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click for a larger version 6/19/2004
Another thing Dave turned me on to is the thermostat controlled oil cooler. My engine had a problem getting oil temperature up to where it should be. Jabiru reccommends 212 deg. for continuous operation and mine was usally about 160. Check out this link for more info on the unit I'm going to install.
7/11/2004
At last oil cooler is installed. The major obstacle was to find an oil filter which would fit on top of thicker thermostat plate and still clear the cooling fins on the engine. The field of available oil filters was limited by the 3/4" x 16 thread on the filter adapter. I've found several small filters in metric 20mm x 1.5 size. At last BAT Inc in Sarasota Florida (see the link above) had a filter which fits a Renault or Peugeot (thanks Scott Barland Jr. for the spelling) cars, not sold in US. Erick at BAT Inc was a great help.
I replaced original Jabiru oil cooler with a new one I bought from Pete. It has 1/2" NPT fittings ready for unions and whatever other connectors you need to finish the job. You can get all parts from Pete at Jabiru USA or from BAT. As you can see in the pictures all fits well. I'm also told that this oil filter has been tested using oil pump with 1" connections and it would allow enough flow to keep that system working.One thing still missing is a nut JB welded on the top of the filter to allow safety wire it to a cooling fin.
6/19/2004
My original installation of the Jabiru and the way I connected the throttle to the lever on the carburetor didn't provide enough throttle travel between idle and full power. I was going to redesign this time around. I was going to use a lever which just because the way was hinged would offer a lot more travel. I spoke with Andy Silvester of Suncoast Sport Planes in Florida - Jabiru dealer - and he said that Dave Jalanti (email davej_at_mhcable.com )came up with a set up that works and offers about 2.5 inch throttle travel. I contacted Dave and you can see the pictures of the outcome on the left. Dave did an excellent job fabricating the extension and he will make one for you as well.

Below are pictures sent to me by Dave showing all the parts of the throttle extension and a text file with the instructions.

Click here to view installation instructions.

05/09/2004 Those of us who have a Jabiru engine on their Avids know that the original air filter box doesn't fit our engines the way it should. On my original installation, I used it unmodified because to change the air filter I would have had to remove the engine, there was no way to access the airfilter with the engine on. Also Jabiru recommends providing smooth airflow to the carburetor which is hard to accomplish with hard bends required in a SCAT hose.
I looked at the local auto parts store for a filter small enough to fit between the firewall and the distributor but I was unable to find one. Web to the rescue K&N Filters had to have what I was looking for. Sure enough under their special application section they had what I was looking for R-1260 - 3.5 in. by 5 in. cone filter. The filter is small enough to fit and provides more than adequate air supply for 2200cc Jabiru engine. Also the flange inside diameter had to be just the right size to go over the hose connecting it to the carburetor.
First things first - I've used automotive engine formula to determine filter size.

For my engine A=20.74 sq.in. K&N filter I used is 3.5 in. at the base 2 in. at the top and 5 in. tall - that comes out to the A=43.175 sq.in. - plenty big enough to do the job.
The original Jabiru filter was about 40 sq.in.
I decided to use hot air butterfly which came with the original Jabiru airbox, and add fiter box onto it. I don't like fiberglass smell, dust, or mess it makes so I've built my box out of .020 aluminum. I added a removable lid which will allow me to inspect and replace the filter. Since I've never built anything out of sheet metal, I struggled but the end result is acceptable. I know that some of you more particular folks wouldn't be happy with it' but it will do for me.
Another part of the project was to improve airflow to the carburetor - SCAT hose is easy to use but introduces too much turbulance to the airflow. Bing carburetor is very sensitive to turbulent airflow in particular in the area of pressure ports. Automotive rubber hose - smooth on the inside - would be a good solution if I could find one to fit over the carburetor throat. Auto Zone's M-206 fit that bill perfectly.
As you can see in the attached pictures the whole thing fits - and I can replace the filter by removing the airbox lid. I guess that's an improvement over what I had.

05/19/2004 I've email Jabiru Mfg in Australia a question to verify that my filter has been sized properly here is the reply:
G’day Mark,
Your calculations for the filter size seem to be pretty well on the money. Originally we ran 2200’s with a smaller filter and never really had an issue with them. The larger airbox was mainly designed to improve access to the filter rather than feed the engine more air. One of the more powerful 2200’s here in bundy is actually running one of the old-style small filters, so I doubt you’ll have any trouble.
Regards,
Doug Smith
Engineer, Jabiru Aircraft.

There are some people who think that the sharp bend in the hose connecting to the carburetor will be a problem. My original setup had the same sharp turn but used SCAT hose and my engine did fine. Replacing SCAT hose with a smooth radiator hose I view as an improvement. Never the less I'll do some testing before maiden flight and report results here and to the Yahoo Group.

4/29/2004 Engine is back on - some one said that my cardboard firewall wouldn't do - so I guess I'll have to think of something else - maybe I can wrap it in a aluminum foil! - great idea.

 
Copyright ©2004 Mark Schindler