timing belt replacement on '90 Turbo 200

I have just found out that this recently acquired car has not had it's drive belt replace in approximately 150,000 miles.
I assume I'm at risk of blowing the engine if I drive it AT ALL, now.
How long, without significant risk, do these belts normally last ?
Any guidance on DIY replacement ?
Appreciatively,
Courtney
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Most consider anything over 90K or five years (whichever comes first) to be a significant risk.
You should search the history on the T44 Audiworld forum. Lost of help on this. http://forums.audiworld.com/v8 / Don't let the V8 in the link worry you that it the correct part of the forum.
Lost of helpful people.
For DIY you will need to borrow or rent a special tool that holds the crank shaft to loosed and re tighten the main bolt to 240 ft/lbs. If you buy the parts from an on line source you can usually rent the tools.
Really quite a doable DIY project if you have the good part of a day to work on it. Be very sure you understand how to check the valve timing before you start. If you have any questions you might be better contacting a local independent Audi mechanic to do it for you. Just be sure to check around to ensure that the mechanic has a good reputation with Audis. I would guess that it would cost $500 to $700.
Be sure to replace the water pump, idler pulley and front seal at the same time.
Tony
Courtney Thomas wrote:

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

332 lb ft - 450 Nm at the bolt.
http://www.isham-research.co.uk/quattro/torque.html
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
wrote:

Yikes! That's like, 70K overdue for a change. If your 200 was a cat, it would be on its last life...
/daytripper '00 s4 6spd
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.