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Lusting for a twin turbo setup, and would like (helpful) ideas

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142K views 1.5K replies 96 participants last post by  Telion  
#1 · (Edited)
First I apologize for the serious teaser and putting up pics of a project without results and dyno's because there are none. And who knows how long it could be before I go any further it could be a year or more! I just love hearing the ideas suggestions, feedback and knowlege you all have to offer. Isn't that a bulk of what we are here for? :) Well as many of you know I am currently underway with the Supercharger setup. It has been a very slow process but is still underway and the manifold for it is now being welded from what I understand.

I could not get over how much I loved Hotlava's tt setup and it overcame me. So I figured at some point in the future I also wanted to do a tt setup and began slowly buying the additional pieces it would take to do so (being that many are the same, such as injectors, fuel pump monitoring gauges and what not). Then last week my car decide to get some garage time (it broke down later found to be a broken axle, Ebay? I think it was tsk tsk). But none the less it was a perfect excuse to play while she was down so I started to look at how I would eventually want my tt to be setup. What better way than to play. It helps kill concepts that look good in your head given the (not so) workable space; a few of my ideas have since died. But long story short this is where I am at so far. Now that my wife knows that it is just a broken axle I only have shipping time to continue playing before having to put her back together again.

A couple quick notes

-No this will not be done/completed for a very very long time.-This is very new to me so I would be the last to ask for suggestions though I love to share ideas.
-Yes the supercharger project is still underway and taking precedence over this.

-No I did not wake up one morning and say I am going to do a Legend Twin turbo setup during breakfast (sorry Hybird, that just kills me lol)
-No I am not going to be using PVC intercooler piping it is just cheaper to hack away at till I figure how I am going to do it when the time comes.
-I have also read up on some articles of Twin vs. Single and each seem to have there advantages from knowlegable members of their respective forums.
-cheap clamps will be replaced with t-clamps.

Ok the book is done here's the pics. (excuse the mess my garage is at war)
also please forgive the ugly "stand in" mesh and terrible paint, looks will come last. I don't want to tear it up after doing body work and paint.
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This one concerns me, there is not much rook and there is a damn brake fluid line that may need to be relocated. wires and hoses I don't mind moving brake, AC, and power steering lines I am not so happy/experinced with.
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Hopefully at some point I will be done destroying my car and be able to build it up like the one in my head lol.

-Tip- If you get a new intercooler or radiator, cover the fins with cardboard until it is fully installed so you don't damage the fins during installation :hide:

PS. The purple finish and and nice shiney engine bay will be back in time. it was too hard to maintain and not scratch to hell while getting a bug of some sort and doing stuff like ^ this. I think eventually I will powdercoat vs. paint though.
 
#1,288 ·
Why don't you replace the knock sensor, get the it running, tune it, and enjoy it for a little while. At this rate you're going to keep changing stuff and never get to see the potential of your build. Stop worrying about little tweaks and just get it running correctly and tuned. Once you have gotten your fill and feel the car is reaching its max potential, then move on to more tweaks and mods to make more power.

This wasn't meant to be a super-fast car right? So enjoy it right now and move up later. You're going to risk burning yourself out mentally, physically, and financially if you don't take my advice.
 
G
#1,289 ·
Just skimming this thread.

I must agree with ^. Telion don't pressure yourself with getting this and that done. Honestly try it out and see how it takes with each step. Yes it takes more time but in the long run you might save yourself alot of hassle (and money, maybe). Honestly up until the last month my build was still going on (about 16months IIRC) It hasn't become "perfect" yet but it is making much better progress now.

At some point your going to pull the engine out alot testing if this will work or if it won't and some days you will say yes I need a flux capacitor and other days you will say why would I need that.

Just saying from a outsiders view, take your time man its not a race(unless you need this car to drive daily, then it is ha). Take this as advice, tossing a laundry list of mods on a engine at once, then something isn't working right. You have a laundry list of things to go through and test verses just a handful. I will admit that was my first engine mistake(blown to bits) I just added everything at once and added boost thinking "it should work" wrong. I had my car running as NA off and on for a few months while the kit was fabricated and to work out the kinks of the engine swap as a whole. Once it was done it was full force to the finish.

I just don't want to see a DIY build end up a headache because they only focused on the finish verses the details.

