Eurocode Tuning | 2.5T EA855 DAZA | Engine Build Megathread | Everything Needed

[Info@EuroCode]

As successful as the RS3 and TTRS have been with bolt on performance upgrades and software recalibration, many of our customers are looking for more.

This thread will serve to provide the community a list of all of the factory part numbers, as well as the factory tools required to disassemble and reassemble the long block for connecting rod, piston and valvetrain upgrades.

Please feel free to click on any of the photographs to see our competitive pricing for a complete bundle.

Pictured below is a complete infographic for those who like to visualize what's at stake.



Here are a few more detailed photos of the hardware required.








The complete list of part numbers

07K-103-151-M Front Main Seal, QTY 1
WHT-008-210 12 Point Socket Head Screw, 6mx16, QTY 9
N-911-703-01 Socket Head screw, 8mx70, QTY 4
N-107-655-01 TORX SCREW, QTY 2
N-108-202-01 Hex Flat head bolt, 8mx25, QTY16
D-176-501-A1 Silicone adhesive sealant and sealing compound, QTY 2
N-911-687-01 Hex Bolt, QTY 25
07K-103-383-AE 2.5L Cylinder Head Gasket, QTY 1
WHT-007-848-D Cylinder Head Bolts, 10Mx150x120, QTY 12
N-911-276-02 Screw, QTY 23
07K-109-345 Gasket, QTY 1
07K-103-483-C Oil Separator Gasket, QTY 1
N-912-545-02 Screw, 10Mx1x25, QTY 5
N-906-650-01 B5-B6 Factory Flywheel to Crank Bolts, QTY 8
N-910-428-02 Bolt, QTY 1
06E-103-051-J Seal, QTY 1
070-109-293-B Seal Ring, QTY 2
N-900-411-02 Seal, QTY 4
N-107-104-03 Hex Socket Head Flat Bolt, QTY 15
N-104-514-05 Bolt, QTY 1
N-910-697-01 Seal, QTY 3
WHT-003-463 seal, QTY 1
N-910-568-01 Engine / transaxle - Engine parts - O-ring, QTY 2
07K-121-149 Washer Seal, QTY 1
07K-109-163-A Washer Seal, QTY 1
N-900-351-03 O-Ring, 21x3mm, QTY 1
07K-133-379 Intake Plenum Gasket, QTY1
07K-133-379-G Gasket, QTY1
07K-145-215-A Vacuum Pump Gasket, QTY1
N-910-717-01 Cooling Water pump, Water pump Bolt, QTY 6

The complete list of engine disassembly/assembly tools

Crankshaft Adapter - T03003A
Locking Pins - T03006
Crankshaft Locking Pin - T40069
Camshaft Lock - T40264
Camshaft Lock - Adapter -T40264/2A
Audi oil pan upper to cylinder block plate 2036/1
Camshaft Spacer - T40191
Oil Seal Guide Sleeve T03004
Camshaft adjuster of the exhaust camshaft.-T40297
Crankshaft Seal Installer Kit - T10122B
Gauge - Sender Wheel - T10473
Flywheel Retainer - 3067
Pry out tool for Crankshaft Seal Replacing Transmission Side -T20143/2
Piston Ring Pliers VAS211003
Piston compressor Funnel T40347
Drive out the seal with the -VW195
Seal Installer coolant seal installing 3241/4
Snap-On 24mm open end crowfoot wrench FCOM24A
Press Piece - 60mm - VW415A
Injector/Combustion Chamber Seal Tool Set - T10133C

Tools required to swap OEM valve springs with cylinder head on car

Valve Keeper Tool Kit VAS5161A
Valve Keeper Tool Kit - Guide Plate 2.5L TFSI Model:VAS5161A/39
Cylinder Leakage Tester to pressurize chamber if installing while head is still attached to short block

[Info@EuroCode]

Brought to you by the original #rs3fastmakers, Eurocode is excited to announce the release of our complete drop-in piston/rod combination for the 2.5L evo2 DAZA FL 8V Audi RS3 or 8S TTRS motor.

Capable of supporting in excess of 1000 horsepower, our upgrade requires no modification to the engine block.

Included in the combination are Eurocode/Mahle pistons with CP Carrillo connecting rods. Choose from either WMC rod bolts or CARR rod bolts, specifications for each of the components are listed below.


