4B11 Engine Specs and Info - Canadian Hyundai Genesis Coupe and Sedan Forum and Marketplace

Alchemist · 02-06-2009, 03:23 PM

This is a thread dedicated to 4B11 Internals. I'll be adding info to my first post as we go along.

First of all, we don't know for sure that 2.0RS Theta is the same motor as the 4B11T. Some forums say that it's the same, some say it's different. However, here are some good articles for EVO X 4B11 just in case you need some bed-time reading materials.

Tomei Technical Report - Mivec - Turbo Magazine
Tomei Technical Report - Garage Tech - Turbo Magazine

sebas007 · 02-10-2009, 12:25 PM

So there is a chance it share the exact same internals ?? I've heard they use just the same block.

JoeyW · 02-10-2009, 02:05 PM

Quote:

Originally Posted by sebas007

So there is a chance it share the exact same internals ?? I've heard they use just the same block.

Confirmed with different internals

Alchemist · 02-10-2009, 07:02 PM

Quote:

Originally Posted by JoeyW

Confirmed with different internals

Really?! Every board says different stuff, I don't know what to believe anymore. I'll modify my original post though until it's 100% sure.

Joey, can you link to a page where it's confirmed please?

M3Drvr · 02-10-2009, 07:33 PM

Guys from Cosworth confirmed that cams are the same in 4B11 and Theta:

Quote:

With your pictures send to Korea, our engineer and tech dept. have confirmed its identical as 2.0 turbo Theta for those cams.
If you can't believe, you can buy engine from me (posted other thread) to confirm yourself.

2.0 or 3.8 engine, tranny, harnesses, ecu to run engine dyno.

Price seems to be very good for cams. I have their Cosworth pistons for Z and some extra spare parts with me...high comp, low comp, standard comp pistons, con rods, fuel rail but hard to sell due to high cost.

One of my buyer in Korea was Cosworth distributor, but they quit due to slow part delivery for carbon plenum for Z cars. There is no Subaru, no S2000, no Lan Evo in Korea except for some grey import cars, so Cosworth parts weren't that popular or known.

With newer parts develop for Hyundai by Cosworth, I am sure they want to regain distributorship.

Sabbasaun
**Admin**

LINK HERE

Tincap · 03-10-2009, 12:21 AM

Article of interest regarding the 2.0T

GenesisDriven Beyond Redline Disassembles 2.0T Motor With Pictures

BG

Alchemist · 03-10-2009, 08:26 AM

Okay... this makes sense

To make it easier for everyone (pictures have been posted here a while back):

Quote:

Update 20090309: It seems we got some details wrong. Pointed out by JGP at the AutoBlog comments, and according to this article on Wikipedia, Hyundai was the company that did the initial design on the engine, who then provided the engine to Mitsubishi, who then modified the engine to their specs. Euclid at NASIOC also mentioned that the 4B11 is a Mitsubishi designation, and that the only thing these blocks share are a common base design. As stated before, Hyundai did the initial engine design, which they then shared with Mitsubishi. Mitsubishi then modified their design to work in their cars, it it should be that the new Evo X 4B11T and the Ralliart 4B11 are based on the Hyundai\Chrysler\Mitsubishi World Engine design. It is NOT a 4B11, it is simply related to the 4B11. Sorry, and thanks to those who tipped us!

Beyond Redline has taken apart the 2.0T motor used in the Genesis Coupe with some nice pictures. As expected, the block is sourced from the 4B11, the motor used in the new Lancer Ralliart (not to be confused with the 4B11T used in the Lancer Evolution X). [EDIT: Please read the update above, this engine, while related to the 4B11 is not the same block]. It looks like it has a beefy crank and stout rods with a 86mm\86mm stroke and bore, making it a square motor which is great for high revving madness. Beyond Redline expects 400whp at around 8000 RPM an easy goal with supporting mods but an otherwise stock block. With piston oil squirters it also looks like it will be very tunable to produce plenty of power. One disappointment is that it is an open deck block. High boost can possibly warp the cylinders into ovals, so for high power applications the block may need some reinforcement called block guards to reinforce the cylinder walls. The tradeoff is better engine cooling and the possibility to tune the engine more aggressively with less boost to make more power. Compare this to the 4B11T, which has a semi-closed deck with supports all around the cylinder. More pictures after the jump, or click here to see the thread on GenCoupe with all the details.

Hi guys. The insides of this motor look pretty promising. Other than the rods and pistons, the rest looks decently strong. I do have to sonic test the walls, and may go so far as to machine out a sleeve just to see what type and how thick of material was used. Either way being that it is a factory turbo motor, it has to be stronger than a honda block. In stock form I would expect that this wouuld hold around 400 whp, but only time will tell.

