N54Tech.com - International Turbo Racing Discussion
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aflatau aflatau is offline
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Default My Custom Single PT6466 Build Thread - 08-27-2013, 06:00 PM

Well,

I thought I would start my own custom single turbo build thread. The car(e90 335i) will be going into the shop soon to start the process..

When I first start doing research I had quite a few questions I had for my self that I went out and found the answers to share with you guys:
  • What turbo should I go with?

This was my first issue I needed to over come, I originally wanted todo a custom twin setup - such as GT2832rs but my fabricator said it would be a lot more costly to go that route and a pain in the ass and suggested a single setup.

From there I was concerned about boost lag, I am so use to the powerband of the current OEM twins. So I did some research and found the following turbos:
  • Garret GTX3582r
  • Comp CT4 6465 Billet
  • PT6466

While looking trough all these options I found that the best bang for buck would be the PT6466 for the power goals I want to go with. Problem with this turbo is that it is the most lagy out of the three. But at the end of the day I decided to purchase this option. I purchased the Vband inlet and outlet housings to make a simple install and remove process.
  • Do I run an external or internal wastegate?

I was concerned about which wastegate to run, due to the fact that our OEM system is an internally wastegated setup. I dug around and sent some emails to Terry and found out that an external wastegate is not an issue and to go that route.
  • Upgrade the boost solenoid?

This option here is still up in the air, I was concerned about running the OEM boost solenoid due to the fact that they some times fail in open state to cause over boost. So I decided to shell out and purchase a MAC boost solenoid I got from ebay for less then $40 shipped. This here will be a trial and error process and won't know more till I get to that point in the process.
  • Upgrading the BAR Map Sensor?

Since the OEM Bar Map sensor is only a 2.0 bar, and I plan on running more then 20 PSI on this single turbo, I had to find a suitable Bar map sensor. Luckly
BMS offers a plug and play harness for the N20 3.5 bar map sensor. I purchased the map sensor from ECS Tunning and ordered the harness from BMS.
  • O2 Sensor Placement pre-turbo?

So with going single I have learned that you have to place the O2 sensors before the turbo, when typically you would do post placement. The reason for this is that our OEM ECU reads two separate banks, 1-3 and 4-6 for A/F ratios. If you put the O2 sensors post turbo with a single turbo it mixes the gases and throws off the A/F ratios which will cause a tuning night mare.
  • What fueling am I going to run?

Well since I have an upgrade LPFP with the Walbro Intake option, I will be running a big e85 mix of atleast 70/30 and move up from there if the system can take it. I want to see what I can do with just e85 around. Hoping to reach 25-26 PSI on E85 alone, but at this point its all hopes and dreams.

  • What tuning platform?

Well with the new option of open flashing, I will be running the JB4 G5 with the open flash to tune this project. This is where I will see needing the most help from Terry, I will be making a new thread on this alone about this topic.


Those are the questions of what I could think of now, I am sure during this process I will have more, and have more answers to share with you guys.

The parts I have purchased so far are
  1. Exhuast head flange from RB Turbo
  2. Tial MVR Wastegate
  3. 3.5 Bar N20 Map Sensor
  4. Plug and play harness for bar map sensor from BMS
  5. PT6466 Turbo with Vband housings
  6. MAC Boost Solenoid

Right now I am also currently sourcing up the raw materials for the manifold and etc.

We will be designing a top mount manifold for this turbo, which leads me to ask some questions maybe you guys can help me answer.

Air filter placement, Where do you think the best option is to place the air filter?

What do you think the best placement is for the o2 sensors with out burning them out?

I will update this thread as I go, the car should be going under the knife this weekend if I get all my parts in time.

Please if you have any questions or comments, please feel free to share.
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illrider illrider is offline
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Default 08-27-2013, 06:36 PM

Subscribed! I might be heading the same route as you, however, with the GTX3582R turbo. Any specific reason you didn't go with it?

