CAE engine - interchange, applications

[vtraudt]

My 2010 A5 2.0T quattro automatic has the CAE engine code (and low oil pressure, intake flapper code, oil leak, misfires, etc).
When time comes, I want to swap entire drivetrain.

What engines fit?
What are the 'sister' engines and appilcations on the VW side?

Also: what donor car if I wanted to do a manual swap?

[old guy]

A lot of good info in this thread: Clicky click®

[vtraudt]

I have another CAE (just the 3 letters) engine code car: 2012 Audi Q5.

Still no real info on the 3 letter only CAE:

Found:
CAEx = north american emissions version of the EA888 Gen 2 longitudinal petrol only engine (EU emissions is CDNx).
CPMx = north american emissions version of the EA888 Gen 2 longitudinal flex fuel engine (EU emissions is CFKx).

The fourth character denotes the output tune, this is just a an adjustment in the ECU, the engines are physically the same.
CAEB/CPMA = 208bhp aka 211PS, CAED/CPMB = 217bhp aka 220PS.

[Smac770]

What do you mean no real information? There's an excessive amount of information on the CAE out there. And you posted exactly such in that same post.

[vtraudt]

What do you mean no real information? There's an excessive amount of information on the CAE out there. And you posted exactly such in that same post.

"forth character denotes output tune". I don't have 4th character. Does it mean I don't have output tune?

I was looking for cross reference to other year/make/model cars that use interchangeable engine or or long block or short block.

[Smac770]

The physical base engine is denoted by the three character code. That's why the sticker on the physical engine has only three characters, CAE.

The fourth letter denotes what output level the ECM is operating the engine at. So CAE is the engine, CAEB or CAED would be the engine + ECM. A 2013 A4 has a CAEB "engine", producing 211 PS. A 2014 A4 has the exact same CAE engine, but it's called CAED, with the ECM now configured to produce 220 PS. The B and the D are just "the next letter", there was a CAEA defined but never used, and no CAEC that I've ever seen.

So if you're doing an engine swap to replace a broken engine, you just need another CAE engine (or CPM with correct modifications). Also noting that B8.0 CAE and B8.5 CAE are the same engine, but the accessories differ and have to be accounted for when swapping between vehicle generations (ie, the engine speed sensor is a different one for B8.0 vs B8.5, and the accessory bracket is different as B8.0 uses hydraulic and B8.5 uses electro-mechanical).

You have older Audis, where there was only the three character engine code. Audi moved to adding the fourth character with the EA888 release around 2007, engine codes that start with C and on.

[vtraudt]

The physical base engine is denoted by the three character code. That's why the sticker on the physical engine has only three characters, CAE.

Thank you for the explanation. Just wondered why they simply omitted stating the 'state of tune' (with the 4th letter) on some CAE engines.

is my 2012 CAE a "EA888 gen 2"?

[Smac770]

Yeah, all the B8 A4/A5/Q5 2.0T are EA888 Gen2:
E10 rated: CDN for EU emissions, CAE for US emissions
E85 rated: CFK for EU emissions, CPM for US emissions

except B8.5 in some markets (not here), they released the EA888 Gen3:
E10 rated: CNC for EU emissions
You can identify this engine from Gen2 because it has two N205 solenoids on the upper timing cover, vs just one on the intake side for Gen2.

The engine core itself will be just the three letters, but Audi will always refer to the "engine" in a particular vehicle product with the full four letters.

B9 uses the Gen3 evo and Gen3 b-cycle engines. Later (MY21+ here), the Gen4 (12v MHEV versions of those same engines).