[urq] suddenly lean again and some measurements

[Eric Renneisen]

Here are some rough measuerments taken from my stash of blown hoses.
All measurements done with my cheapie imperial-only caliper, so take
them with a grain or two of salt.

Turbo outlet: 2.35" (60 mm)
IC inlet: 1.95" (50 mm)
IC outlet: 2.5: (64 mm)
Throttle inlet: 2.7" (69 mm)
I've cut off the elephant's trunk from the blown hose, but the stub
that's left is about 0.6" (15 mm)

The silicone pieces from the 034 kit (yet to be installed) appear to be
2.5" for everything except 1.95" for the IC inlet.  Installation might
be a bit, ah, interesting.

Eric R.
'86 urq
'93 urS

-----Original Message-----
From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On
Behalf Of SpotatAshleys
Sent: Saturday, January 06, 2007 10:49 AM
To: urq at audifans.com
Subject: [urq] suddenly lean again and some measurements


Hapy New Year everyone. I hope so anyway.
My first request for help of 2007....
Can anyone with lots of spare bits or undergoing a rebuild supply me
withthe following measurements please ? -

#1
Internal diameter of each end of the turbo to intercooler hose. Internal
diameter of each end of the intercooler to throttle body hose. Internal
diameter of the "elephants trunk" piece of the I/C to T/B hose that goes
to the auxillary air valve 
Vehicle is stock '87 WR.

Many thanks

#2
 Sometime last year I had a problem that I asked for help on but I
regretfully did not keep the replies and the problem went away and I
never found out a cause. Well it has started again. The symptoms are as
follows:

If I accellerate hard in any gear it pulls like a train and the air fuel
meter shows (as expected and desired) a rich mixture. When I lift off ,
change up and re-apply the accellerator the power has gone and the
mixture has gone lean. If I were to keep my foot down this condition
would remain. If I lift off and then reapply the accellerator then the
power returns, the mixture returns to rich and it would  continue to
pull until I ran out of revs. If I keep my foot down instead of changing
up the mixture remains rich so it does not appear to be a case of fuel
starvation. (The sediment trap upstream of the fuel filter is clear as
can be anyway). I have removed the "igloo" and looked at the airflow
meter flap and there is no indication that this sticks in any way -
seems to be free to move. The injectors were new about 2 years ago as
were the injector seals. The injectors are held in place with a steel
injector bracket from a non-turbo coupe quattro and can not move. I have
not fould any holes or splits in any inlet hoses but as you can tell
from query #1 I am intending to replace all these. The turbo seems in
fine condition, never a hint of smoke and was checked for end play when
the engine was rebuilt about 3 years ago. It only ever happens when warm
but this is because I never accellerate hard until it is properly warm.
Any ideas? Like I said, it occurred before and went away so I never
found out the cause. Look forward to receiving any suggestions.

All the best

Keith

'87 WR
'63 Daimler V8


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