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Archive: May 2008
Subaru EJ Dry Sump
Posted by Eric Hsu on Friday, May 30, 2008The engineering department is hard at work finishing up the final prototype pieces of the Subaru EJ20/25 dry sump system. Many of our EJ25 engine customers are now winning in the various classes of Time Attacks and club racing events so we thought the next logical step would be a dry sump oil system. The EJ engine suffers tremendously from oil starvation due to high G turns and will pump out a significant amount of engine oil through the valve covers due to crankcase pressure (oil starvation + low oil level = disaster). While the Cosworth oil pan, oil control baffle, and high volume/high pressure oil pumps make great strides in oil control with a wet sump system, the absolute fastest cars at the track with sticky tires really should be using a dry sump oiling system for ultimate reliability.
A dry sump oil system not only eliminates oil starvation, but also produces a vacuum in the crankcase so that excessive crankcase pressure no longer becomes an issue. Also, there are small horsepower gains from vacuum being present in the crankcase since the laws of aerodynamics do not apply in a vacuum.
The Cosworth dry sump system is still in the prototype stage and will still go through several stages of testing. For this reason, there are no details regarding what the system will include or it's exact cost. Please wait until the end of summer before bombarding us with questions we have no answers for at the moment. I just wanted to share one of the more interesting things going on here in the building.
Here are the prototype parts fitted to an EJ25. The belt drive is designed to work with the factory dampener, but should also work with many aftermarket dampeners/pulleys with minimal hassle. The billet pump bracket is extremely strong and is designed to keep pump alignment perfect under any circumstance.
The pan will be machined from solid by CNC. This piece is still in the prototyping stage, but should be done soon. The best apart about product development is validation. I think I'll be offering my test driving services at the track!
A dry sump oil system not only eliminates oil starvation, but also produces a vacuum in the crankcase so that excessive crankcase pressure no longer becomes an issue. Also, there are small horsepower gains from vacuum being present in the crankcase since the laws of aerodynamics do not apply in a vacuum.
The Cosworth dry sump system is still in the prototype stage and will still go through several stages of testing. For this reason, there are no details regarding what the system will include or it's exact cost. Please wait until the end of summer before bombarding us with questions we have no answers for at the moment. I just wanted to share one of the more interesting things going on here in the building.
Here are the prototype parts fitted to an EJ25. The belt drive is designed to work with the factory dampener, but should also work with many aftermarket dampeners/pulleys with minimal hassle. The billet pump bracket is extremely strong and is designed to keep pump alignment perfect under any circumstance.
The pan will be machined from solid by CNC. This piece is still in the prototyping stage, but should be done soon. The best apart about product development is validation. I think I'll be offering my test driving services at the track!
Castrol Syntec Top Shop Challenge
Posted by Tyler Hara on Friday, May 23, 2008We are pleased to have been selected by Sport Compact Car Magazine to develop a Nissan VQ35 engine package for the "Castrol Syntec Top Shop Challenge" engine building competition. We will be up against the other Source Interlink Media publications, along with their partner engine builders. See this link for details on the competition:
http://www.syntectopshop.com/Our engine will be a naturally aspirated, stroked, high compression, high revving VQ35 that we intend to wring every bit of 400hp out of. Based on preliminary testing with a stock displacement, lower compression VQ35 development engine (check out the cam testing video in an earlier blog post), that may be a very conservative target! The best part is, the parts developed for this engine will eventually make their way to production, allowing any Nissan 350Z or Infiniti G35 owner to build an identical beast of their own.
The Sport Compact Car Magazine video crew came through the shop for a tour and an introduction. Here's a bit of who we are and what we're all about here at Cosworth.
http://www.syntectopshop.com/sportcompactcar-engine-videos/index.htmlNow here's where we need your help. There is an online poll going for readers to pick which engine they think will win the competition. We need you to logon and vote for Sport Compact Car magazine. Within just a couple days of the poll going online, a few of the magazines mysteriously ended up with 20,000-30,000 votes each. I know we've all heard the old sayings like "if you're not cheating, you're not trying" and "it's only cheating if you get caught". I'm not directly accusing anyone of cheating, I would never make unfounded accusations! But I will say that it would be pretty lame if someone felt they had to cheat to win a popularity contest... http://www.syntectopshop.com/vote/index.html
Cosworth NC MIata
Posted by Eric Hsu on Wednesday, May 21, 2008The Cosworth NC Miata supercharger is now in the final stages of development. Soon we will be submitting a car to an EPA lab for CARB testing since our goal is to make this supercharger system 50 state legal. I got the chance to drive it around last Thursday and take some notes to refine the engine calibration. I was in boost just about the whole night and I can say that the supercharger system has given the Miata MX-5 a much needed boost in horsepower and torque. It feels like it has a nice broad, flat torque curve from about 2800-6500 rpm.
In its current configuration with a completely stock engine and exhaust, our car is currently making 210hp at the wheels which roughly translates in to 235-240bhp. The stock Miata made only 130hp at the wheels. With an increase of 70hp at the wheels, you can imagine how much quicker the car feels. That's a 53% increase in horsepower!
Please don't pick up the phone and call us just yet. The intercooled supercharger system is NOT available to the public yet. We are aiming for the end of summer as a release date. Calling us now would be a futile effort.
A clean OEM look was our goal from the very beginning. Some of the hoses here are not in their final routing positions as this is a first article installation.
In its current configuration with a completely stock engine and exhaust, our car is currently making 210hp at the wheels which roughly translates in to 235-240bhp. The stock Miata made only 130hp at the wheels. With an increase of 70hp at the wheels, you can imagine how much quicker the car feels. That's a 53% increase in horsepower!
Please don't pick up the phone and call us just yet. The intercooled supercharger system is NOT available to the public yet. We are aiming for the end of summer as a release date. Calling us now would be a futile effort.
A clean OEM look was our goal from the very beginning. Some of the hoses here are not in their final routing positions as this is a first article installation.
Hello
Posted by Eric Hsu on Tuesday, May 20, 2008Hello all. My name is Eric Hsu and I have been with Cosworth for almost two years now. I was hired to manage product development for the Performance Parts department. I work closely with the sales and engineering departments to ensure we supply the highest quality components for high end club racing and time attack vehicles.Our quest to supply the highest quality components and engine assemblies falls right in line with Cosworth's illustrious 50 year history of supplying the highest quality race engines and engineering consulting.
Check back regularly as I will be posting about random Cosworth related subjects. My posts will be mostly about product development, product testing, dyno sessions, component design, tech tips, etc. Whatever I post about, I hope you'll find it interesting. Thanks for reading!
Check back regularly as I will be posting about random Cosworth related subjects. My posts will be mostly about product development, product testing, dyno sessions, component design, tech tips, etc. Whatever I post about, I hope you'll find it interesting. Thanks for reading!
