[A4] 1.8T engine rebuild, torque specs?

Igor Kessel kbattpo at verizon.net
Tue Mar 30 11:12:02 EST 2004

Westyman wrote:

> I'm assembling my 1.8T engine, and need a bit of help and information,
> hopefully someone here can help. First, the new main bearing set has six
> 'grooved' shells vs. the original bearings only having five. Was this a
> manufacturing mistake, or does one main bearing cap also get a grooved
> bearing, and if so, which one? Secondly, I need the torque specs for the rod
> and main bearing bolts, plus the settings for front crank sprocket and
> flywheel bolts (manual). Lastly, the original engine had the updated timing
> tensioner and belt, recently replaced before that engine went kaput. Is the
> tensioner reusable, can it be recompressed, and if so how? Thanks for any
> help you can offer!

I took the 1.8t head off in my garage and replaced the valves due to the 
timing belt tensioner failure. I did not go inside the bottom end, 
except for cleaning up the piston crowns.

The new tensioner came compressed form the factory. It was held in the 
compressed state by the wire pin with a loop, inserted through a set of 
corresponding holes, very much like a grenade. Once installed, in order 
to release it you pull the pin out, also very much like a grenade.
I guess you can compress the tensioner and re-insert a suitable pin once 

Igor Kessel
two turbo quattros in the stable,
the third one is in the works

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