Still working on the cooler installation. The right flange has to be modified so that the gap with the engine mount is at least 1/2". The picture shows the alterations I made.



Then I have to drill the two rear baffles for the magnetos cooling blast tubes. The black tube will be attached a bit later.



Then I have to drill the forward raight ramp for the alternator cooling tubing. I have ordered a 1" aluminium flange to install the tubing and have a nicer finish.



And last hole to be drilled, in the forward left ramp. As I will have dual mufflers, I have to ventilate both mufflers so that's where the left muffler will get the air from. (The right muffler gets it from the right rear baffle, installed yesterday).

next is to install the oil cooler on the rear left baffle. These as the parts to assemble : the baffle, a doubler and a bracket.



And this is the result after some cutting, filing, deburring and dimpling. The bracket is not visible being on the other side of the baffle.
I also installed the ignition wire grommet.



The cooler will be bolted with very long bolts so spacer have to be fabricated tobe inserted between the cooler's flanges. I cut the spacer a bit shorter than the dimension given in the plans. This will allow some washers to be put between the spacer and the flange and spread the load.



Then I prime the contact surfaces and begin riveting all the parts. I had some problems with a few rivets so this task took a bit longer than expected.



This is the air pick-up for the cabin heat on the aft right baffle (there will be a second pick-up on the left forward baffle I think).

Before doing the final cut (or almost), the side baffles have to be cut down around the inlets. But first, the inlet ramps are clecoed to the upper cowl to get the correct shape. The ramps will be epoxied to the cowl later.



Here the baffles after the cut on both sides of the inlet. After a few installtions and removings of the cowl and baffles, I did the final cut and deburred all the parts.

Still working on the baffle cuts. The idea is to install the upper cowl and be sure that there is a 3/8 to 1/2" gap between the baffles and the cowl. As everything is hiddent once the cowl is closed, the following trick is used : first put some paper clips on the top of the baffles, then install the upper cowl and then measure te gap from the top of the clip.
As I'm cutting a few 1/16" each time, I needed a few iterations. I still have to make some adjustements.

I spent a good part of the afternoon, sanding, priming and riveting the forward and side baffles.
Some rivets where interesting to set, and I used a few pop rivets in places I feared I would damage the parts.
The picture shows the two finished parts.



With the parts bolted to the engine, came the time to cut of the height to be able to close the upper cowl.
The picture shows there will be quite a lot of material to cut off.
I progressed very slowly and still a couple 1/8" to cut off beafore tackling the final cut. This will be done next time.