info@eurocode
Ready to race!
The team at Eurocode Tuning is excited to announce an introductory group buy for our Rotamass Lightweight Crank Pulley Upgrade for the transverse and longitudinal Audi/VW 2.0TSI (timing chain) engine.
The Group Buy is: CLOSED
The Group Buy is: CLOSED
Terms of the Group Buy are as Follows:
- Group buy will run from May 4, 2013, through May 31, 2013
- A refundable $199.95 dollar deposit is required to join the group buy (backing out may affect others)
- We will only ship to the billing address associated with the credit card used to place the order
- All merchandise is in stock, we will ship out the moment we hit the maximum discount of 21 units
- The group buy is limited to 40 units
- Only black pulleys are eligible for the group buy
Pricing:
- MSRP: 249.95
- 1-5 Units $239.95
- 6-10 Units $229.95
- 11-20 Units $219.95
- 21-40 Units $199.95
Please click HERE to place your order. Please add you forum username at checkout so we can update the list.
EuroCode Tuning Rotamass 2.0TSI Lightweight Crank Pulley
Goal
Our goal with the Rotamass Lightweight Crank Pulley was to decrease the rotational mass of Volkswagen/Audi’s 2.0TSI engine. Our Rotamass Lightweight Crank Pulley weighs a mere eleven ounces and is over three pounds lighter than the OEM crank pulley. This reduction in weight from the crank shaft is equal to removing nearly 100 pounds of vehicle weight! Throttle response, horsepower and torque are all improved with this affordable and easy to install part.
Engineering
Designed by Eurocode Tuning's in house product development team, our Rotamass Lightweight Crank Pulley was engineered from scratch. The first step was to create a digital 3D model of the factory pulley to ensure that both the gearing for the attachment to the engine's crankshaft as well as the pulley's grooves for the ribbed belt were an exact match. We then calculated the speed of the accessories that the pulley drives and reduced the diameter of the pulley to slightly under drive them, with an output that still is within tolerances. We chose 6061-T6 billet aluminum to machine the pulley and built it to Aerospace standards for precision, quality and accuracy.
Manufacturing
Our Rotamass Lightweight Crank Pulley is manufactured in Southern California to our specifications utilizing United States sourced 6061-T6 billet Aluminum. Special tooling was created to match the grooves to the factory pulley identically and a total of four operations were performed to machine the pulley. The first two operations we performed on an Okuma Cadet CNC Lathe with final two operations being performed on a Hass Automation MINIMILL. The net result is a product that is concentric to .002 of an inch! The pulleys were then tumble de-burred and coated with MIL-A-8625 Type III Hard Anodize Electroplating. Laser engraving finishes the product with our part number, branding and batch number.
Testing
36 months, over 50,000 miles and multiple vehicles have been used to test our crank pulley under multiple seasons and driving conditions. There is a common misconception that the factory crank pulley is a harmonic balancer which is not the case. The Volkswagen/Audi TSI engine's rotating section is fully balanced from the factory prior to the accessory drive pulley being installed. Since our Rotamass Lightweight Crank Pulley is precision balanced by both design and manufacturing, it performs nearly identical to the factory part it replaces. With our test engine, we removed the crankshaft prior to the installation of the pulley, measured the bearings and crankshaft journals. During all of our testing there was absolutely zero signs of abnormal engine wear.
Performance
Numbers always count! The Rotamass Lightweight Crank Pulley provides dyno proven performance gains of up to 9 horsepower. Turbo spool time is greatly decreased and there is increase in acceleration that you can truly feel.
Value
Our goal is to provide the best value for our consumers and design parts that are easy to install by the average Joe. Because the factory part needs a special tool to remove it which is very large and expensive, we decided to build our own that can be included with every purchase. The tool we designed can be used with a standard ½ inch drive breaker bar as to create the leverage necessary to both remove the factory pulley and install our Rotamass Lightweight Crank Pulley. Since most do it yourselfers do not own two ½ drive breaker bars, we also threaded our installation tool with ½ in NPT threads allowing the customer to obtain a 36” piece of black pipe from their local hardware store if they so desire. This attention to detail also has reduced the size of the products packaging to a mere 10” by 5” by 3” and just under 5 pounds which will substantially reduce the shipping costs.
Application
Fits most VW , Audi, Seat and Skoda 1.8L and 2.0L TSI Engines built from 2008 through 2013. Direct replacement for OEM part number 06H-105-243-K. Please do not hesitate to contact us if you have any questions about compatibility with your vehicle.
