2.5l I5 swap

[Sheehanigans]

What's up guys, I am going to be doing a 2.5l I5 swap into my s4 with a big turbo similar to the new ttrs and hoping to make some good numbers when all said and done. Just curious as to what information you guys know about this regarding the ecu/engine harness/standalone. I understand that this is not an easy swap and with require a lot of fabrication, so hopefully I can get more helpful information rather than people saying how much work it will be and that it will no fit. Thanks in advance!

[Monty23]

I'll be doing this swap in the near future as well. If you want to stick with an oem ecu, use the 2005-2006 2.5 ecus as they are very similar to the B5 s4 ecu from a tuning perspective. Harness will need to be adapted to use our instrument cluster. Speak with Hank at irozmotorsports if you are serious about this. You will need oil pan or a custom oil pan/ oil filter adapter. The nice thing is the 07k apparently bolts up to the 01e without any adapter plate needed, but you will need to shim or use the iroz starter. You will also need Hanks flywheel and an 07a clutch kit.

Are you doing rods and pistons off the bat?

[Sheehanigans]

I'll be doing this swap in the near future as well. If you want to stick with an oem ecu, use the 2005-2006 2.5 ecus as they are very similar to the current s4 ecu from a tuning perspective. Harness will need to be adapted to use our instrument cluster. Speak with Hank at irozmotorsports if you are serious about this. You will need oil pan or a custom oil pan/ oil filter adapter. The nice thing is the 07k apparently bolts up to the 01e without any adapter plate needed, but you will need to shim or use the iroz starter. You will also need Hanks flywheel and an 07a clutch kit.

Are you doing rods and pistons off the bat?

I will be purchasing iron motorsport adapter plate for the Trans and the custom oil pan they have, I wasn't planning on doing the Pistons and rods off the bat but that may all change..

My plan was to fab everything up and get it running right at first, then see what it can hold until.something goes then spa another stock one it in and build that motor on the side. It wouldn't be a bad idea to just throw rods and pistons in it at first

[Sheehanigans]

Also I have k04s and a lot of bolt on for the 2.7t turbo along with engine for sale

[sjmelling]

I'll be doing this swap in the near future as well.

Changing directions from STK or swapping another car? Looking forward to see progress on this swap. A friend of mine has an 07K in the lobby of his shop. We joke about the swap on a regular basis.

[Monty23]

Changing directions from STK or swapping another car? Looking forward to see progress on this swap. A friend of mine has an 07K in the lobby of his shop. We joke about the swap on a regular basis.

Planning to push the current motor hard this spring and see how it holds up. If it breaks I'm going to swap the 07k in and shoot for stupid power

[Royal769sr]

I just saw Hank's ttrs run a 10.1 in the 1/4 on Friday.
Made me want an i5 so bad.

[Monty23]

I just saw Hank's ttrs run a 10.1 in the 1/4 on Friday.
Made me want an i5 so bad.

With 142-146mph traps... 07k is nasty. 500wtq by 3750rpm and 750whp with the Xona 8267.

[christianb5s4]

Planning to push the current motor hard this spring and see how it holds up. If it breaks I'm going to swap the 07k in and shoot for stupid power

How do you think the rest of the drive-train will hold up at stupid power levels? This chassis is pretty stout, after riding in jballou's car putting 600whp down and the car felt totally capable and planted, I wonder where the power limits of the chassis are.

[zillarob]

Id do pistons right off the bat. Have an apr stg1 ttrs here with all the ring lands jacked.

[landfill]

The weak points in the drivetrain are the axles and rear end. The 01E tranny can put up with
abuse and big power especially if you use a TDI box or dog box. The solution for axles is DSS
axles and for the rear diff do the skyline r34 diff mod that usp and others use. Contact usp, 034,
and Issam (INA Engineering) for info on that one. Anyone interested in the swap talk to Hank.
He just started making a whole slew of other products for the 07K swaps. He has motor mount brackets,
flywheels, tubular manifold, Intake manifold, oil pan. A whole bunch of stuff. He made me a couple of parts
for my AAN urs6 as well.

As a suggestion to OP go with a built motor and standalone right from the get go. I think Hank's been
using VEMS for his shop cars except the ttrs. As far I know the stock bottom end in the 07k isn't going
to hold any big power figures.

[landfill]

Did anyone see the video of usp's vrt s4 shatter a rear axle at World Cup finals
at budds creek? Crazy footage lol.

[LuisS4]

This sounds like an interesting and different approach to make a beastly B5. Im not going to tell you what your trade offs are going to be in terms fun drivability as they should be obvious going from a biturbo to a single. I will tell you this, I worked at my local Audi dealer till not too long ago and I saw 3 APR tuned TTRS come in with the same issue. All 3 threw a rod right out of the block. Now I can't definitively say that the issue was the rods themselves as bad tuning can also be a possibility. But if I were you I wouldn't go through the trouble of doing all this if you're not going to beef up obvious weaknesses from the start, Always remember that a powerful car is only as good as its weakest point. Im not trying to discourage you, but after wrenching on these cars for a while you get the idea of why you should always build everything to be capable beyond what you actually plan on making. Its just a more efficient way of spending your time and MULA

[zillarob]

I think the pistons are the weakest link. Prob blew the lands off and jammed up, breaking the rod.