Eurocode/Mahle Motorsport Drop in Pistons for the FL 8V Audi RS3 or 8S TTRS

• Proprietary MAHLE skirt coating, designed for use with TWAS cylinder walls, no engine sleeving required
• 4032 alloy forging, which allows quiet but strong performance for high boost pressures
• Machined to exact tolerances on purpose-built equipment manufactured by Mahle
• Coated with a phosphate dry lubricant used to defend against strains caused by initial engine start-up
• Hard anodized top ring groove to protect against micro-welding, ensuring ring performance in harsh environments
• Custom H13 material, thick wall wrist pin

Eurocode/Mahle Motorsport Piston Rings for the FL 8V Audi RS3 or 8S TTRS

• Coated steel 1.0mm top, 1.2mm Napier 2nd & 2.8mm oil ring set
• Steel thin ring design which delivers low mass and extended RPM range without loss of ring stability
• Unequaled strength and fatigue resistance

CP Carrillo Connecting Rods for the FL 8V Audi RS3 or 8S TTRS

• Pro H-Beam style
• Capable up to 1500 HP
• Balanced to +/- 1 gram
• Tight tolerances
• Rigorous quality control
• 4330 Carrilloloy
• ISO 9000 certified
• 144mm length
• 22mm wrist pin
• 550 grams for the WMC or 556 grams for the CARR
• Available with WMC or CARR ⅜” rod bolts

WMC Rod Bolts

• High quality, aircraft standard fastener
• Asymmetrical Threads
• ⅜” (9.65mm) diameter
• Supports up to 8,500 RPM and 1250 HP

CARR Rod Bolts

• High quality, aircraft standard fastener
• Asymmetrical Threads
• ⅜” (9.65mm) diameter
• Supports up to 9,000 RPM and 1500 HP

Eurocode/Mahle Motorsport DAZA 2.5L Pistons for the FL 8V Audi RS3 or 8S TTRS





















CP Carrillo DAZA 2.5L Connecting Rods for the FL 8V Audi RS3 or 8S TTRS

[Info@EuroCode]

Eurocode Tuning, through our 15+ year partnership with Ferrea Racing, are proud to introduce the ultimate valvetrain upgrade for the 2.5T EA855 DAZA cylinder head.

Ferrea Super Alloy engine valves represent the highest level of sophistication in valve technology. These valves are designed to handle the extreme heat requirements and punishment of modern high boost, turbocharged engines.

Please feel free to click on any of the images below for more details and pricing information.














Valve Specifications

Intake (10)

• Head Diameter: 33.9mm
• Stem Diameter: 5.98mm
• Overall Length: 104 mm
• Tip Length: 5mm
• 20 Degree SuperFlo. Stock Size. Triple Groove.

Exhaust (10)

• Head Diameter: 28mm
• Stem Diameter: 5.97mm
• Overall Length: 102mm
• Tip Length: 5mm
• 24 Degree Flo. Stock size. Triple Groove. Super Alloy

Ferrea’s Beehive Valve Springs are developed from premium-grade, super-clean PAC alloy materials. These valve springs are progressively coiled with tighter tolerances, heat treated, stress relieved and multistage shot peened for extended life and durability.

Please feel free to click on any of the images below for more details and pricing.

















Valve Spring Specifications

• Single Beehive form designed and optimized to reduce valvetrain harmonics, providing greater spring stability, and reduce spring and retainer masses for increased performance and durability (20)
• Titanium Retainers (20)
• Intake Seat Locators (10)
• Exhaust Seat Locators (10)

For those who are looking for the added benefit of upgraded valve springs, but do not want to remove the cylinder head Eurocode has the perfect solution for you.

Utilizing just three factory tools (VAS6151A Valve Keeper Tool Kit, VAS5161A/39 Valve Keeper Tool Kit-Guide Plate 2.5L TFSI and a Cylinder Leakage Tester to pressurize the chamber) you can remove the OEM springs and replace with our upgraded Ferrea Valve Spring Kit without removing the cylinder head.

[Info@EuroCode]

Replacement NGK Iridium colder heat range spark plug for high horsepower boosted applications. These are the same plugs that our customers run in their sub 9 second QM setups!

Please feel free to click on any of the images below for more details and pricing.

[Brian@Unitronic]

Thanks for your contribution!

