[A4] 1.8T engine rebuild, torque specs?
kbattpo at verizon.net
Tue Mar 30 11:12:02 EST 2004
> 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
two turbo quattros in the stable,
the third one is in the works
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