Live4Redline's Turbo Project: Questions & Thoughts

[Live4Redline]

For awhile now a bunch of friends have been pushing me to do a custom turbo setup. I have a shop with tools and a good group of people who know what there doing. So this is me considering it. There’s a back order waiting list for blowers for the SDS kit and this is the only other option till then. Plus I expect to pay allot less money for my own custom setup. An eBay piping kit with all the toys is $800-$1000 and that will give me all the little shit so i can worry more on the bigger stuff. Plus i can just take my time after the install upgrading everything to something a little more worthy anyways. I'm not saying I’m gona do it but i am starting to look into it.

Got a few questions already! And wanta hear what people think.


Turbo Manifolds... I've looked at allot of pics and was just wandering if anyone knows if the 6G72 has the same bolt pattern as the 6G75? It looks the same but i'm not sure. They don't make allot of manifolds for the 3G Eclipse but they sure do for the 3000GT. So this might be an option pending the size and angle. That and I’ve heard that RRE will make a set on request so i might give them a call about it too. If nothing else i have my stock headers and i can cut them up and weld me up a custom manifold. It pays to know how to weld and such.

Single or Twin... Putting a single turbo on a V6 or V8 has never felt right to me but it can be done. But in order to do it you gona do some crazy looping to mount the turbo after the headers join and then bring the piping back into the engine bay. Its a tight fit down there now and i'm not sure if there’s room for another pipe. But if you go twin you can keep the turbo’s close and just send the exhaust out together in theory. I'd like to do a twin setup but engine bay space my become a factor. So what are your thoughts? If you could just mount the turbo on the front bank header and not on the rear this would be pretty easy. But that would be one fucked up back pressure loop. LOL


So what do you guys think? How would you do it? And what have you discovered in your research. Post away... its not like we have anything better to talk about. LOL

[Jonrod]

I think you can fuckin' do it. you obviously seem like you know what your're doing when it comes to engines, let alone F/I. Just make sure you keep us posted every step of the way, pix, write ups, and such. That will be a substantial asset to this forum.

[lil`Wolf]

I know nothing about the subject but i think a twin turbo eclipse would be sexy :-D

[EclipseFL07]

I am not f/i expert but what about a rear mounted turbo set up? would it work with our 4g?

[Live4Redline]

You could make a rear mount work... but your gona have the same old rear mount issues.... bad turbo lag and a hell of a time running piping back into the engine bay. And theres not much room under the 4G to run it back unless there side by side and thats not good eather. I wanta stay away from the rear mount.

I was thinking mybe a single turbo right before where the cat is normaly. Somthing like that. But even thats gona be a pain to route piping. Thats a cramped area. But we'll figure something out. I'm good about that.

[lil`Wolf]

IDK if this is any helpful but
Info on 4g72
Mitsubishi 6G7 engine - Wikipedia, the free encyclopedia
Info on 4g75
Mitsubishi 6G7 engine - Wikipedia, the free encyclopedia

Sorry if it wasn't

[NotUrAvg4G]

the manifolds will work fine. They fit just fine. Relocate the battery to the trunk.

[Live4Redline]

Originally Posted by NotUrAvg4G

the manifolds will work fine. They fit just fine. Relocate the battery to the trunk.

^ Cool... thats what i thought.



And while doing my research i found this...
Road Race Engineering's 4G Eclipse Parts and Performance

RRE makes and sells every flange, mandrel pipe with pre-bends, hoses, and clamps you could ever need to make a custom kit.

RRE OWNS!

[MarkGuutz]

Twin ftw!!!! Well it'll beat the turbo lag of just a bigger turbo

[Live4Redline]

Alright well I gave Reardrv a call and was talking everything over with him and he’s downing on the idea. He's trying to push me toward the SDS. Damn him!

Because I’m gona have to run a larger turbo to have the system working right and its just gona be too much damn power. Could run a GT3071 or GT3076 but he thinks that once the dam things spools up its gona be too much of a massive shock of power to not blow anything. If I go with something smaller its gona spool to damn quick and the larger turbo is gona have lag and create too much power after spool to keep at the wheels. I'm only trying to run 8psi maybe 10 but he thinks its gona be too much. We had to cut the conversion short but now i'm harder in thought about the idea.

I think i can have the piping and such done rather quickly but stumped on what turbo setup is gona be best so to produce the power i want with out blowing anything up. 450-500whp on 8psi with the least amount of lag as possible is what i would like to see.


