The Rotec/Ellison carb is quite expensive at over $300 as I recall.
If you have a lathe and a mill you can make your own
side draft 2 barrel car using a low cost Holly float bowl.

This is designed to work with a two rotor P-port and slide
throttle.

Here are some 3D's.

A  marine outboard engine has a self contained ignition
system. It does not require a battery or  alternator or voltage regulator.

One or more of these devices that can fail and cause the engine to stop if you
are using an EFI and automotive the ignition. The TTC has given
us trouble for that reason. If the battery gets low the EFI and
the ignition fail to work.

A certified aircraft engine does not need these to parts to keep
running as the magneto is self contained ignition and of course most
use carburetors or mechanical injection.


Paul Lamar

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