PS I hope I hit some form of a topic

PPS I still like your build and want to see it completed
 
#1,290 ·
Lol thanks guys, and I understand what you mean by doing too much at once but fact is I am a seriously driven individual and it drives me nuts to look back and say you should have done this, you should have done that. It wasn't meant to be a really fast build till I got the turbos rebuilt but since then it has been I want low 11's. and I don't want to have to keep pulling the engine apart so do it while it is apart. and though I can't prove it yet I already deem the build a success because I and a couple others have felt its power even before it is done and she kicks ass :D!
 
#1,302 ·
It wasn't meant to be a really fast build till I got the turbos rebuilt but since then it has been I want low 11's.
Whoa, this caught my eyes. Very simply it's not that it cant be done and I want you to prove me wrong, but low 11's is extremely farfetched. I don't know you as one who has a lot of drag race experience.
You need a lot of ponies or a lot of traction and weightlessness to achieve 11's in a Legend. Twin turbos especially those small ones aren't going to cut it. Big twins or a big single is the way to go if you want to drag. I would make your goal closer to mid to high 12's than anything else.

Many don't realize how much power, weight and traction plays in running a 1/4 mile. In a Legend it's all working against you. FWD traction, heavy car, not enough whp. The phantom grips good but not strong enough for what its going to take to run 11's. You can strip the car but that only helps a few /10ths. Also I don't see enough usable power in your power band based on this thread for anything faster than a mid 12.

The fastest guy here has run a 12.9 officially with nitrous. A couple others have claimed mid 12's with no proof... there's a reason; its way expensive and talk is cheap..

FYI 11.49 and below requires a cage.

I mean no disrespect, just calling it as I know it. I hope you get her back up and running soon and enjoy it.
 
#1,292 ·
I think that's his overall goal
 
#1,296 ·
Wednesday works great! You did write in blue Thursday?
 
#1,298 ·
Send them out today priority mail . .. Processing will start tomorrow.
 
#1,299 ·
Of course I know he is or I wouldn't have pulled mine out and shipped them within hours of him asking. :). The blue test is usually an indication of sarcasm so I was curious if he was going to have them to me that fast. Hence the irony in your asking then writing the question in blue as if you knew that already lol.
 
#1,301 ·
Ok I should have the heads back tomorrow, the gaskets and cams by Wednesday or Thursday and the car running again by the weekend. In the meantime I am contemplating doing some more work on getting the water injection done.
 
#1,303 ·
Yea telion i agree with blknblu. low 11's are wayyy out of your league with your setup! Mid 13's maybe if your tuned very wel and can drive even better. Your are going to want to go single turbo or big twins as blknblu put it, and possibly fully build motor and obviously awesome engine management to dip into low 11's. Good luck
 
#1,305 ·
im not knockin telion in any way, because he has done what i havent on the legend, and i respect that very much. but i am being realistic on the number he wants to acheive, that is all. Unlike him, i am used to drag racing, and i know how hard it is to do low 11's and what kind of setup it takes, just as blknblu obviously knows.
 
#1,307 ·
hmm interesting, I too respect the idea that you doubt the possibilities of 11's in a legend. low 11's is a very long term goal. High 11's somewhat medium to long term. But after having driven it :D I have no doubt that she will surprise the expectations of many once she hits the track. But the bottom line is the proof is in the pudding and I don't even have a spoon yet. Also remember after deciding to go all in I began to build the turbo setup (less the engine, diff and axles) to support well over 14psi. It's only been just under a year give me some time.

PS link in my sig is fixed :) (for the most part)
 
#1,312 ·
hmm interesting, I too respect the idea that you doubt the possibilities of 11's in a legend. low 11's is a very long term goal. High 11's somewhat medium to long term. But after having driven it :D I have no doubt that she will surprise the expectations of many once she hits the track. But the bottom line is the proof is in the pudding and I don't even have a spoon yet. Also remember after deciding to go all in I began to build the turbo setup (less the engine, diff and axles) to support well over 14psi. It's only been just under a year give me some time.

PS link in my sig is fixed :) (for the most part)
Bro i hope you prove me wrong more than anything. I would love to see a legend hit consistent low to mid 11's. I love our cars, even though my majority of experience is with Honda's lighter weight products. I love my Legend and very much respect and appreciate what your doing for our cars. most people dont even know our cars exist. But you start getting a few turbocharged legends running around that pull on porsches and such, and people will start to take notice, lol. Good luck man and keep pushing the envelope, hope everything goes well and i hope you can reach 11's with your setup :thumbsup:
 
#1,310 ·
^ not sure what you (he) means by that, I am hitting 8 psi right now. It is almost like when they said I couldn't run my car past 7k :). what about .6.5k at 8psi? I can tell you that I know what it feels like, and that 2nd gear is really short in that circumstance.
 
