I agree with this also. I've been researching this exact topic before I continue with my turbo setup (and waiting for money, but thats another issue) and i've come accross that link that sabre_logos posted. In the case of the RMT, for us maxima guys it would be easiest to keep (if we already have) our 2.5" diameter y/cat-backs and paint/wrap/paint again which if i'm not mistaken, streetz and 95blkmax have done. And thats for the simple fact that our stock peices for everything before the muffler is heavy and restrictive as far as bends go and ~2.5 is whats available in our limited aftermarket. We'd have to go custom for something smaller. And like was stated before, I believe going too small will hinder performance, but then the question is how small is too small.


But either way you go, wraping the feedpipe is probably the easiest way to achieve this.

 

Okay, about how small can you go in the pre-turbo piping on a remote turbo, I have approximately 8 feet of 2" piping before my turbo. As I said in other post, my setup is technically a remote front-mount that's why the long tubing.

I had concerns that the small diameter tubing was going to kill my top end but it is nothing like that. The car pulls hard all the way to 6900 rpm.

Remember, I have a 4.5 liter V8 and the 2" tubing is not restrictive at 6 psi, which on my application is approx. 420 hp. When your car starts to fall on its face at high rpms and you're sure that it is not because of a too small turbine a/r, then I would say its time to step up to 2 1/4" tubing.

Here's a vid of a 0-100 pull at 6 psi.

http://www.youtube.com/watch?v=3_Kz9fgQyzw

 

Not to reign on your very informative conversation going on, but is there any chance a mod / admin, or even yourselves can move this discussion to a separate thread.

 

I'm sorry if you feel I'm hijacking your thread, that wasn't my intention. A separate thread is a good idea but I can't start it because of my newbie status. Maybe someone can start an appropriate thread for the info that was posted off topic. Thanks.

 

Not so much hijacking, but the information is good, and to have it trapped in a build thread is not so much of a good idea.

 

Not many updates as of late, still waiting on my first paycheck from my new job...

Gotta pay off my 300zx (this coming paycheck)...

middle of next month i am getting the welding / bends made for my y-pipe extension to the turbo. I am thinking of sending both my emanage and my turbo of to their respective manufacturers due to my emanage seeming to hick-up and my turbo having a little shaft play. Once those are back I will work on sourcing the very few remaining parts for my turbo setup, and smooth sailing from there...

 

+1 Tom...... on a t-28 3 inch in ( instead of a 2.5 inch) and 3inch out on a VQ30 worked great for me, I saw more power that way. But the higher pressure on the compressor side, and the lower pressure on the exhaust side due to higher flow works more efficiently with the t3/t04 set up. IMPO

 

any updates?

 

Just got paid today... picking up my 300zx tomorrow, putting a trans in it tomorrow... money for fluids... and I broke my left axle on my maxima... sorta put a little behind... waiting for a few more paychecks to get custom exhaust work done.

 

doesnt that suck when you have plans and something like that happens? Seems to ALWAYS happen like the day or night before you plan to buy something. At least me

 

update??

 

hey merlyn whats goin on with this project? i was jus curious and searched for turbo 3.5 came up with a few and saw that you were building your setup currently. hows it goin so far?

 

I had been putting it off for a while there due to another broken axle and the purchase of my 300zx. The 300zx is almost street ready, once that is done, I will be getting my axle sent off to raxle for a rebuild and then from there I have to get my Maxima plates unsuspended (damn emissions), and then once that is done :-P I will bring the car into the shop, have the y-pipe extension made for the turbo, and from there it comes to routing piping for the Intercooler, running lines for the oil supply / return. I still plan to do the build, I for some reason keep putting it off...

My motivation right now are the people who don't think it can be done...

Simply put I plan to pick the project back up, once the z is on the road and ready to go (shouldn't be more then 2 weeks) I will probably get the axle sent off, get my o2 sims get my car through emissions and then get the piping made, once the turbo is mounted and I feel it is secure I will move onto the lines that need to be made and get the car running...

