Carb testing.

Builders;

Here is another look at carb testing tonight.

.

.

Above, a mutually beneficial process. The engine is one I just finished upgrading and rebuilding. I’m putting some break in time on it before it goes into the box and get shipped to California. A few hours will let me make any fine adjustments it may need, ( At 2.5 hours, it has needed literally none ) and verify things like the differential compression and the timing. Rather than just run fuel through the engine and remind my neighbors that we all chose to live at an airport, This exercise has the benefit of allowing me to run the carbs of several other corvair builders, and verify they were correctly rebuilt. The carb pictured is a used MA3-SPA, that I know has not had fuel in it in many years, it is not rebuilt, and yet it ran perfectly. However not all rebuilt carbs have this behavior. They are often tested here.

.

Today, I sell NEW Rotec carbs, and because they are made on CNC equipment and they are new, they all run perfectly. Years ago you could say that about rebuilt certified aircraft carbs, but in recent years we have seen a rash of these carbs with serious issues. In the last 3 years I have tested more than 25 of them, and found important issues with about 30% of them. This is obviously unacceptable. To assist people who already own one, I offer test runs on my instrumented test run stand, but going forward, I like to steer builders to a Rotec carb, with I keep many in stock, and are actually less expensive than a rebuilt certified aircraft carb.

.

.

.

William

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.