Re: rotor for 20v turbo engine

[Wallace White <wallace@remdesign.com>]

C1J1Miller@aol.com wrote:
> The metal edge of the 3B 20-valve rotor (that contacts the 5 points in the
> cap) is not as wide as the normal 10-valve rotor.  Replacement distributors
> from Bosch/Audi also include this smaller 3B 20-valve rotor.  At least one 3B
> 20-valve engine has been destroyed from a high rpm/boost misfire; it may have
> been due to using the wrong rotor (leading to a preignition condition).

Could this be? It seems like the tip of the rotor can't be too wide
unless it is greater than (360 deg / NumCylinders - a little), i.e. as
long as it's only connecting to one plug at a time.

Not to say that you shouldn't be able to get the right part, of course.

- Wallace
  '87 5kcstq 150k