[Kai@EliteMS]

Very informative, thanks for posting!

[SlowSedans]

Great post Kai.

[5CYL_BTLSHIP]

Hero

[OE2]

coolio post, props.
It would be awesome if you could also include engine part numbers (crank, bearings, etc.) but that's just me being picky ;)

[RSKYBET]

Fantastic post, well done.

[Kai@EliteMS]

Now start offering a built motor engine program with core swap!

[Brian@Unitronic]

thanks for the great parts and even better service David!

20190410230015_IMG_4055_1 by saxonbrian2, on Flickr

20190414135711_IMG_4067 by saxonbrian2, on Flickr

20190415201650_IMG_4070 by saxonbrian2, on Flickr

20190502113129_IMG_4073 by saxonbrian2, on Flickr

[s316]

total cost include install?

[SlowSedans]

Now start offering a built motor engine program with core swap!

Someone really should do this, I would but my shop is too busy as it is.

[comingabriel]

Someone really should do this, I would but my shop is too busy as it is.

I would not want someone else's engine.

Who can improve the head further than just valves and springs?

IROZ? Anyone else?

Probably why the head was in a box, unless one could not upgrade the head parts and the OP did it for them?

[OE2]

total cost include install?

on the low end you are looking at $6k I am sure the higher end rods will push this to $7k easy.

edit to give you an idea...the oem headgasket is $400

[DarkSi08]

I would not want someone else's engine.

Who can improve the head further than just valves and springs?

IROZ? Anyone else?

Probably why the head was in a box, unless one could not upgrade the head parts and the OP did it for them?

Except in the case of cars like the STi or RX-7/RX-8, where replacing the block/case halves/whatever is the cheaper/safer/more reliable option, this is generally how it works when you buy a built short block. Not sure why you wouldn't want someone else's engine - the tuner who built the engine would have done at least the bare minimum to make sure that the block is within spec before assembling. It would be identical to having them build your own.

I'm also curious on the head... Is the head just designed that well? Or is this just the 'easy' path, and the head flows 'well enough'? Curious what the IMS1000 cars are running for head work.

[Bowser330]

Race developments in the U.K. did head porting for iroz


Sent from my iPhone using Audizine

[SlowSedans]

The stock valve springs are fine btw.

[comingabriel]

Race developments in the U.K. did head porting for iroz

This is more closer to what I was looking for.

[Brian@Unitronic]

The stock valve springs are fine btw.

Fine to what? Based upon what testing?

[comingabriel]

The stock valve springs are fine btw.

Can OEM handle 8500rpm? Just asking...
Actually, can OP's posted head products run fine at 8500rpm?

[SlowSedans]

Fine to what? Based upon what testing?

They are actually stiffer than what some are replacing them with. They are fine for 30psi and 8500 in my own testing. Additionally, look at the other engines that share them and the head design which rev higher. Our cars came with a low stock rev limit because of the turbo more than anything.

[S3DUDE]

Excellent presentation. I love the pictures.

[allerum]

They are actually stiffer than what some are replacing them with. They are fine for 30psi and 8500 in my own testing. Additionally, look at the other engines that share them and the head design which rev higher. Our cars came with a low stock rev limit because of the turbo more than anything.

I'm still curious what the dyno graph looks like on a downpipe intake and ic with tune car spinning to 8k. I know the stock turbo would fall-off but I would like to see a graph. If it can be plotted with the RPM drop per shift I think it would be interesting to see if that high has more or less meet between gear changes.

[SlowSedans]

It falls significantly. It's best to shift lower on the stock turbo.

[comingabriel]

They are actually stiffer than what some are replacing them with. They are fine for 30psi and 8500 in my own testing. Additionally, look at the other engines that share them and the head design which rev higher. Our cars came with a low stock rev limit because of the turbo more than anything.

I think the BT IROZ guys are running more than 30psi?

[SlowSedans]

I think the BT IROZ guys are running more than 30psi?

They are but that is irrelevant. The point is that the springs are up to the task. The ease in reciprocal movement is from the lighter retainers.

With more boost the valve gets harder to close, so you need more spring. However as I said before, some aftermarket springs being sold for this application are softer than stock.

Valves are another factor as are keepers but my point stands, the factory springs are good.

