So, my sister's "new" 1988 Audi 80 Quattro is quite a handful. On one hand, I can see why people love Audi, based on those cars. Engines that go to 300K no problems, galvanized metal that refuses to rust, hard as hell paint, reliable Quattro driveline, lots of nice little touches inside (comes with an allen key inside dome light compartment to let you manually crank-close the sunroof if the motor fails).
On the other hand, g'damn, I miss her agricultural Honda. And I love my easy to work on Mazdas. I have a front suspension job in order (struts are shot, strut mounts are shot!!, control arm bushings are probably shot). But I figured, why not first pop in a fresh air filter?
The hardest air filter job so far has been on the RX-8, where I had to push the airbox back into the car to pop it up, before I could open it. Oh Mazda, why did you have to make it so easy?
German engineering on the 5-cyl motor has 5 clamps around the airbox, 4 of them are hard to reach and the 5th is damn near impossible to reach. How it's still on there after 22 years is a mystery to me. The airbox is below the fuel distribution system!, so as you lift up the air filter housing, you are moving the fuel lines, fuel distributor. Most people suggest removing the passenger headlight, which I completely agree with and will do when I attempt the job again.
Here are the steps.
If you look in this photo, the air filter housing is below both black and gray circular contraptions on the bottom left:
<a href="http://www.flickr.com/photos/uksi/5032048020/" title="Engine bay. by ilp, on Flickr"><img src="http://farm5.static.flickr.com/4112/5032048020_9b000c22e8.jpg" width="500" height="374" alt="Engine bay." /></a>
Here are some pictures of the car and some detailing/polishing I did. It needs like a week of polishing. I polished the hood with some aggressive stuff, just two passes (needs fifty...) and it went from looking like it was washed w/ a brillo pad to looking like it has shine, but also a bunch of scratches on it:
<a href="http://www.flickr.com/photos/uksi/5031434243/" title="Center hood polished some, side untouched by ilp, on Flickr"><img src="http://farm5.static.flickr.com/4129/5031434243_a53af5a023.jpg" width="500" height="374" alt="Center hood polished some, side untouched" /></a>
Anyway, back to the engineering.
The front suspension involves funky slotted nuts. The suspension design is somewhat strange to me, as the upper strut mount is basically all rubber. So when the weak factory rubber mount collapses, your front end starts to sag and then eventually the shock goes through the hood. I feel a lot better about the P5's metal strut mounts with just a rubber bushing. Of course, on the P5, it will just rust out.
Driving that Audi right now is a strange feeling. It has 227K. Selecting gears is like rowing a boat. 2nd to 3rd is like bowling and it has a very vague, super smooth, "slips right in" with an inch of play type of feel. Yet it makes solid engagement noises. The steering is vague as well, but the fact is she has so much toe play in the front that if you drove the car up on an alignment rack 3 times, you'd get 3 different toe readings every time. Hope to mitigate most of that w/ the front suspension job.
The stock suspension is notoriously soft, but right now it's really floaty and one broken strut away from having the Lincoln bounce. We hit a 2-inch road construction bump and I wasn't sure what direction the car was going to sway in or move in.
The engine makes an awesome noise though, when you floor on it. Never heard a car like that.