Looks like they tried using a cast piston and casting in some other metal around the top ring for strength. Doesnt appear to have worked very well.
The one here has a destroyed piston and 2 with cracked 2nd ring lands. The last 2 have collapsed lands pinching the 2nd ring.
The destruction, cracks, and tight rings are in the same place on all the pistons.

[Sheehanigans]

I plan on fabricating the manifold intake and exhaust myself, as for axles what's the advantages of dss axles compared to raxles?

As for the rear end I plan on doing the r34 rear diff

I have decided to do forged rods and pistons and hopefully I can do a forged crank, then down the line build the top end

As for drive ability I dint plan on putting this massive turbo that takes forever to spool I want something practical, but I am also looking at funtionabilty, if I can make 600awhp then I will be perfectly happy because when maintenence time comes or something breaks there will be much more room in the engine bay

[slow ride]

Most times in a stock build they make the ring gap too tight for high power levels and the rings end up butting and cracking the ringland. It's something to check out vs needing something custom right off the bat that might get you to a little higher power on the stock parts.

[Monty23]

The consensus is you can make about 400 whp on stock rods and pistons with the 07k. I'm planning to throw a stock motor in, get it running right and swap in a built motor once I feel confident the setup is solid. It takes a lot a variables out of a complex project. The more stuff you change at once, the more crap Murphy will throw in your face. There is a reason the majority of people that go from stock to insane all at once end up parting their builds, to many issues to deal with after investing so much up front.

[MacDaddy]

Personally I would just build a Quattro coupe, but here is a link that will shed some light if you really want an I5 in a b5...

http://www.speedhunters.com/2012/07/...that-one-audi/

[italia8287]

Also I have k04s and a lot of bolt on for the 2.7t turbo along with engine for sale

What kind of stuff do you have for sale?

[Sheehanigans]

What kind of stuff do you have for sale?

http://www.audizine.com/forum/showth...2#post11236622

Here is the link for the stuff I have for sale, basically everything from a stage 3 s4 but no fueling or ecu

[Sheehanigans]

The consensus is you can make about 400 whp on stock rods and pistons with the 07k. I'm planning to throw a stock motor in, get it running right and swap in a built motor once I feel confident the setup is solid. It takes a lot a variables out of a complex project. The more stuff you change at once, the more crap Murphy will throw in your face. There is a reason the majority of people that go from stock to insane all at once end up parting their builds, to many issues to deal with after investing so much up front.

This was exactly my thinking, then I know it will run right and then when building the motor its more of just dealing with problem with the built motor running right now having to deal with all the wring at the same time

[Scotty@Advanced]

The nice thing is the 07k apparently bolts up to the 01e without any adapter plate needed

You need to make significant mods to the trans to get it to bolt up to the 07K.

[Audi_From_Hell]

Shave off the top two mounting holes on the 01e, it's not that significant. Audi did this themselves in their race cars for faster maintenance and engine removal back in the day.

[Peter1.8t]

You need to make significant mods to the trans to get it to bolt up to the 07K.

Care to elaborate?

[Scotty@Advanced]

Care to elaborate?

Among st other things the top of the trans need to be cut off.

[Monty23]

Just a little nip and tuck. After getting the 07k in there its not like there would be any reason to put the 2.7t back in.

[Sheehanigans]

Just a little nip and tuck. After getting the 07k in there its not like there would be any reason to put the 2.7t back in.

This exactly, little progress, trimmed the top of the Trans and have the 01e bolted to the 07k so I can try and start fabbing the intake and exhaust up.

Will be ordering a CNC plasma table that will be here soon and can cut exhaust manifold flange, turbo flange, and downpipe flange. As for not I ordered a forged intake manifold flange from ie and can start fabricating the intake manifold and motor mounts.

Anybody have a suggestion as to what throttle body to run with this setup? Plan on running a prediction 6766 turbo with open dump waste gate and proper fueling.

[Penpusher]

Personally I would just build a Quattro coupe, but here is a link that will shed some light if you really want an I5 in a b5...

http://www.speedhunters.com/2012/07/...that-one-audi/

Different motor entirely.

[nothingbutwin]

has anyone started this swap yet?

[MikeyB3]

Is it me, or did OP find a warehouse full of gold and cash? I mean, good on you that you can afford multiple builds because that's amazingly awesome. But, why not build it once, the right way?

[uponone nogaro]

Nice

[jaychen]

has anyone started this swap yet?

some guy on facebook has his motor sitting in a car, and is constantly saying how he will put down 850whp when its running.

I will be very surprised to see this. All the power to him if he traps 145mph, because that's where he should be with 8XX Hp

[demonmk2]

are there any pictures roaming around? curious how the engine would sit in the bay. and are any of you guys going to run all the accessory s? I.e. A/C

[jaychen]

are there any pictures roaming around? curious how the engine would sit in the bay. and are any of you guys going to run all the accessory s? I.e. A/C

There are a few on the Audi Performance & Builds page.

It sits around 2" further forward than the VR6.

[Audi_From_Hell]

[Nollywood]

Sweet! I'd love to see a completed car.

[S4tech2]

That is the coolest thing I've seen

[GrapeBandit]

better pic

. . .carry on

[S4tech2]

Even cooler, I wanted to do this a while back but it took me 4 years to go stage 3 so I figured I shouldnt.

[Penpusher]

I'm sure if you drop if off at Iroz with $15k he would do it for you.