So....since my last post I have added ramps in front of both cyl #1 & #2, added a "top ramp" to help direct the air DOWN from the top of my baffle plenum, this seems to have helped at cruise speed, 2400rpm and 85Kts TAS, I am seeing CHT's of 350, Oil of 180 and I can EVEN lean about 150º of EGT.... wow..... but..... at slow flight (below 40kts IAS she still ends up running over 400º CHT and creeping over 200J Oil.
here you can see the first "top ramp" and the ramp in front of cyl #1, both seemed to help so I went ahead and completed the "top ramps" and built another front ramp for cyl #2
here you can see my second "top ramp", after this I closed the gap with another "top ramp"
I have really tried to find a spot in the front of the cowl for the oil cooler but this BCSC cowl is SO tight up front and SO tight around the cylinder heads and intake manifold and exhaust branches that I came up with another idea that I would like to bounce off the forum members before trying out.....
WHAT ABOUT trying a NACA duct on the right hand side of the cowl, just below the cylinder heads out of the way of the intake and exhaust -> this NACA duct is then ducted to the 13 row oil cooler mounted on the firewall behind cyl #3 (more space this side) and the exit air is SCAT tubed down to a separate exit scoop on the lower right side of the cowl... see pic below for rough location
please try and ignore the strap, we were fitting the new lower scoop, which I will share if it makes a difference...
under the strap you can see the rough dimensions (cryptic... I know) for the NACA duct..... any opinions on whether it will work? think there will be enough air to draw in from the side of the cowl?
here you can see the first "top ramp" and the ramp in front of cyl #1, both seemed to help so I went ahead and completed the "top ramps" and built another front ramp for cyl #2
here you can see my second "top ramp", after this I closed the gap with another "top ramp"
I have really tried to find a spot in the front of the cowl for the oil cooler but this BCSC cowl is SO tight up front and SO tight around the cylinder heads and intake manifold and exhaust branches that I came up with another idea that I would like to bounce off the forum members before trying out.....
WHAT ABOUT trying a NACA duct on the right hand side of the cowl, just below the cylinder heads out of the way of the intake and exhaust -> this NACA duct is then ducted to the 13 row oil cooler mounted on the firewall behind cyl #3 (more space this side) and the exit air is SCAT tubed down to a separate exit scoop on the lower right side of the cowl... see pic below for rough location
please try and ignore the strap, we were fitting the new lower scoop, which I will share if it makes a difference...
under the strap you can see the rough dimensions (cryptic... I know) for the NACA duct..... any opinions on whether it will work? think there will be enough air to draw in from the side of the cowl?
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