Can anyone offer an explanation of reverse mounted turbo engines?
I can see why the evoX will have an aluminum block, but what are the benefits and cons of this new engine setup and putting the turbo against the firewall and using longer pipes. Does it have something to do with the exhaust back pressure or DSG type transmission?

 

Well, from what I can tell you about designing a turbo kit for the RSX the length won't make too much difference. If you think about it, the intake charge pipe already has air in it. When the turbo is at full boost it just forces the already existing air, through the intake pipe and into the throttle body.

Also, in a way air is like water. Let's say we have a tube with a plunger in it. If we push the plunger the air will come out at the same rate that the plunger is being pushed. Unless the tube is preasureized, and it is. Then the air in the tube will accelerate at the rate that the preasure is released from the turbo, combined with the rate of the expansion of the same air, right up to the point of full boost, depending on tempature.(Air, when compressed heats up, and then cools as it expands, which makes me wonder why, from the factory Mitsubishi doesn't make the hot side of the intercooler larger than the cold side by about 1/4 inch?)

1. One reason that having the turbo in the rear is great is that it distributes weight to the middle of the car, causing a better 50/50 weight distribution. You also may be able to place the turbo lower in the engine compartment, and that allows for a lower center of gravity.

2. The other reason is that with the exhaust in the back of the motor the exhaust won't get the oil as hot, since when it's spun 180 degrees the exhaust has to pass underneth the oil pan, which is one of the causes of heat soak in your current motor.

3. With the exhaust in the rear directly correlates to lower underhood temps.

 

Well, my vw gti has the turbo up against the firewall. I guess its so u have more clearence in the front, and also a shorter path for the exhaust. Weight is also affected.

It does make working on the tirbo harder though.

 

Damn, I'm soo glad I checked here before I went down to the show. I would've been so f'ing pissed to go there and not see the Concept X.

Oh well, since that was my only reason for going, I guess I'm not going to the CAS this year afterall...

l8r)

 

I don't want to scare you guys, but I've heard a rumor that Dodge is getting back into the action and wants to breed the EVO with the Neon.

Here is the blurb on allpar.com...

The EVO will have a Dodge version, with extensive Chrysler involvement in engineering in the two door version. The four door will be primarily worked on by Mitsubishi engineers, though members of the Neon ACR team are helping them, thanks to their strong rally and SCCA success. (The Neon traces its pedigree back to the Shelby Dodges, partly through John Fernandez). Mitsubishi has been a strong rally car and their engineers are no slouches. We're not exactly sure, though, why Dodge and MMC have switched places - the Stratus/Sebring/Avenger coupes were pretty pure Mitsubishi.

 

Don't know what to think about the new one. Maybe a bodykit will improve its looks. I did see a different concept though, that I thought was much nicer.

 

Thanks for the info guys, makes sense.

 

I dont know if somebody posted this already, but the aluminum block is going to KILL the tunability of the evo. And if I see one with a paddle shifter I will run it off the road!

 

There seems to be a negative feeling about the new motor in the Evo X, but could it be better? The K20 motor on the RSX is aluminum motor, and racecar engineering magazine calls it an over engineered street motor. The casting seems to be similar with an open deck and water jackets. I've made 550hp already, no sleeves.

 

It absolutely can be better, and stock for stock most likely will be, it's just going to take some time for people to come around. It will also take some time for the tuner market to catch up and I bet it'll be a little more difficult to extract big power out of the new engine without addition upgrades. That's purely speculation, but it's a trend with just about every modern car, ECUs are more intrusive and cars are more highly tuned from the factory.

 

drives: honda.


silly post, of course it can be better

 

I thought the Neon was dead. Why bring back the platform and why would Mitsu willingly help develop a car that would be direct competion to the Evo? Sounds fishy to me.

 

yeah I was there and the eclipse was the center stage and the evo was on the outskirts. they had the ralliart eclipse concept there though.

 

yeah, that's like them improving their customer service based upon the complaints for after sales vehicle support (or lack thereof).

Seriously, aren't there people who are paid to accurately gauge public opinion and use that information to improve the position of the company? They suck at their job.

 

In recent articles they have stated that the american market would go in a differnt market then the rest or the world and i am willing to bet that it means that we will be getting the ralliart eclipse and not the evo X and for all that dont believe me i also posted about a year and half ago about the whole mitsu/dc/hyundai developing the new chassis and no one believed that but it happened ( yeah thats what the new dodge caliper is).......................