 

its interesting about rmt turbo and midmount. sorry i didnt read the other posts but where are you mounting your turbo? this jus sparks curiousity in my mind about building a turbo setup. ehhh... so addictive and expensive. my car is 15k away from 100k - what should i do now... man i want some boost. goodluck with the fixes

 

Sorta gives you an idea of where it will be

 

looks like it goin where the cat would be. will you be running a cat at all? or jus sims to pass md emissions? hows aam anyhow. you been there for a while now. any word on reflash?

 

Going to try to run o2's and see if it throws a CEL... I know the rear o2's are only checking for a difference in the A/F and with an open wastegate I want to see if the car itself can pass without the sim aid, from there if that does not work then yes, I will get the o2 sims (already have one). AAM is doing well, we are still in the works to get the 5.5 and 6th gen reflashes, at this moment however we don't have them. Been working on our G37 TT Kit and 350z TT Kit so been a little busy around here...

And yes, the turbo is going near the cat, a little closer towards the y-pipe.

If you look Here you will see where the flex-pipe for the y-pipe is, and how it shoots to the pass side before the flex, it is going to continue left a fwe inches then sweep to right and mount to the turbo at an upward angle, the turbo is going to be mounted solid to the body with a flex section before and after the turbo, from there we will have rubber hangers to give the turbo some form of play, but I don't want the exhaust to effect the movement of the turbo.

We are also planning on moving the under body brace from the center of the car to under the turbo, spacing it out with... spacers and have it sit under the turbo so that bottoming out won't hit the turbo... none the less.. that is the simple plan.

You can see where the exhaust tunnel starts... the turbo exhaust side will be in that tunnel, but the intake side will not be in the tunnel. Within the cat area we are going to have a a small "test" pipe to convert the 3" 4 bolt turbo side to the 2 bolt 3" exhaust side so I won't have to hack the stock exhaust up...

I want to make it so during the winter, or during a turbo failure or whatever it might be... I want to be able to remove the entire setup and put the stock setup back... I will have to make a test pipe in place of the y-section as I am hacking that up... but I dont want to cut the 3" Prototype exhaust at all... I might even buy a new cattman y-pipe just incase someday I want to swap back.

 

i hear ya. i was thinkin the same thing about where it should go and wat if you do want to take it at some point. this is pretty exciting stuff. i feel you onthe hacking of the pipes.. makes me feel uneasy seeing a quality piece get hacked to pieces haha. you reply too fast also haha

 

Ya, I like the idea for a couple reasons, the main is because it is different...

I personally don't like having a bunch of unneeded things, such as piping running all the way up the length of the cars from back to front for IC Piping... and I want it to be stealth... I don't want a turbo to sit at my muffler... but yea, it is also unique in a sense... still remote mount, but something different, something that no one has really tried... and just imagine... a turbo spinning right below your ***... god that has got to sound amazing... vs all the way behind you... I can't wait :-P

 

oh man... makin me wanna do this. i jus reread your post. i was thinkin (i have a wsp ypipe) cut the y at a point and make a flange there. make a test pipe or use the cut off part and make a flange there so if you ever wanted to run stock you vcan jus put the testpipe back in place of the turbo. so that it would be somewhat bolt on. so your hot side wouldnt need to change from 4 bolt to 2 but a test pipe w/flex and one side 4 and the other 2 or wat ever flange would go there. i dono if that is what your doing. which way is your IC piping going?

 

The IC Piping is going to route under the driver seat (obviously under the car) and route up for a side mount intercooler under the battery tray. Then the piping will route from the IC up through the fender well (like the True CAI on the 5th Gen) and into the TB.

From the outside you won't know the car is turbo... Right now my intercooler is not the best, but I plan to pick up a true side mount intercooler such as this.



but for now I am using a small v-style intercooler...

 

whats wrong with the vstyle? looks much more efficient than the z32/sr20 type side mount. yeah i dono how i feel about a total fmic unless its blacked out and not blocking the rad too much.

