That 370z info is awesome. Danny is the fucking man, I’ve probably said that a million times when refering to FI, but he was a great guy to talk to and delivered exactly what I wanted with a vband flange setup so I could weld my millteks to the catback and have it look great and be leak free. Best fitting exhaust I’ve ever installed on any car, and i’ve done more than a few exhaust system installs.
Oh you mean something that Fast Intentions built? Last time I checked it said Fast Intentions and not aviva…
If Aviva is trying to take credit for anything he helped with more than doing exactly what he was told to do when making the exhaust manifolds from the Mock up that FI built and nothing more I am sure Tony and Danny at FI wouldn’t take too kindly to that at all…
Both #00001 and Pers cars will be dyno’d on a local 3rd party duno Friday, and will be going to the strip (weather permitting) Saturday. Hopefully this will help with the info. Lets keep this thread clean and on topic.
It’s never good to announce a dyno visit… I’m sure myself and some other members will be anticipating the results and to be honest I would love to see another supercharger take the RS4 into the 11s.
This is a serious question…Why would you want to decrease the stock compression ratio? Just to run higher boost and octane? I thought that was more of a turbo motor thing…or going NA to turbo.
I just don’t see a point if the JHM RS4 is making great power on 93 with low boost. I’m sure when they push the motor further and beef up the bottom end they will change the comp ratio with the stroke over plates. Also, with the motor being FSI I’d bet that may increase the max boost that can safely be run, the worry of detonation and knock, and safe tuning, have a lot to do with the fueling system and capability too.
Cause you could then take advantage of the head geometry (same as 2l tfsi) and de-stroke to 10.5:1 which is how the stock 2l tfsi goes to 350 hp on stock internals .
Stupid question: how is the bottom end rebuilt on our cars? As I understand it, sleeves aren’t an option and there’s only a small distance between cylinders.
Nikasil works and has been done.
Re-alusil is not impossible. I sourced a few shops that did nikasil onto alusil blocks. Porsche 944 guys. Ran ok up to 1.5 bar. Dunno about structural integrity of the bns block at that pressure though.
our cylinder walls like almost all audi cylinder walls, are 5.5 mm at their thinnest. Sleeves would have to either be 1.5 mm with the cylinders honed/bored out to accommodate them… Which would leave 2.5 mm walls also known as insanity.
Or you could give up displacement, probably ending up at about 3.8 L
It would still be a pretty huge leap. There’s one company working on this who will pave the way for the platform but until then we will all stand around guessing. Most people are content to work within the confines of the rs4 motor’s power limits…which look to be 550+ whp.
Frankly going much beyond that becomes an exercise in showcasing…it is hardly a daily driver’s four door sedan goal. Look around. The guys who push much beyond 550 whp in just about any platform start to become guys who talk about their cars more than they actually drive them because they are either being worked on or are broken and waiting to be worked on. Those guys are nice for magazine articles and photoshoots, but I want a car I can drive still.