > > > > > > > > _______________________________________ > > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > > please see other KRnet info at http://www.krnet.org/info.html > > > > > > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