 

The main "problem" is not a problem till I try the v-style, but if it will get any air to pass by it... because I plan to mount it in such a way that air will pass by it but not through it, I might make some type of bracket, or use spacers to have it mounted at an angle to allow air to pass through, again not sure at the moment, just figured down the road I might go with side mount as opposed to a side mounted front mount

 

ah yes understood. forgot that was made for front mount. how much is this whole thing setting you back so far?

 

A lot

Um... well the project was originally a $1500 project

However I ended up getting a lot of good things versus going with the cheaper equivalent

Turbo - Turbonetics 62-1 $750~
Intercooler - $250~
Emanage Ultimate - $500~
Emanage Ultimate Harness - $100~
Turbosmart Eboost - $250~
Turbosmart Wastegate $250~
3" Cattman Prototype Exhaust - $350~ (Shipping of my old 2.5" to Cali)
Walbro 255 lbh Fuel Pump - $60
LM1 Wideband - $289

Still have to purchase...

Oil Pump, Piping, Our welders Time, Oil Lines, Gaskets, Flanges, MISC ****, IC Piping.

so, so far... $2799 roughly...

 

what the prototype exhaust from cattman? yeah def better to get the quality stuff versus the junk stuff. play it smart. shortyblu95 is sellin his kit minus turbo for like 600. comes with filter sandwich. lines. and all that - hopefully all those little things wont be too much. wats your welders time anyways? are you running stock headers or aftermarket?

 

exacly why my kit is one hell of a deal, im looking to sell it and i also paid a $hitload for it all but i had some stuff come up and am selling it for like half what i paid and its all new! ..(sorry for the "advertisment" in your thread saw my name so i figured id reply)

 

Its fine, if I had money I wouldn't mind picking it up, however right now I dont have the money.

Cattman made a 3" exhaust for the 5.5's for HNDA E8TR hoping it would sell but it didn't, HNDA E8TR sold his car and wanted to go as close to stock as possible so I traded him my 2.5" cattman for his 3" prototype... I have cattman headers as well...

 

That's HNDA ETR, btw.

 

speakin of hnda etr im tryin to find pics of his turbo setup before he sold the car. he had a low mounted turbo didnt he? like hangin from the transmission? tryin to think of different ways to mount a turbo where the tunnel begins... jus dreamin here

 

The only ways I can think of is...

1. Route a reverse y up the back or front of the trans, mount turbo and exhaust down the other side

2. Mid mount setup

3. Rear mount setup

Aside from that you can do variations of them all, remove battery tray / move battery to back and mount the turbo lower, mount turbo under the battery tray, mount turbo behind the transmission, tt setup :-P...

I figured my way was the easier in regards to piping and easy to remove.

 

yeah i like your setup. i was drawing different ways to set the turbo by the tunnel. i dont think anyone has done a turbo with precats and stock headers. and if they did its probably restrictive. i hate the fact that if i ever did this i would have to get rid of my ypipe, get headers and hack the pipes to make a hotside for the turbo. ahh..

 

You don't "have" to do anything... if you get a small enough turbo you could mount it further back, not sure if you remember the picture but...

I am not saying that I am, but from the setups I have seen, this will be the biggest turbo I have seen on a maxima, a few people are close with 60-1 Turbonetics, but have I have not seen a 62-1 on a Maxima.

The simple fact for me... I am making 250 WHP / 244 ft-lbs, my car runs high 13s... I want to run low 13's / 12's and want to have something that no one else has....

if streetzlegend and everyone else went mid mount instead of rear mount, I would have gone rear mount... technically, the rear mount is "easier" though requires in my opinion a bit more work in regards to oil (as I don't know of a pump that will effectly work at that distance, though I have not searched). However, much easier to remove if they don't want it... My setup is based on the following

1. Stealth / Sleeper... The closest mod I have to visual is tint / clear corners... I want to keep it that way

2. Uniqueness... Something that not only Maxima guys have not really done but aside from an xB turbo kit that failed, and I mean the company went under and the kits leaked oil every day... No one has really done....

