Superior IO-360 Alternate Air

[rtl_flyer]

My RV7 project is beginning to move onto the engine.
I have an IO-360 Superior engine. As I am injected I understand I won't need carb heat - but I have been advised I need alternate air. I have had a quick look through the Firewall Forward book but not found any information so far.

An overview, links or advise would be appreciated.

[penguin]

Alt(ernate) air is in case your air intake or filter gets blocked. If you have a Van's air filter use their snorkel and alt air door. If you are just using a hole/trumpet in the cowl in front of the injector, put some fine gauze over the hole and make sure there is a 1/2" gap between the cowl injector - if the hole gets blocked the injector can breathe from inside the cowl (take a look at an Extra 300 cowling if this doesn't make sense). Dan Checkoway also has a different solution.

Pete

[rtl_flyer]

Pete,

I finally found some info late last night in an Engines book. Makes sense now. As the airbox in Vans FWF kit has a flap.

Thanks for the info.