Big Turbo, Intake Manifold, Big Port Heads and other helpful info.

[A4 TSCHUSS]

I found this awesome thread from AudiForums when I was doing some google searches. Just figured I would share the link, it has info for everything you could think of for 2.0 stroker, AEB heads, aftermarket intake manifolds, and much more.

click here

[mike-2ptzero]

I found this awesome thread from AudiForums when I was doing some google searches. Just figured I would share the link, it has info for everything you could think of for 2.0 stroker, AEB heads, aftermarket intake manifolds, and much more.

click here

Yeah, just too bad he is so wrong about not going over 83mm.

[Audi Skate Snow]

mike i should just got thug life and go 83.5 MM :)

[mike-2ptzero]

mike i should just got thug life and go 83.5 MM :)

Might as well go "big" bore for the BIG turbo.


Its funny how people think that there just isn't much meat left when you go 83.5, but those are the people that have never gone 83.5 or haven't seen what the block looks like after its bored to 83.5mm. Problem is that they are only talking about 1mm.


Looks like there is plenty left to me and still holding up well pushing 32psi and I will be pushing even more boost on my next trip to the track.

Pics from when just the rings were replaced.





Pic from when the engine was rebuilt the 2nd time and with the stock head gasket installed.

[Don Supreme]

That's really not a lot of "meat" when you think about how much force and heat that chamber is handling.

[mike-2ptzero]

That's really not a lot of "meat" when you think about how much force and heat that chamber is handling.

Been running it like that for 6 years, 600whp and it isn't like I haven't driven it 8hrs up/down CA coast with it just like that.


Yes because that whole 1mm is going to make a HUGE difference.


Odd thing is that when I had the block tested back in 2002, I was told I could even go 84.5mm if I was looking to go low boost or NA.

[Audi Skate Snow]

Been running it like that for 6 years, 600whp and it isn't like I haven't driven it 8hrs up/down CA coast with it just like that.


Yes because that whole 1mm is going to make a HUGE difference.


Odd thing is that when I had the block tested back in 2002, I was told I could even go 84.5mm if I was looking to go low boost or NA.

i remember doing an 8 hour stop and go drive in your car to vegas.... man that was a lot of trafic.

[sean1.8t]

Been running it like that for 6 years, 600whp and it isn't like I haven't driven it 8hrs up/down CA coast with it just like that.


Yes because that whole 1mm is going to make a HUGE difference.


Odd thing is that when I had the block tested back in 2002, I was told I could even go 84.5mm if I was looking to go low boost or NA.

1- you haven't been making 600whp for 6 years

2- you definately are't sustaining that power on a freeway cruise

3- how many times has that car had a full pull since having over 500whp? maybe 30? 60? 15?......... BIG difference between that aand a daily drever

[Audi Skate Snow]

1- you haven't been making 600whp for 6 years

2- you definately are't sustaining that power on a freeway cruise

3- how many times has that car had a full pull since having over 500whp? maybe 30? 60? 15?......... BIG difference between that aand a daily drever

The car is (well can be) a daily driver... i actually drove in his car for about 6 hours plus on the way to vegas... we drove to vegas for the midnight mayham car races at the track..

we arrived in vegas, went straight to the track from our drive, and raced his car... it was still one of the fastest cars at the track, and we drove it there from 6 hours away and then drove it back home.

[sean1.8t]

^you're missing the point

[Audi Skate Snow]

^you're missing the point

no i see what your saying :)

[mike-2ptzero]

1- you haven't been making 600whp for 6 years

2- you definately are't sustaining that power on a freeway cruise

3- how many times has that car had a full pull since having over 500whp? maybe 30? 60? 15?......... BIG difference between that aand a daily drever

1. I never said I have been making 600whp for 6 years. I said that I have been running 83.5mm bore for 6 years and have made 600whp with that size bore.

2. No one sustains power on a freeway cruise, but if you cant read I said I have made 7hr drives up/down the coast and that was in response to Seans about the heat the motor is taking.

3. I did not keep track of how many pulls I have made since making 500whp over 3 years ago, so I couldn't tell you exactly. But the car was dyno tuned by 034 to get me to 500whp and then again they dyno tuned it for 4-5 hrs to get me up to 600whp.