3. Simplicity... most people will say my turbo is far from simple, but when you break it down... it is rather simple... I am slaping a turbo in line with my exhaust with an open wastegate... the hardest part is running oil / IC piping which won't have to travel down my floor boards

4. Power... Originally the turbo was going to go in the engine bay with the reverse y mentality, then I chose the turbo and said that I did not want to mess with the idea of 1. a FMI nor the idea of getting that turbo to properly fit in that engine bay, especially since I seem to kill my trans atleast once a year and I like to have "easy" access to it for removal

Those are my reasons for choosing the location, but the reverse y works as well... my only dislike with the reverse y is the restriction of airflow... I don't like the idea of taking exhaust gases from the front and rear taking them back a step, pulling a 180 then pushing them back upward into a turbo then down and back again... that is too much for me to do...

Also, I like being different if I didn't already say that... My Dyno #'s were the first really solid evidence that you don't lose power from a 3" exhaust on an NA VQ35 Maxima... you actually gain quite a lot of power... so the end result... I am trying to make my job harder so in the long run people become more educated as to what can be done and understand just because it hasn't been done, doesn't mean you can't do it...

The Maxima Community has very little support from the Performance Industry... sometimes we have to take creativity into our own hands...

 

definitely. im am intrigued by your setup reason being it will be a clean install and very stealth. for me i would want a turbo that spooled quickly but also can make at least 300 whp. im not even sure what turbo would fit that criteria as i would want to run low boost maybe 6 psi or so. rear mount is good but too much piping. reverse y is also good but new ypipe and doin a 180 doesnt sit well with me either. i think your setup will definitely turn heads and get others (as myself) to want to do this.

as far as headers/ypipe go - is it totally necessary to get new ones instead of using stock headers/precats , i guess i feel torn reason being, dishing out 850 on a cattman header then having to cut it up. do you know if anyone has done a turbo setup without having to change those pieces?

 

Not required, recommended to get some type of headers but not required

 

i guess i would be worried about emissions and what not. ima make some sketches on paint of what i think is pretty good setup. your ypipe looks different from mine. im sure what i sketch out will look similar to yours

whats a decent size turbo for quick spool and about 300whp? also what turbo has turbo inlet and comp outlet on the same side? are t3/t4 adjustable to make it in that way?

 

t3/t4 is a pretty broad term but yes most turbo's you can clock aka rotate the housing on the chra so they face anyway you like.

 

All i have to say is....

wrap those headers and ypipe leading all the way to the turbo.

Bolt everything up make sure all is good and no leaks, and once that's done, WRAP everything leading to the turbo. It will make it a completely different car. You want the exh to get into the turbo as hot as possible.

Best of luck with this! (and the Z )

 

i dont know much about turbo sizing and such. i will read more into it, but whats a pretty good size turbo for making at least 300whp, at low boost maybe 5-6psi and good spool im guessin around 3k rpm? i dono is that too high an rpm for spool to pick up?

 

Update:

I just placed an order for my driver side axle from raxles. I should be receiving that on Wednesday and the install of that on that Saturday. I also plan to pick up my o2 heater cores for the o2 sim along with install my Neutral Position Sensor.

All in all, once all that gets installed this weekend, I then plan to take the car to get emissions tested and pay the state $200 or so for me not caring to go to get emissions done. After that, the car is street legal again (atleast by paperwork standard) and I can actually drive it to / from work and get my love back for the car... from there I need to source my parts.. and have my welder throw together my y-pipe extention... So, the ball is rolling and hopefully I won't get pulled over from now till I get to the emissions station.

EDIT:

Just called MVA... and they waived my emissions for 3 months, waived my fees and unsuspended my tags (as of tomorrow)...

I CAN FINALLY DRIVE MAXIMA AGAIN :-D