84 4ksq Timing Belt Catastrophe...HELP!

[gwbutler]

Hello all,

Well...I suppose I had it coming when I tempted fate (aka Audi gods) by telling another lister last weekend that my 84 4ksq was running well and that I had inadvertently fixed a chronic "hard start when cold issue" by over-concentrating a fuel system/injector treatment.  After running fine all last week the car stalled at my local Cumberland Farms (CF) this morning ,..refused to start again, and spewed coolant out the bottom of the timing belt cover.  I foolishly assumed that my water pump had gone somewhere in the CF parking lot where I had made three passes at trying to get to a gas pump (who actually looks at arrows on the pavement near the pumps...right?), that the engine had over-heated, the block had expanded and constricted the pistons...and thus wouldn't start until everything cooled down (but I didn't try again anyway).  After having a flatbed deliver the car to my driveway (less than a half-mile away), I ordered a water pump from a local Foreign Autoparts store...called work...pulled the timing belt cover...and gagged!  The timing belt was missing at least twelve teeth near the water pump...the loose teeth were all over the place!  

Current Condition: 

I can manually turn the engine clockwise (turned it slowly maybe a quarter-turn, then back,...slight cam movement will turn the distributor rotor (currently on #5). Manual rotation will NOT turn timing belt. 

There were no pronounced noises (especially no "clunking") prior to the timing belt going/car stalling.  Knee-jerk guess is that the timing belt was probably too loose, and that the sudden influx of coolant lubricated things at the vibration damper and caused the belt to slip...and then lose teeth...just a guess. Anyway... I have a few questions:

BTW,...I have a Bentley's...but

1. How do I know if things are ok on the head?

2. How do I know where TDC on #1 is (is this the "rocker arms have play on that cylinder" on the head)...do I pull the plug and check to make sure #1 piston is "all the way up"...and then the crank cam over to # 1 on the distributor, somehow lock the cam pulley, and put the new timing belt on? 

I'll have to delve into the Bentley's for sure.  I just wanted to hear about BTDT's first.  Also, I'll have to contact Blau to rent the tools, (although I'd just as soon buy 'em (used) outright.  I was always afraid of this happening.  Of course it had to happen in the middle of Winter.  Guess what I'll be doing outside on Super Bowl weekend.  TIA

Regards,

George B.
Massachusetts