But the point I was making was that going over 83mm isn't going to be a huge problem for a daily driver that is going to be out of boost way more then they are in boost. My car is only driven at full boost when it is driven and its always at 32psi. Problem is that person that posted on AF has no experiance at all when it comes to a 83.5mm bore and thats because he only runs a 83mm on his own car.

[absolutegtr]

SO whos gonna be the guinea pig and do a 84.5mm bore?

[Don Supreme]

Mike I guess you are the only one with the balls to run 83.5 and I am not being fesicious.

1. I never said I have been making 600whp for 6 years. I said that I have been running 83.5mm bore for 6 years and have made 600whp with that size bore.

2. No one sustains power on a freeway cruise, but if you cant read I said I have made 7hr drives up/down the coast and that was in response to Seans about the heat the motor is taking.

3. I did not keep track of how many pulls I have made since making 500whp over 3 years ago, so I couldn't tell you exactly. But the car was dyno tuned by 034 to get me to 500whp and then again they dyno tuned it for 4-5 hrs to get me up to 600whp.


But the point I was making was that going over 83mm isn't going to be a huge problem for a daily driver that is going to be out of boost way more then they are in boost. My car is only driven at full boost when it is driven and its always at 32psi. Problem is that person that posted on AF has no experiance at all when it comes to a 83.5mm bore and thats because he only runs a 83mm on his own car.

[mike-2ptzero]

Mike I guess you are the only one with the balls to run 83.5 and I am not being fesicious.

I am sure there are others running 83.5 seeing that is a size that JE makes for our 1.8T since they custom made them for my car back in 2002. Even when I had to replace mine 034 was able to get them quickly from JE.

[Don Supreme]

I am sure there are others running 83.5 seeing that is a size that JE makes for our 1.8T since they custom made them for my car back in 2002. Even when I had to replace mine 034 was able to get them quickly from JE.

Do you know what size Lucas runs?

[mike-2ptzero]

No but I did ask him, still waiting for a response.

[HeymyAudi]

What mm is the Stock Piston?

[AudiA4_20T]

81mm

anyway thats a great link, although some of that stuff applies to the transverse cars and not us

[102487thedude]

i really liked the link and found it helpful.

[dougyfresh]

Been running it like that for 6 years, 600whp and it isn't like I haven't driven it 8hrs up/down CA coast with it just like that.


Yes because that whole 1mm is going to make a HUGE difference.


Odd thing is that when I had the block tested back in 2002, I was told I could even go 84.5mm if I was looking to go low boost or NA.

1mm is a lot. That is an increase cross-sectional area between cylinders. A decrease in the heat transfer between cylinders and increase in strength to resist those large cylinder pressures.

Yes, 84.5mm bore IF you run naturally aspirated... Lower cylinder pressures.

[mike-2ptzero]

1mm is a lot. That is an increase cross-sectional area between cylinders. A decrease in the heat transfer between cylinders and increase in strength to resist those large cylinder pressures.

Yes, 84.5mm bore IF you run naturally aspirated... Lower cylinder pressures.

But people talk about something they have never even tried and cant even prove that going 83.5mm bore is bad, they just say it because thats what they think even though they have zero experience with it or actual hard data to back it up. Plus it isn't like there have been any failures on any 2 liter builds just because they were running 83.5mm. If it was that bad I would have seen it fail at some point of running up to 32psi during the last 6 years. The funny part is that the one thing that has lasted the 6 years at 83.5mm bore is the block, oh and the pauter rods.

Heat transver between cylinders? You say that like one cylinder is going to be much colder then the one next to it, fact is that the heat is going to travel thru the the whole head and each of the cylinders are going to have nearly the same temp.

BTW I have seen plenty of people on the A4 forum post that they went 83mm so they could have room to bore again if they do end up with damage on the cylinder wall, so that means they plan on going 83.5mm even though some people on this thread say that its wrong to go that big. Maybe its not that they know its wrong, they just dont have the balls to do it period or do it the first time.

[Don Supreme]

No balls here.... too much risk for my taste.

[O2VW1.8T]

81mm baby