Hi, the mechanic said that my Audi TQ '86 has a "bent subframe"? How serious is
that? I had a little mishap; drove over the curb and
over a sign and back on to the road. The oilpan was flattened and the car
quickly lost it's oil. I drove it for a block looking for
a parking spot after flattening the sign and the car drove fine, backed it up
and everything, no problems. No problems starting up
either. I noticed that the driver's door opened with a slight hesitation. So
what's a "bent subframe"? Is this something that can be
fixed with a frame puller? Is it worth it? The car drove fine (it's at the
mechanic now), is it ok to drive it the way it is?
That's what I thought it was, I could see there was a dent in it, seeing what I
when over, that's one tough car.
I noticed that there was a slight hesitation when opening the driver's door
after I parked the car, after rolling over the sign.....
could there be more than just a bent subframe?
Yes, there could be more damage than just the bent subframe - there is
probably some permanent set to the unibody. Is it worth trying to pull it
out? If it's minor, then probably not. The cv/u-joint/center bearing mount
on the prop shaft will allow for some minor angle changes - just be sure
that the impact itself (which bent the subframe and thus moved the engine
and tranny) did not damage the prop shaft and it's connected parts - minor
damage to these things will make one heck of a racket at moderate speeds.
Also, be thankful that you don't have a CF driveshaft like the (IIRC)
90q20v's - they don't take too kindly to a strike from a concrete sign
anchorage. Replacing the subframe would be an ideal time to do some
important mount replacements - subframe mounts (4), engine mounts (2),
tranny mounts (2), sway bar mounts (2 mid-supports and 4 end-support rubber
pieces). Check the lower control arms while you're at it - make sure
there's no play in the ball joints. Make sure that your mech uses new
subframe bolts (4) as they are stretch bolts (like head bolts) and should
not be reused. Check with your mech as well to ask if the strike was in the
area of the oil pickup - you can get a replacement at the local auto
wrecker. If you may consider taking the car to the track in the future -
the medians have tires instead of signs there ;-) - you may also consider
putting a "20v windage tray" in there to prevent oil starvation in high g
turns. You can get the tray from the dealer, and it's shown at Huw Powell's
site at (note that you'll need 2 oil pan gaskets instead of 1):
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)
Hi Steve, thanks a lot for your reply, I will print this out for the
mechanic in case he skips on these things.
PS We had a good track up the hill, now it's gone...... but I drive safely, it
was just this one time...
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