[Brian@Unitronic]

They are but that is irrelevant. The point is that the springs are up to the task. The ease in reciprocal movement is from the lighter retainers.

With more boost the valve gets harder to close, so you need more spring. However as I said before, some aftermarket springs being sold for this application are softer than stock.

Valves are another factor as are keepers but my point stands, the factory springs are good.

What aftermarket valve springs are softer than stock?

[SlowSedans]

What aftermarket valve springs are softer than stock?

I'm not going to say only because it's two different popular offerings (maybe more I dont have data on) from more than two popular resellers. I'm not here to hurt sales of viable products.

[OE2]

ferrea and supertech are the only two spring manufacturers I know of.

[F16HTON]

Looks like Eurocode is offering a CNC porting based upon IG

https://www.instagram.com/p/BxnoKdqhK40/

[David@EuroCode]

Can OEM handle 8500rpm? Just asking...
Actually, can OP's posted head products run fine at 8500rpm?

They will run at 8500rpm but not without issues, having taken several heads apart that ran at or above 8000rpm with 30+psi, we can say with confidence that we would not recommend doing so. The Ferrea valve springs we offer are designed to function for use at 8000-9500rpm, you can go higher but this is the recommend.

[David@EuroCode]

They are actually stiffer than what some are replacing them with. They are fine for 30psi and 8500 in my own testing.

The stock RS3 springs are NOT stiffer than the Ferrea springs we offer, I have listed information below on the rating for stock vs. Ferrea. We do not recommend running the oem valves at or above 8000rpm. In fact, if you plan on running the car at or above 8000rpm, we also recommend upgrading to the Ferrea replacement valves. Their triple grove keeper area has a different dimension than stock to eliminate the valves from having play when the springs are compressed.

Stock 75 lbs seat / 155 lbs open
Ferrea 85 lbs seat / 185 lbs open
Note: The correct spring pressure is measured with the Ferrea seat locator at install heights for this application.

Additionally, look at the other engines that share them and the head design which rev higher. Our cars came with a low stock rev limit because of the turbo more than anything.

The part number for the OEM valves springs are listed below, what OE applications have you found them in that rev at 8000rpm and above?

Stock RS3/TTRS valve spring part numbers

Exhaust
06F-109-623-G

Intake
06F-109-623-B

[David@EuroCode]

I'm not going to say only because it's two different popular offerings (maybe more I dont have data on) from more than two popular resellers. I'm not here to hurt sales of viable products.

To clarify, we are not one of the two "popular" re-sellers that are offering "softer" than stock springs. So feel free to name the "two" different popular offerings, no need to name the more than two "popular" re-sellers who sell those softer springs. I'm pretty sure they don't even know they are selling them, the "popular" re-sellers that is. So kindly share with the community this very important information, people are being taken for a ride and they deserve to know if what you are saying is accurate, thanks!

RS3 Valve spring rate vs. Ferrea info

Stock 75 lbs seat / 155 lbs open
Ferrea 85 lbs seat / 185 lbs open
Note: The correct spring pressure is measured with the Ferrea seat locator at install heights for this application.

[SlowSedans]

Never said you were Serabi.

[OE2]

so, who are the softer spring manufacturers?

[Patrick_l52]

Hi david if I wanna rebuild my rs3 engine (daza) which mean the pistons n rods u provided is plug n play without any modification right ? What is the cost ? Can u pm me for the pricing ?

[Eat.Sleep.Race]

Hi david if I wanna rebuild my rs3 engine (daza) which mean the pistons n rods u provided is plug n play without any modification right ? What is the cost ? Can u pm me for the pricing ?

The kit is around $3500 for the drop in pistons/rods/rebuild kit. Motor build is usually $3600-4500 labor.

Nice kit they sell! I am about to purchase mine as soon as they call back :)

[mtwallace85]

The kit is around $3500 for the drop in pistons/rods/rebuild kit. Motor build is usually $3600-4500 labor.

Nice kit they sell! I am about to purchase mine as soon as they call back :)

I haven’t had any trouble getting them on the phone, just call in during business hours and hit technical support and there’s a good chance Dave will pick up. We’ve spoken several times over the past few weeks and he’s been extremely helpful and informative. I just recently received my pistons and rods and am looking to probably do my build in July. EuroCharged Canada just tuned a TTRS with their sport pistons recently and it put down 980whp. Can’t wait