RE: Flywheels: them big, round, heavy frisbe

[Glen Powell <gpowell@acacianet.com>]

Does the ECU actually count the teeth?  

Yes. It is by counting the teeth that the ECU knows the speed of the engine.

It is possible, (and common on 
other ECUs) to guess at TDC after making the reference signal by knowing 
how fast the engine is turning.  The ECU merely trips a timer, and fires 
the plug at the prescribed point.

> More than anyone ever wanted to know about turbo flywheels.....

There's more I'd like to know :-)   How heavy are they?

I have one out I can weigh. I'll also weight the 'lightened' KUQEFH flywheel. (NO! it's not together yet F'n&#$*^&@%@#amn!)

-glen