S5 Short Nose Smooth Cowl Oil Cooler Install Help

[Tjhj]

Hello,

I have an early S5, 1400 with the smooth cowl some pictures attached.

I have been getting away with a small rotax oil cooler mounted directly under the engine (you can see the oil lines hanging, I cant find a picture with it on), but not up against any inlet. It worked fair, but I upgraded to the 105 BB kit, and now I have high oil temps. (In a surprise to no one).

Where have others mounted the oil cooler in this circumstance, or any suggestions or advice on the best way to do this? Behind the middle lower inlet is very tight to the oil pump and not that much surface area, maybe 20 sq in.

It was suggested a 13 row would be ideal, so I was looking at the Setrab 6 Series ProLine Engine Oil Cooler, 13 Row with M22 Ports, but this doesnt really fit anywhere very well. Is this the one others are using with 100hp+ rotaxes?

Thanks for your help and time.
IMG_4825.jpgIMG_4820.jpgIMG_5887.jpg

[desertdave]

Here is my oil cooler on my smooth cowl Series 6.
IMG_3704.jpg

[Jcard]

Replaced the radiator and oil cooler on the smooth cowl 5 with a 7 radiator and 13 row setrab oil cooler.
Little naca duct.
30 degree drop in both water and oil temps.

[Tjhj]

Awesome suggestions and thank you.

Jcard, Did you keep the existing s5 ducting/mounts or is that all s7 mounts for the radiator and then ditch the original s5 mounts/baffles?

Thanks!

[Jcard]

Reused and modified the 5 mounts.