2.2l

[whiteUSPflow]

now how is this achieved? ive seen 2.0L and ive seen some 2.2s in VWs but no ones doing it in the audis.

[ginkof]

prob a stroker kit

[AudiA4_20T]

now how is this achieved? ive seen 2.0L and ive seen some 2.2s in VWs but no ones doing it in the audis.

you need a tdi block from Europe

[absolutegtr]

you need a tdi block from Europe

Yup, the 1.8's cylinders walls are already thin enough going up to a 2.0....a 2.2: would be feasable

[Wizard-of-OD]

Yup, the 1.8's cylinders walls are already thin enough going up to a 2.0....a 2.2: would be feasable

The limit is not the walls,its the deck height.

OP if you want a 2.2 Kit contact me via PM.I sell the parts and I also build the bottom ends per your specs.

[B6Lovin]

1.9L tall block ftw

[whiteUSPflow]

well thanks issam when i finally deside to do it i will contact you but do you think you could do this to my stock block?

[Wizard-of-OD]

Nope,cant be done to the 220mm block.

[mike-2ptzero]

A 2.2 liter using a 100mm crank isn't exactly the best setup for making power since you cant rev it nearly as high as a well built 2.0 liter. Even the Evo guys that run a 100mm crank only rev to 8k while the 2.0 guys rev to 10,500. One of the reasons I am sticking to my 2032cc which I plan on running to 9500 soon.

[A4ringedONE8T]

AEG can be stroked to 2.2l can't it? Using the stock crank (which 2.0 guys use and rev out) and some custom pistons

[whiteUSPflow]

dam 10,500 now thats crazy

[PRY4SNO]

What's the maximum displacement we can get by stroking our cars with out boring them out?

What kind of characteristics would make Jordan stroke his to 2008cc and Mike go to 2032cc? RPM, power band... where/what are the trade-offs for going ever higher in displacement?

Thanks!

[mike-2ptzero]

What's the maximum displacement we can get by stroking our cars with out boring them out?

What kind of characteristics would make Jordan stroke his to 2008cc and Mike go to 2032cc? RPM, power band... where/what are the trade-offs for going ever higher in displacement?

Thanks!

By adding a 2 lite crank you can get around 1.9 liter with the stock bore.



2008cc is 83mm bore with 92.8mm crank while my bore is 83.5mm to get that extra 24cc. Most people dont go above 83mm because they think there isn't enough meat between the cylinders to go with 83.5mm bore, but yet I have been running 83.5 for 5-6 years now.


The higher the displacement the more exhaust gas which means the turbo spools up sooner. Problem is that going with too long of a stroke means you have a lower rpm limit on how high you can rev it, higher revs makes up for the lower displacement.

engine displacment calc in CC

[PRY4SNO]

By adding a 2 lite crank you can get around 1.9 liter with the stock bore.



2008cc is 83mm bore with 92.8mm crank while my bore is 83.5mm to get that extra 24cc. Most people dont go above 83mm because they think there isn't enough meat between the cylinders to go with 83.5mm bore, but yet I have been running 83.5 for 5-6 years now.


The higher the displacement the more exhaust gas which means the turbo spools up sooner. Problem is that going with too long of a stroke means you have a lower rpm limit on how high you can rev it, higher revs makes up for the lower displacement.

engine displacment calc in CC

Nice, thanks!

So, care to offer your take on the ideal balance between displacement and reliability? Stock bore with the 2L crank?

[PRY4SNO]

Also, can you define over/undersquare for me?

I know it's the relationship between bore/stroke but not sure the order of priority.

[AudiA4_20T]

AEG can be stroked to 2.2l can't it? Using the stock crank (which 2.0 guys use and rev out) and some custom pistons

Shawn, your thinking about this wrong, the AEG block is basically an AEG crank with an 83mm bore

I have that same setup on my motor right now, thats the problem is that the block is as high as the 06A block, the TDI block allows for the extra stroke

[dougyfresh]

Also, can you define over/undersquare for me?

I know it's the relationship between bore/stroke but not sure the order of priority.

square being bore = stroke

oversquare being bore > stroke

under square being bore < stroke

some info: http://en.wikipedia.org/wiki/Stroke_ratio#Oversquare




Here is some more reading from the B6 A4 FAQ forum: http://audizine.com/forum/showthread.php?t=187837

I went with 82.5mm bore and 92.8mm stroke

[Wizard-of-OD]

A 2.2 liter using a 100mm crank isn't exactly the best setup for making power since you cant rev it nearly as high as a well built 2.0 liter..

Thats not quite true Mike.Even with the 100mm stroke & 159mm we still maintain a rod ratio higher than 1.5.I have seen a 2.2 motor sing to 10000 rpm's so saying you cant rev a stroker is just a myth.

[mike-2ptzero]

Thats not quite true Mike.Even with the 100mm stroke & 159mm we still maintain a rod ratio higher than 1.5.I have seen a 2.2 motor sing to 10000 rpm's so saying you cant rev a stroker is just a myth.

Is the EVO block shorter?

[Wizard-of-OD]

depends on which block
4G63 or 4G64?

[mike-2ptzero]

depends on which block
4G63 or 4G64?

2003 EVO8, not sure which one they have stock.

[Wizard-of-OD]

2003 EVO8, not sure which one they have stock.

4G63 which is a shorter block

[PRY4SNO]

Thats not quite true Mike.Even with the 100mm stroke & 159mm we still maintain a rod ratio higher than 1.5.I have seen a 2.2 motor sing to 10000 rpm's so saying you cant rev a stroker is just a myth.

Care to explain "rod ratio" and what the 1.5 has to do with anything?

Just doing my part to responsibly join the built BAT club here... help a guy out!

[317ssayzarc]

http://www.e30m3performance.com/tech...atio/index.htm

[PRY4SNO]

Cool thanks. But how does the rod ratio of 1.5 affect us? Why is that the buttah range? Or is it?!

[mike-2ptzero]

Cool thanks. But how does the rod ratio of 1.5 affect us? Why is that the buttah range? Or is it?!

Higher rod ration means more stress on the rod. Even though the rod ratio is slightly higher when running a 2 liter crank in the 1.8T block it hasn't been an issue to anyone even for those that run to 8500 rpms.

[Wizard-of-OD]

True but coupled with Titanium rods & lightened JE pistons it certainly will help.
I have a nasty 1.7 project in the works...

[Four Play]

Higher rod ration means more stress on the rod. Even though the rod ratio is slightly higher when running a 2 liter crank in the 1.8T block it hasn't been an issue to anyone even for those that run to 8500 rpms.

I saw this quite a bit when I was into mustangs, people always arguing about the rod ratio between a 331 and 347, and how a long rod 306 is a shitty idea, but no one ever had any problems with any of the combos.

They also say it wears the cylinders funky because of the increased angularity, but I've never heard of anyone who's been able to prove there is any increased wear where the angularity is the highest which would would be in the middle of the cylinder.

Does anyone have any real experience with a 2.2L that can provide any info?

[AudiA4_20T]

I saw this quite a bit when I was into mustangs, people always arguing about the rod ratio between a 331 and 347, and how a long rod 306 is a shitty idea, but no one ever had any problems with any of the combos.

They also say it wears the cylinders funky because of the increased angularity, but I've never heard of anyone who's been able to prove there is any increased wear where the angularity is the highest which would would be in the middle of the cylinder.

Does anyone have any real experience with a 2.2L that can provide any info?

Issam is building one...

FYI you can also make a 2.1 with your block and just the TDI crank