---------------------------------------------------------- JabiruEngine-List Digest Archive --- Total Messages Posted Thu 07/23/09: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:07 AM - cooling (BobbyPaulk@COMCAST.NET) 2. 02:41 PM - Re: cooling (jim) ________________________________ Message 1 _____________________________________ Time: 06:07:34 AM PST US From: BobbyPaulk@COMCAST.NET Subject: JabiruEngine-List: cooling All, i have the 3300 in a 601 XL. it has the original low Ram Air Ducts with the plug wires going thru the duct at the plugs. i have glassed in the dams between the plugs and can move the temps around but can not get all of them in a safe operating range. on the left side i got #2 down to 270 degrees but #4 went up to 340 plus. i put a longer dam at #4 and it came down to 285 BUT #6 went to 353 even at low power settings. i have installed the dams - ground off an 1/8" at a time - removed them and put them back at different angles. nothing i do seems to work. i can't help but think there is not enough air in the shallow duct to cool all three cylinders on one side. the right side 3 cylinders seem to be O.K. has anyone had this problem and have you solved it ?? i know the prop is coming up on the left side and down on the right side so it changes the angle of entering air, but how do i get them all cool. thanks for any help. i have 85 hrs on it and still fighting CHT's DO NOT ARCHIVE Bobby N131BP ________________________________ Message 2 _____________________________________ Time: 02:41:15 PM PST US Subject: Re: JabiruEngine-List: cooling From: jim Hi Bobby If you can please give a call, I have some questions about your installation so I can direct in the right direction on reducing your CHT=B9s. Jim McCormick Jabiru Pacific LLC 255 W Fallbrook Suite 202B Fresno, Ca 93711 P 559.431.1701 F 559.233.3676 www.jabirupacific.com On 7/23/09 5:59 AM, "BobbyPaulk@COMCAST.NET" wrote : > All, > i have the 3300 in a 601 XL. it has the original low Ram Air Ducts with t he > plug wires going thru the duct at the plugs. i have glassed in the dams > between the plugs and can move the temps around but can not get all of th em in > a safe operating range. on the left side i got #2 down to 270 degrees bu t #4 > went up to 340 plus. i put a longer dam at #4 and it came down to 285 BUT #6 > went to 353 even at low power settings. i have installed the dams - groun d off > an 1/8" at a time - removed them and put them back at different angles. > nothing i do seems to work. i can't help but think there is not enough ai r in > the shallow duct to cool all three cylinders on one side. the right side 3 > cylinders seem to be O.K. > > has anyone had this problem and have you solved it ?? i know the prop is > coming up on the left side and down on the right side so it changes the a ngle > of entering air, but how do i get them all cool. > > thanks for any help. > i have 85 hrs on it and still fighting CHT's > > DO NOT ARCHIVE > > Bobby > N131BP > > > > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message jabiruengine-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/JabiruEngine-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/jabiruengine-list Browse Digests http://www.matronics.com/digest/jabiruengine-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.