I have been reading A LOT of miss information on this site and others and myths about 2.7's, 2.8's and 3.0's. A lot of people CLAIM that you can not turbo or supercharge the 2.8 because they are not built to handle this. I also see people always leave b.s comments to other people with valuable questions and tell these people to sell there car and get a 2.7. When I read these comments I just had to RALMAO every time.

It seems either people who said this were misinformed or made it up or maybe posted info they have no clue on what they are talking about. The people who are doing this, I would like to call these people out because anyone can read brochures and magazines, until you get your hands dirty and actually dig deep, you will not know other than what has been said. Telling someone to sell there car because you like something alts and then totally misinform them is ridiculous.

Im a Brit who has been racing motocross my whole life along with racing enduro and doing fmx freestyle. I also own a successful powder coating shop that also keeps me busy. Building motors and toys is a dedicated hobby for me when race season is over. I have built many motors in my 34 years of age. I usually build high hp chevy V8's like LSX blocks from pro injected, turbo, supercharged and standard high rev small blocks and even big small block motors all the way up to 488. I have been into 4 and 6 cylinders for the past 11 years including complicated setups because times have changed and the more you know, the cheaper it becomes to your wallet.

One fact about these motors that I would love to clarify first is both the 2.7 and 2.8's have more in common and few differences. 1. The 2.7 and 2.8 have the exact same forged cranks which is why to get a new crank for these, your looking at $1500 + easily all day long. 2. The 2.7 and 2.8 are the EXACT same cast iron block. For those who say well the 2.7 is a 4 bolt main, well true BUT the 2.8 blocks have the extra holes at the bottom of the block to drill and tap for 4 bolt main caps.

The only difference between the 2.7 and 2.8 besides one is turbo charged and one is not, is the computer setup, injectors and fuel pump because in order for turbos and superchargers to work correctly, you need to add more fuel to the air mixture. This can easily be changed on the 2.8. For the computer to handle turbo charging or supercharging, all one has to do is send your computer to a proper performance shop that can re-flash and chip it to accept the upgrades you have added. All they need is the information you provide them of what you have done and what you are looking for. This cost ranges from $500-$700 U.S.

I would also like to clarify another false statement that I read. The 2.8's compression is to high and the motor is to weak and they can't be turbo or supercharged bla bla bla bla bla and the 2.7 is much lower compression and stronger and people should sell there 2.8's and get a 2.7 instead. This is 100% false in most ways for the 2.8 because again, it shares the EXACT FORGED crank and connecting rods that the 2.7 yields. FACT: Factory 2.7's compression ratio WITHOUT turbos are a 9:3:1 ratio where as the 2.8's are 10:3:1 ratio. By the time you add the twin turbos to a 2.7, your looking at even higher compression ration than a stock 2.8.

People can run turbos and superchargers on a 2.8 factory block without a problem at factory compression ratios, but it would be better to drop the compression to the 2.8 for maximum power or it will defeat the purpose of turbo or supercharging the motor. There are a few companies that my friend goes threw that you can purchase 8:7:1 and 8:3:1 forged pistons and new beefier forged connecting rods.

The only other small difference between 2.7 and 2.8's are the bore and displacement. The 2.7 has a bore of 3.18(81mm) and a displacement of 163 cu. inch and the 2.8 has a bore of 3.25(82.5mm) and a displacement of 169.1 cu. inch do to the larger bore. Both are the exact same cast iron blocks with 4 main bearings. There are sites and several videos such as on youtube where people have successfully turbocharged and even bi turboed a 2.8 AND a 3.0, the hoods had to be cut and modified for the 3.0 to fit 2 turbos but they got the job done. The 2.8 leaves a little more room under the hood.

People also forget, you can run universal turbos all the way to the rear of the car before the rear valence like a lot of people are now doing which makes for a concealed sleeper look until the turbos start to spool which is exactly what I will be doing. You have to run more plumbing and longer cooling lines, but it is easier than cramming them under hood, PLUS, by the time the air gets to the intercool and hits your motor, it will be a HUGE difference in temp which will result into cooler and denser air charge. I would also like to state that there are also companies who build headers for these cars which I will post a link to a company that I had gotten mine from. They are expensive, around $300-$500 US but can be purchased. The headers for turbochargers are more expensive than non turboed do to design and the fact that one's for turbos are made out of 14 gauge stainless steel tubing for strength and reliability. If you do what I plan on doing and run the turbos at the rear of the car, you can purchase standard stainless headers.

The cheapest supercharger I have found for the 2.8 is just under $4,000 and the most expensive was just over $7,000. Cost wise, if you know what to buy, know how to tune or know of a reputable shop that knows how, your good at wrenching and at least know someone who can tig weld, you can purchase a quality universal twin or a larger single turbo all in one kit on ebay that comes with an intercooler, plumbing, silicone sleeves, clamps and waste gates for less than the cost of a supercharger. Over 90% of the the big named companies sell the exact same turbochargers. Garrett turbos are in almost all turbo charged vehicles and are a world known turbo and reliable and are built in many different sizes for more boost, hp and torque.

I will include some links to videos where people have turbocharged there 2.8 and 3.0's and a few sites where my friend buys his parts and where I will be purchasing and already have purchased from for my Audi a6 quattro with a 2.8 that I have yet to touch. I also have a link to a 2001 audi a6 3.0 with twin turbos that should silence people and make them say WOW. I will also post some other links like the methanol injection kit I will be getting and a tech sheet of the 2.7, 2.8 and 3.0.

I just finished my 2010 Subaru STI rally addition that has the biggest blouch turbos that blouch makes. Travis Pastrana even signed my dash as his approval I will post a link to the pics of it that is on my myspace including dyno sheets. We tuned it and dynoed the motor out of the car first to get it running smooth and then dynoed the motor in the car and tuned it. Right now We tuned it to just under 630hp and 710lb ft of torque to all 4 wheels at 28lbs of boost which is more than enough for the streets. We did dyno it at just over 873hp with the methanol injection kit I have installed at 36lbs of boost. I have not done any recent dyno's but I would love to find out soon just how much my STI can push out at safe boost levels. My audi is my next project. I will start posting pics of it soon. My friend and I are building and dropping a fresh 2.8 in it. Here is the link to my subaru and some of my 2 stroke dirt bikes I race during A.M.A and enduro race season. I also do fmx freestyle as well. I have a bunch of pics of my other projects and motocross events that I have raced including my dirt bikes that I own. https://myspace.com/interior_fire_fighter/photos

Here is a link to youtube videos where people biturboed audi a6 2.8's and others that have single turbos or superchargers.
https://www.youtube.com/results search_query=audi+a6+2.8+quattro+turbo

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