Jump to content
Ultimate Subaru Message Board

Dual Sidedraft carbs on EA81?


Recommended Posts

I posted this up on a motorcycle site im on...figured id post here and see what you guys would say.

 

What I am wanting to do is build a pair of intake manifolds to run a pair of typical motorcycle carbs. The advice I need is what size and what kind of carb would you recommend?

A guy who was running this engine in his VW beetle ran a pair of 40mm downdraft carbs

Right now I am considering a pair of 36/38/40 Mikuni Roundslides, Factory Harley 40mmCV carbs, and a set of factory XS650 38mm CVs.

Do you guys have any other recommendations?

Link to comment
Share on other sites

the hot coolant in the manifold also helps with the fuel vaporization and stops the intakes freezing up in cooler temps.

i made a stainless intake manifold to suit a weber 32/36 a few years back for a EA81 aircraft engine....the owner of the aircraft wanted the water piped seperately.

 

intake ice problems quickly showed up in test stand running....icing was solved by a radiator type intake heater before the carb....a mechanical thermovalve controlled the heating based on the manifold fuel air temps.

 

short manifold paths are needed if your not heating the manifold

Link to comment
Share on other sites

Please sign in to comment

You will be able to leave a comment after signing in



Sign In Now
 Share

×
×
  • Create New...