Randy Snarr wrote:
>
> I am looking for someone that is running the 0320 on the 235 airframe using
> the original cowl that is not having head cooling trouble (if there are any)
> I would be interested to hear what was done to accomplish that.

My 235/320 runs head temps from 325 to 375.  I'm using Lancair 320 baffle kit,
standard 235 air inlets with 6" ramps in the upper cowl to smooth the flow.  I
did use care to seal the baffles as completely as possible.
Air outlet is the nose strut slot and the gap around the exhaust pipes.

Oil temps are in the range of 185, actually I would like about 200-210.
I increased the size of the NACA duct for oil cooler air, and think I overdid
it.  In winter I fly with the air duct about 2/3 blocked.  Oil cooler outlet
vents into the firewall space and exits along with the engine cooling air.
>
> Also, I am in the process of modifying my exhaust system to better fit under
> the cowl.
> I recently spoke with another flyer that experienced a broken weld on their
> exhaust due to tension from the exhaust to airframe connection near the end
> of the pipe.

I think its best if you don't have any connection from the exhaust pipes to
the airframe or engine mount.  I made a couple of brackets from the back of
the engine to support the exhaust pipes in the back.  
I did have trouble with breaking of the hose clamps which attach
these brackets to the pipes, but that was fixed by building little "ramps" to
prevent the hose clamp from bending sharply at the bracket.  You can see the
hose clamps in one of the pictures on my web pages.  I also have the two
pipes clamped together in the back.


Bob Belshe
N19BJ  240hrs on IO-320
 http://home.attbi.com/~rbelshe/