Evo X

[Pushit2.0]

I would like to see how strong the motor / clutch / tranny / fuel system / intercooler / etc are compared to what we are used to. So to find the limit we buy one and bolt a GT47 on there and start breaking stuff. Open deck motors ftw.

~John

[JET]

Open deck motors ftw.

~John

It is not an open deck motor, they modified the 4B11 for the turbo, it is now a semi-closed deck. It is also nice to see that a manual X GSR is only 60 lbs heavier than a IX MR.

[scheides]

What does open deck or semi-open deck mean anyways?

[JET]

Open deck means the cylinders have one big coolant passage all the way around the deck and it is not supported. 4g63 is a closed deck, with just the coolant passages open. A semi-closed deck will have supports going from the cylinder to the block, but still fairly open. It should be fine for high HP though from that aspect. That is why the Honda guys put a block guard in, like so:

http://www.honda-performance.com/images/b16-block-guards.jpg


That turns an open deck into a semi closed deck, the 4B11T will come with something like that installed from the factory.

[Shane@DBPerformance]

Just search for pics of STi, Honda, and 4G63 short blocks. The 4G63 has a fully closed deck. Most Honda engines like a GSR(B18C1), D16, NSX, Type-R, later H22s, etc have an open deck block. To make decent power with the Honda engines, you need to sleeve the blocks, which usually involves totally boring out the stock sleeves and replacing them with a supported sleeve or one close to a semi-closed deck. The STi has a semi-closed deck design, which lets them handle some power compared to the WRX that has an open deck design and is a fairly weak motor.

[Shane@DBPerformance]

That is why the Honda guys put a block guard in, like so:

That turns an open deck into a semi closed deck, the 4B11T will come with something like that installed from the factory.

The Honda guys stopped using block guards a while ago. They usually only made things worse, since putting them in distorted the cylinder placement and the sleeves often cracked at the bottom anyways. You can get farther on the stock Honda sleeves than people used to think 5 years ago, but if you want to run big boost reliabily you need to sleeve it or buy a closed deck Dat Honda block.

[scheides]

Thank you for the awesome answers guys!

[TkrPerformance]

pictures from Do-Luck this morning of the Evo 10 that they have in colloboration with ARC.

Parts for the car are already under development by both Do-Luck and ARC and they expect to showcase the car very soon, more than likely at the Tokyo Auto Salon.

Safe to say Do-Luck is continuing its development with Evo's with products expected to be released shortly for the Evo 10, we'll before UK cars arrive even, which is great news.

We can expect to see some Aero parts as well as strengthening , and cooling parts of course such as intercoolers and radiators etc.

http://sumopictures.sumopower.com/5.jpg
http://sumopictures.sumopower.com/4.jpg
http://sumopictures.sumopower.com/3.jpg
http://sumopictures.sumopower.com/2.jpg
http://sumopictures.sumopower.com/1.jpg

Picture of a Ti exhaust in planning
http://image.blog.livedoor.jp/arcinternational/imgs/9/2/9247cfed.JPG

[Pushit2.0]

How do you know that?...

I am not sure, I think the automotive industry will be looking at ways to over engineer cars less and less, that way it costs them less, thats all I am getting at.

~John

[JET]

Rally Evo X

http://www.auto-g.jp/image.html?image=news/200710/05/topics01/04_b.jpg