#1,313 · (Edited)
Thanks I appreciate it. And I admit my knowledge is limited and I have never been behind the wheel of a car of an 11 second magnitude but to me that is no reason not to set a really high goal for myself, after it is why my car has what's in it now in the first place. I remember looking back at the times I would pop my hood and question myself as to how I could fit two turbos under it let alone one.
----------------------------------------------
Car weight:3400
Wheel horsepower:400
1/4 Mile elapsed time = 11.887820

Car weight:3400
Wheel horsepower:320
1/4 Mile elapsed time = 12.805766

A 17% driveline loss is assumed for flywheel HP.
1/4 Mile ET Calculator
----------------------------------------------
Now I know these are not accurate but they seem reasonable so I would not say this is too far fetched.
 
#1,314 ·
Wow I've been out of the loop in here for way too long.

I missed so much.

I hate to be that guy, but at the sake of me not having to do tons of reading/searching, can someone give me some cliffs of how and what happened?

I think last time I was reading in here nothing had happened. Now I see twin turbos are in!! First off, awesome job Telion. Secondly, if a quick rundown of how it all worked out and where it's out now, I would love a summary to get me caught up. I hope you don't mind.

Again, awesome job and I commend you for all your effort and time you put into this.
 
#1,315 ·
Ok Turbos are in, ran ok (ok being boosted 8 psi and pulled quite nice) without tuning but still not great, threw CEL, and would pin AFR at 9.6 at point of CEL, pulled heads found out I forgot to hook up the left knock sensor, sold reground cams broke off a few bolts in the heads, took heads to get bolts removed heads getting picked up tomorrow, stock RLL heads going back in. Some doubt setup will break into 11's. I am optimistic. Hope to have it back together by the weekend. :) forgot to mention that I did blow off and run over the lower intake pipe, replacement parts and better couplers on their way.

Oh yeah thank you :angel:
 
#1,325 ·
HAHAHA nice sum up of 89 pages T :) Hey man Midnight drags are on the 15th and the 29th If you wanna hit it up let me know and i might be able to join ya.
 
#1,316 ·
:rofl: The lower intake pipe fell off? Damn dude, gotta tighten your things lol.
 
#1,317 ·
lol, it was tight just not tight enough. it's actually a common thing if they are not T-bolted, so I prefer to say it was blown off lol, it was pretty funny though I could not stop laughing because I knew it was tightened down and it reinforced my feelings of the turbos working well :).
 
#1,319 ·
The reason 11s would be difficult is FWD launches. If you get your 60 foot low enough, you WILL be able to break into 11s. Its gonna be all about initial traction and launch RPM, i believe that is what they are trying to say. Thats the reason it will be tough anyway. I , for one, think 11s is extremely possible, though low 11s may be pushing it. Even with compression in the 9s you could go higher than 10psi with race gas, so long as you get it o-ringed. I think you could run 12 or even 14psi safely with a proper tune. Ive seen a D series civic with over 9:1 compression manage 20psi for a couple dozen runs. Then it blew a hole in a cylinder.
 
#1,321 ·
I agree.

For a Legend its either going to be an amazing launch (1.7's or lower 60ft) or high WHP(120MPH+ ET)+ at least a 1.9 60ft.

To do either of those you need a butt load of traction and/or 450+whp and decent traction.

Fully expect to be doing 4-6k launches. The drive train must be able to handle it or it just wont happen.

Thats to get into the 11's. 11's are no joke-thats a blazing fast street car; thats what makes the GTR so special.
 
#1,320 ·
I appreciate and certainly respect both of your comments, thank you. I hope that launch control helps with the traction issue, I will try to work through the best place to set it before I get to the track. Also after having driven the car I know there should be enough lag time to assist with this which is different than I even thought. But I am yet to launch it so I guess there is still a bit of an unknown there. Merely being able to run as well as it did at 8 psi I too feel comfortable that she will be fine at 10-14 but as stated I got to work to that, and work it out on a dyno.
 
#1,322 ·
Sounds like this summer will be a great time to do a group buy on axles I will look into it :)