Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

cooling system help for auto engine conversion

cooling system help for auto engine conversion

cooling system help for auto engine conversion

I am installing a Mazda 13B in a homebuilt airplane and I am having trouble deciding how to best assemble the components. The real problem is what order to plumb in the Setrab LOC (oil-to-water) cooler in relation to the radiator. Should it be before the radiator or after? If it is before the delta of the water will be lower and thus the oil temp higher. If after, the water delta will be higher and thus the oil temp lower, but the heat will be routed back through the engine. The Mazda cools the rotors with oil, so about 1/3 of the cooling system is handled by the oil. The engine will be approximately 190hp.

RE: cooling system help for auto engine conversion

there are a couple of user groups that talk about these problems - search under 'Soob' or Subaru (popular auto A/C engine) and the magazine Contact! Lots of 'been there, done that' testimonials. Aviod the 'I heard that the way to do that is...' statements; nothing is better than actually trying the hardware in flight, and one test IS worth a hundred expert opinions. There are even facts about whether an oil/water cooler is necessary or useful. Good luck and fly safe!

RE: cooling system help for auto engine conversion

Dos Canis,
     Thanks for the tips. I am already on the flyrotary list, but I was seeking some different veiws on the subject. A lot of the aviation community tends to cling to an idea that works whether it is the best solution to a problem or not, a good example being magnetos that have to be rebuilt every 400 hrs are considered to be more reliable than an electronic ignition which may go for 200,000 miles plus in a car without any sort of wear or failure.
     I am indeed basing my installation on a combination of flying and successful conversions. I am using a cooling system based on Tim England's Chevy V-6 Velocity, an engine mount based on Ed Anderson's rotary RV-6 and Neil Kruswyck's rotary 235 Lancair, and I am using Tracy Crook's redrive and engine computer. It's kind of like putting together a big jigsaw puzzle, but there is no picture and you have to cut the parts to fit!  Mike C.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close