A box with a car part arrived today, usually this is a happy occasion, and that held true today.
The inner box with the MFactory logo gave a clue to the contents.
Designed for the Audi B5 S4, a helical limited slip differential.
I am impressed by the apparent value of the MFactory product.
In a later post I’ll get into the details that led to my decision to purchase the MFactory Helical LSD.
I don’t plan to install the LSD right away.
For now I’ll just admire the craftsmanship.
With the coilover suspension components off the rear of the Avant for some work I decided the time was right to replace the rear sway bar end links with a set of the 034 Motorsport length adjustable sway bar end links.
The Avant is equipped with the Neuspeed rear sway bar, arriving set at the softer setting, which I plan to keep, and what appears to be an Apiko Rear Differential Mount.
With easy access to the stock end links the swap was pretty easy.
I did initially forget that the lower bolts have the hex attachment located at the end of the threaded part of the bolt.
Once I reinstall the coilovers I’ll work on adjusting the length of the end links.
I’ve already been posting about this Brilliant Black Avant, but have not yet given the back story on how it arrived and what the state of the S4 is.
As mentioned before, the experience of working on the Nogaro sedan prompted me to begin looking for a home for that car’s engine. I was keeping an eye out for B5 S4’s that were up for sale and in need of some attention to the engine. On a B5 S4 forum a Black 2001 Avant came up for sale that was eerily similar to the Santorin S4 that I had ordered soon after the 2001 model year S4’s became available – no sunroof and the Silver Alcantara Sport Interior. It also lacked heated seats, just the way I had ordered my first S4.
The car has a handful of modifications, most notably Silly Rabbit Motorsport SMIC’s, Achtuning OCK, an APR Bipipe, AMD K03 tune, Stasis Streetsport coilovers, Neuspeed RSB, and an AMD exhaust. Also the Audi Fat Fives wheels.
The Avant had 287,000 miles when it was up for sale, a number to have concern about, but it also had a stack of papers documenting all the parts that had been replaced over the years, to the point that not much of the original wear components were left, most notably the exceptions being the engine and transmission. There is some exhaust gas making its way into the coolant, a sign of a potential head gasket failure or crack in the head or block, but with a spare 91,000 mile engine and transmission already in my garage, I had a path forward to address the contamination of the coolant.
The Avant was located in Seattle, so I took a flight out and was picked up at the airport in the new (to me) B5 S4 Avant. With a trip in excess of 2,000 miles ahead of me getting on the road quickly was on my mind.
I had some concerns about the coolant situation starting out on the long trip, but raised coolant temperatures were never an issue.
Over the course of the nearly three-day trip the Avant averaged an impressive 28.5 mpg, even with a set of studded snow tires stowed in the back and a fuel tank that rarely was allowed to go below three-quarters of a tank full.
The trip proved to be almost without any issues. On the second night though while switching between high beams and normal headlamps the driver side headlamp went out. This led to me stop the evening’s travel a bit sooner than planned. Thinking the bulb was blown I set out early the following day to take advantage of as much daylight as I could, but to my surprise when I started the car in the morning and turned the headlights on the driver side light illuminated the side of the hotel.
The headlight was the only automotive generated excitement of the drive.