Idle curiosity.....cq into S2?

[isham-research.freeserve.co.uk at pop.pol.net.uk]

> One error: the 3B is Motronic as well, the main difference between 3B and
> AAN is the "programmed overboost" feature and distributorless ignition of
> the AAN (early AANs reported to have distributors). The main difference in
> the modification potential for 3B and AAN is that as boost increases to
> insane levels the distributor in the 3B is thought to possibly misfire,
> especially if it has a [wider] MC rotor.

Just about all Audi engines from the MAC11 onwards seem to have
'programmed overboost'.  Certainly both my 1988 ur-quattro and 1990
Type 44 do.

I've never seen an AAN with a distributor.  If it had a distributor,
it wouldn't be an AAN.  The differences between the single coil engine
and the coil-per-cylinder engine are HUGE in that area.

One thing the mechanics might note - crank locking tool #2084
doesn't work on an AAN.  The recess in the harmonic balancer is too
deep. BTDTNDIA.

--
 Phil Payne
 http://www.isham-research.freeserve.co.uk/quattro
 Phone +44 7785 302803   Fax: +44 7785 309674