Installation
Comprehensive installation guide can be found here
Additional Images
Dynographs
Customer Reviews
The CAR:
I have a 2012 A4 quattro 8 spd auto with about 5K miles. I do not have any mods to the engine yet so this is my first foray in getting mow paawwaaaa! (or for this case, unleashing more power.)
The PART:
I already have the EC AluKreuz installed in the car for a while now, so I am expecting the new part to have the same attention to detail and quality. I was not disappointed. I chose the black hard anodized instead of the red one just to give it more stealth from the dealers. The part looks masterfully crafted, void of any machining defects, dings or scratches. The finish and laser etching are top notch as well.
The Rotamass has a smaller diameter and is considerably lighter at 11 oz (0.7 lbs) compared to 4.0 lbs of the OEM part, eliminating 3.3 lbs of rotating mass. The smaller diameter of the Rotamass under-drives the power steering, alternator and AC which further reduces the load on the engine.
The kit contains pulley, removal tool, bolt and belt – everything you need to get it installed. I do have to mention that even with the removal tool, EC’s attention to detail shows. It is cleverly designed and surprisingly, well finished.
The INSTALL:
I am not a stranger to EC’s services, having my suspension parts and the first oil change done by them. Going with them for the install of the pulley is a no brainer. Its always a treat to visit Eurocode. They’re always working on a project and my time there goes by fast.
There is nothing else to say about their techs, they know how to work on VAG cars and they do it the right way. EC’s techs took a little less than an hour and with everything buttoned up, everything still looks OEM. As with the AluKreuz though, its too bad I can not see the blingy pulley as much when I pop the hood.
The DRIVE:
On idle, I did not perceive any new noises or vibrations. But Surprisingly, as soon as I stepped on the gas, I can feel the difference. It revs more freely, it pulls harder, and there is less turbo lag. The acceleration from 1st and 2nd gears is so addicting that I kept doing it after every green light. Accelerating from partial throttle was also smoother because of the immediate turbo spool. There used to be some waiting time for the turbo to kick in, but its more seamless now.
As for the components affected by the new pulley, there are no charging problems so far and the AC and power steering seems to work normally.
I went on a 1400 mile road trip to Arizona with the family and I did not encounter any problems driving through high 90 deg temps fully loaded and with the AC on. It drove smoothly and quietly as usual. Early morning engine starts at sub 40 temps were also uneventful.
Where I found something different though is in passing. Accelerating from 60 to 80 has a bit more urgency. Even surging to 100 seems less cumbersome. I did not expect such a difference in character especially since the car was packed.
The VERDICT:
I was honestly a bit skeptical if I was actually going to feel any improvements with the Rotamass, but I did. It’s a quality part that has improved the drivability of my A4. It has indeed taken the driving experience a couple of notches up the fun scale. Now, if only my warranty will run out already so I can get the APR stage I done.
Eurocode Rotamass Pulley and Intercooler Hose kit
Last night, having received the package from Eurocode, I went ahead and had the Pulley and Hoses installed. My initial impressions opening the box was that, as usual, the quality of the EC products was outstanding. I really do appreciate the time and effort EC seem to be investing in their products. I will tell you, as others have mentioned - the difference in the size and weight between the old pulley and EC pulley is unbelievable. I new it would be lighter, but the difference is crazy.
The install of the hoses was very straight forward, and on the ramp, probably took all of 20 minutes. I got these more because they were on sale at a reasonable price point, and frankly, I like EC goodies - I was not expecting any noticeable gains per se.
The Rotamass pulley took a little longer to install - maybe 40 mins - with two things being the biggest challenge. Firstly, access to the pulley is tight. We ended up unscrewing the Fan control unit to get the sockets up there comfortably. We also noticed that for my car at least, top dead center was very faintly marked. My mechanic (Audi Master Tech who does all my work) called out that it was definitely different to previous year B8's.
So with the new belt on, hoses tight and everything back together, I've put about 100 miles on the car. I will say that if you are looking for a night and day difference, this isn't going to be it. However, I do notice a little more responsiveness from the throttle pedal, very early in the rev range. The car just has a little more "pep" about it. The pedal almost feels lighter if that makes sense.
Anyway, the bottom line - worthwhile investment? Both the items were to me - but then I appreciate EC's build quality, business ethics and passion, and for every small incremental gain I'm collecting, I feel it's money well spent.
I don't have a catalog of pictures (there are photos of the pipes and Pulley all over the forum) but for the sake of it, here's one whilst the car was under surgery.
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