hi stan best to realy clarify position of egt for accuracy ,i take it you tried to enrichen mixture and nothing occured ,which needs checking to see if it realy is enricening another simple thoiught not accurate test is to have a look at plug colors and take off exhaust and have a peak in exhaust port to see the color , though i thuink with some fuels this can be misleading a simple c.o. meter shoved up exhaust pipe will tell you lots i wonder also if you have done any of the h .v.x. mods which realy emphasise cooling the valves /using new oil gallerys and extra pressure see these picks http://users.lmi.net/~ryoung/Sonerai/HVX_Mods.html
phil ----- Original Message ----- From: "Stanley Mello" <myplanewo...@hotmail.com> To: <kr...@mylist.net> Sent: Monday, January 02, 2006 8:44 PM Subject: KR> High EGTs > Hey Guys, Need some ideas on how to fix a problem. I am flying a VW 2180 > with an 1821 carb and a KR intake sytem from Great Plains Aircraft. My > compression ratio is 6.9 to 1 with standard cylinder heads. My problem is > that at cruise my EGTs run 1500 to 1800 degrees on all cylinders while the > CHTs are normal at 350 to 375 degrees. My EGT Gauge is a WESTACH with the > probe sensors installed 6 inches from the exhaust port on the heads. I can > enrichen the fuel mixture until the engine starts to missfire and then lean > just a little and the EGTs still run up there in the 1500 to 1800 degree > range. I finaly burned an exhaust valve. My CHT gauge is also a WESTACH > system. I seem to remember someone else had a similiar problem a while > back. > Also has anyone used an intake system other than the Standard KR intake used > by most builders? It seems to me that there is to much tubing in the > multiple pipe system of the KR type intake for low RPMs used in aircraft > causing the fuel to condense and create poor automization or vaporization > all the way to the combustion chamber. Would not a single pipe have more > velocity at the low RPMs. A beach buggy turning 5 to 8 thousand benifits > from multiple intake pipes but I am not so sure about the 3 to 35 hundred > range. I would like to hear everyones thoughts. > > THANKS, STAN KR2-M > > _________________________________________________________________ > Don't just search. Find. Check out the new MSN Search! > http://search.msn.click-url.com/go/onm00200636ave/direct/01/ > > > ---------------------------------------------------------------------------- ---- > _______________________________________ > 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 ---------------------------------------------------------------------------- ---- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.371 / Virus Database: 267.14.9/217 - Release Date: 30/12/2005 ---------------------------------------- I am using the free version of SPAMfighter for private users. It has removed 24666 spam emails to date. Paying users do not have this message in their emails. Try www.SPAMfighter.com for free now! -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.371 / Virus Database: 267.14.9/217 - Release Date: 30/12/2005