My thoughts...
The setup i'm looking at now is gona be a single turbo setup with two manifolds and will bolt into a reverse pipe that heads toward the front of the car with a top mount turbo. Only issue with this is getting the Y-pipe to be even by the time it joins at the turbo. The front bank is gona be right next the turbo so where the hell am i gona send the pipe so that by the time it reaches the turbo its even with the rear bank pipe. Because if there not even then my back flow is gona be fucked to shit (Any idea how much room for play i have here before the pipe length is an issue?).

Then once i have the turbo mounted ill run a 3in down pipe with a new 3in custom exhaust under the center of the motor all the way back. (There goes my new headers and full magnaflow exhaust! )

Intercooler and intake piping is the easy part.

--------------------------------------------------------


This is from a V6 probe, i'm gona use it as an example. The bottom pipe is what i talking about for my "Y-Pipe". The turbo goes on the left mount and then the front bank followed by the rear back. So its more or less coming toward the front of the car instead of the rear. But in this setup you notice a big difference in the length of the piping from the front to the rear banks. This is an e-bay kit so i'm not sure how well this performs but i don't want that. But at the same time if i try to run a longer pipe for the front bank then its gona have a hell of a angle in it and that’s not too good either. Any suggestions or thoughts?

[Live4Redline]

Originally Posted by MarkGuutz

Twin ftw!!!! Well it'll beat the turbo lag of just a bigger turbo

Ya... i gota look a little further into the twin turbo option! Its still a possiblity but i got some more research to do still.

[lil`Wolf]

Not to get off topic but EclipseFL07 what kind of car is that?

[Chaos]

twins would sound awsome "ya its got a TT V6 man" but in all reality there is a reason that most high power supras are single turbo. You got to take into acccount that with such a big motor you should be able to use even somthing like a 35R with Minimal or even no lag and acheive that 8-10 lbs you quest for real quick. Or you could go with a TT and use a smaller turbo like a 16G but would probley expeirance more lag with ony 3cyls spooling each one. But you also got to consider that with a real quick spool forget about traction under i would say third in any street situation. I would avoid the rear mounted turbo and heres why, that adds 8ft of piping,tubing, and lines that are just asking to be smacked around by what ever may be in the road potholes,speedbumps, and general road trash. i know when i had my galant (ihad the 4 cyl but...) the 6G72 factory manifolds could support a turbo with a custom loop pipe after the Y that ran back to the engine bay to the turbo then back out to the exhaust. and like you said not the most flow/spool condusive thing in the would but it gave the 7-8lbs that the 14b's they used could make.

[Live4Redline]

I've been reading the Good Book of the Lord all morning... LOL!

Maximum Boost
By: Corky Bell



Ya... me and the guys where discussing it some more last night... where trying to work out all the details before I jump head first into throwin down any cash, lol.

We talked about fitment, turbo size and running the pipes, and much like you we feel the 35R may be the best route.

I've also ran into another snag and have to do some more research on the 3000GT manifold piping. I've worked on four VR-4's in my time but for the life of me i can't remember what direction the manifolds faced. Its tearin me up inside that i just can't remember! The issue here is that from the pics one of the manifolds is facing upward (see pictures below). The bolt pattern on our motor is the 3 bolts is top and 4 is bottom and with the 3KGT manifolds one of them faces the exhaust port upwards. I can't remember why. Gona look it up here in a min. But it might not be a big issue because i can just cut the "Motor Flange" off and just turn it around and re-weld it. Nothing beats hacking up a new $300 part before it was ever even installed on the car... LOL!

I also tried looking into 3G Eclipse manifolds but no one makes any. You would think a car made back in 2000 would have a turbo manifold by now but I guess people still don't have any love. Someone NEEDS to make the Turbo Hot Side piping for the 3G and 4G cars. Something that will fit both cars would well be worth the investment.

Manifold in question... three bolt holes is the top and notice that the exhaust port is also facing upwards. (also notice that the exhaust flange is different then most. I need to figure this out also, but when i fab the turbo y-pipe ill just get a flange to match it. So its not a big deal.)


The Other Manifold... four bolt holes is bottom and the exhaust port is pointing downward like it should.

[EclipseFL07]

Originally Posted by lil`Wolf

Not to get off topic but EclipseFL07 what kind of car is that?

skyline gt-r r34