Marcatos · 03-13-2009, 01:21 PM

Posted on genesisforums:

Quote:

Last week at XS, Gary from Design Craft stopped by in a blue decked out Genesis 2.0L turbo. He already had it decked out with wheels, Stoptech brakes front and rear, custom Apexi coilovers, Turbonetics turbo, intercooler, Sparco seats, Design Craft custom roll cage, etc. It turns out its a 0-60 Magazine project car so look out for a future issue of 0-60 for details on the car (bitchin mag btw).

I have read here and there where people are claiming that the Mitsubishi and Hyundai versions of the 4B engines are nearly the same. So to clarify, here are some factual things I’ve learned from talking to Gary at Design Craft (who would probably be the leading Hyundai 4B11T expert at this point in time), Simon at Hyundai (who is a Hyundai test engineer and probably knows the most about the Genesis Coupe at this point in time), and Mo at Mitsubishi (who just knows a lot about both versions of the 4B11T and a certified car nut himself) about the Hyundai Genesis Coupe and it’s engines:

1. The Hyundai 4B11T is not the same as the Mitsubishi EVO X 4B11T. While the Hyundai 4B is similar in many ways, there are very few common parts. The block, head, pistons, rods, crank, etc. are all similar, but different. Different in that they are lower grade. Hyundai’s rods are powder sintered whereas Mitsubishi’s are forged. Mitsubishi’s pistons are made by Mahle and have a oil reservoir underneath the dish like a Porsche turbo piston. Hyundai’s cast piston is no different in strength compared to one of their passenger cars. Hyundai’s 4B block has far less webbing (this is visible from the exterior). The differences go on and on. That doesn’t mean the Hyundai parts suck. It’s just that the Mitsubishi 4B11T is way better out of the box. While the parts are different, that doesn’t mean that the Mitsubishi pistons, rods, and crank cannot fit into a Hyundai 4B.

2. The cylinder head is different enough that the exhaust manifold and intake manifold flanges and gaskets are not common. They are absolutely different so there will be no manifold and turbo swapping. This is an absolute fact since Gary tried fitting the manifolds from an EVO X. The Mitsu engine is mounted transverse and it is very likely that the castings wouldn’t work anyway. That’s too bad since the Cosworth EVO X 4B11T CNC ported big valve cylinder head will be available to the public soon. See #6 below on the cams.

3. The LSD in the sports version is a gear type LSD and not a clutch type.

4. There is an orifice in the clutch’s hydraulic plumbing that needs to be removed for performance purposes (as do many other cars).

5. The Hyundai V-6 is very similar in design to the Nissan VQ35. If you’re going to make a new V6, you’d be a fool not to copy, oh sorry uh….model your new engine after the VQ35 since it is the best damn V6 in production right now.

6. While the cams are SIMILAR in appearance, they may not be identical like the GenesisDriven blog states. The blog post states that their Korean source says, “With your pictures send to Korea, our engineer and tech dept. have confirmed its identical as 2.0 turbo Theta for those cams.” I’m not sure what kind of engineer looks at a picture on a computer screen, makes a foolish assumption, and says, “Yep, those are identical.” I don’t think I want that engineer designing my parts. Regardless, the Hyundai and Mitsu 4B11T camshafts need to be precisely measured before saying that they are “identical”. I sure hope they’re the same because Cosworth already offers the best damn EVO X cams that money can buy.

Overall Gary is pretty impressed with the car. He loves how easy it is to work on and said, “Dude, working on this car reminds me of the Honda days.” At 15psi of boost with the larger Turbonetics turbo, it definitely has way more balls than a stock car did. He was going to dyno at XS sometime during this week so I don’t know how much power it made yet. He’s also taken it to the Streets of Willow @ Willow Springs Raceway and said how he was quite impressed with the car (and his own work to the car) even considering how heavy the Genesis coupe was. “The LSD certainly helps with the drifting.”, he said with a big ass smile.

02-06-2009, 03:23 PM	#1 (permalink)
Alchemist Administrator Join Date: Oct 2008 Location: Toronto Posts: 546	4B11 Engine Specs and Info This is a thread dedicated to 4B11 Internals. I'll be adding info to my first post as we go along. First of all, we don't know for sure that 2.0RS Theta is the same motor as the 4B11T. Some forums say that it's the same, some say it's different. However, here are some good articles for EVO X 4B11 just in case you need some bed-time reading materials. Tomei Technical Report - Mivec - Turbo Magazine Tomei Technical Report - Garage Tech - Turbo Magazine __________________ www.rwdhyundai.com \| www.genesisaddicts.com - COMING SOON!

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02-10-2009, 12:25 PM	#2 (permalink)
sebas007 Member Join Date: Feb 2009 Posts: 46	So there is a chance it share the exact same internals ?? I've heard they use just the same block.

03-10-2009, 12:21 AM	#6 (permalink)
Tincap Junior Member Join Date: Mar 2009 Posts: 2	Article of interest regarding the 2.0T GenesisDriven Beyond Redline Disassembles 2.0T Motor With Pictures BG