The fuel lines are now complete:
These Apikol transmission mounts have been sitting in a bag for a couple of years now, I finally decided to replace my worn 034 Motorsport density line mounts with the Apikols.
What is immediately noticeable is how much thicker the Apikols are than the street density line. I never had any complaints about the 034 mounts, but in keeping with aftermarket part advertising philosophy, if it’s bigger it must be better.
I was in the process of installing my motor when I made this swap, which seemed like a logical thing to do, it is, but I had an unanticipated delay with these mounts. You see, since they’re thicker they require a longer bolt, a good amount longer as a matter of fact. So much longer that my S4 said, uh-uh, that’s not going in without a fight. Getting the passenger side bolt through was a major pita. As a reminder, the bracket for the transmission mounts sits directly below the downpipes, those 3″ downpipes that all aftermarket equipped cars must upgrade to. On top of that there is the heat shield between the down pipe and where the bolts sits, making it even harder to put the bolt through as you are putting the motor in the car.
Why did I choose to install these while putting the motor in? So that with them not yet in place the transmission brackets would easily clear the sub-frame and make putting the transmission and motor in easier.
After a while, much too long, some profanity, thoughts of saying screw it I’ll put the old mounts back on, and an idea to reverse the bolt – which soon became apparent was not going to make things much easier, hallelujah! It finally fell into place.
The driver side was also a bit of a challenge, but not nearly so much as the passenger side. In all it took longer to put those two bolts in place than it did to get the motor and transmission back into the car.
It better ride like it’s on pillows after all that effort.
I had been excited to try out a Silly Rabbit Motorsports modified S4 intake manifold. Mine had work done to enlarge the plenum as well as add an adapter so that I could mount an RS4 throttle body to the manifold.
As can be seen from the picture above, the use of the RS4 throttle body necessitates removing the stock S4 fuel rail and using either an RS4 fuel rail or an aftermarket flavor. I went with the Integrated Engineering fuel rails.
Upon test fitting the modified intake manifold I discovered a couple of fitment problems.
Unfortunately the Integrated Engineering fuel pressure regulator housing did not have much clearance from the lift point at the back of the motor.
I pressed on, adding the RS4 throttle body, RS4 metal throttle body boot, and RS4 pancake (up) pipes. I then found that the up pipes had some interference with the plastic pieces protruding from the cam gear covers.
I decided at this point that I’d had enough with trying to get this intake manifold to work with the RS4 parts that I have. My assumption is that if I were using a silicone throttle body boot and standard aftermarket up pipes I may not have had the problems I was encountering.
In the future I might give this intake manifold another shot, but I’ll have to do so with some customized up pipes if I do.