Which MAC solenoid did you purchase?

Do you think the intank LPFP will be enough? Sounds like at those power levels and that concentration of E85 that the HPFP will start to not be able to keep up as well.
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aflatau aflatau is offline
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Default 08-27-2013, 07:04 PM

Quote:
Originally Posted by illrider
Subscribed! I might be heading the same route as you, however, with the GTX3582R turbo. Any specific reason you didn't go with it?

Which MAC solenoid did you purchase?

Do you think the intank LPFP will be enough? Sounds like at those power levels and that concentration of E85 that the HPFP will start to not be able to keep up as well.
I went with the PT6466 due to a better cost option, and more head room for power.

Not to sure about the intake lpfp, only time will tell at this point.

The MAC solenoid I purchased was this one here:

http://www.ebay.com/itm/231031755026...84.m1497.l2649
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Xearo Xearo is offline
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Default 08-28-2013, 07:51 AM

subscribed as well. interested to hear how this goes.


-'09 135i MT - Custom 6466 ST - 680whp
-'08 135i AT - 6466 ST - dead
-'97 318is - Daily
-'82 320i
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Terry @ BMS's Avatar
Terry @ BMS Terry @ BMS is offline
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Default 08-28-2013, 08:14 AM

Should be fun! For the solenoid you'll use the factory ones configured in this manor: http://www.n54tech.com/forums/showthread.php?t=20406

We don't support the MAC or any other solenoids at this time. The factory units are very high quality.


Burger Motorsports
Home of the Worlds fastest N20s, N54s, N55s, S55s, N63s, and S63s!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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aflatau aflatau is offline
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Default 08-28-2013, 09:30 AM

Quote:
Originally Posted by Terry @ BMS
Should be fun! For the solenoid you'll use the factory ones configured in this manor: http://www.n54tech.com/forums/showthread.php?t=20406

We don't support the MAC or any other solenoids at this time. The factory units are very high quality.
Ok great, thanks for the info.
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aflatau aflatau is offline
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Default 08-28-2013, 07:01 PM

Small update today I received the 3.5 bar map harness from BMS.

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aflatau aflatau is offline
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Default 08-29-2013, 08:18 AM

FedEx was a little nicer today:

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Pitch Black Pitch Black is offline
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Default 08-29-2013, 09:06 AM

My god. That looks beautiful.


Current Ride: Still picking one
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aflatau aflatau is offline
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Default 08-30-2013, 12:58 PM

Today I received;

- Wastegate | Tial MVR 44m
- Head Exhaust Flange from RB Turbo
- Boost Solenoid
- Bar Map sensor

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SeaBee335 SeaBee335 is offline
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Default 08-30-2013, 06:34 PM

Im quite jelous right now! Its going to be an awesome build! Cant wait to see it progress!


'07 335i E92 - FBO
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VegasJD VegasJD is offline
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Default 08-31-2013, 01:07 AM

looks pretty sick...hmm gave me some ideas


2018 Individual Tanzanite Blue Competition M4
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Chronumn Chronumn is offline
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Default 09-01-2013, 09:48 AM

I'm doing this same build haha! I wish you luck. I went with a GTX3576r to keep spool times down. I also will be getting the TiAL MV-R 44mm and have the RBTurbo Flange! I will be starting up a build thread once we get started on the manifold this week hopefully.
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aflatau aflatau is offline
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Default 09-23-2013, 10:38 PM

It's been awhile since I have updated this thread, but I am cross posting from a lot of forms.

Welding of the manifold is just about completed and here are some pics.



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aflatau aflatau is offline
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Default 09-24-2013, 12:54 PM

Manifold is done.

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Rob180bhp Rob180bhp is offline
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Default 09-25-2013, 10:44 AM

looks swasome
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aflatau aflatau is offline
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Default 09-27-2013, 05:42 PM



******** in progress.
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aflatau aflatau is offline
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Default 10-02-2013, 06:09 PM

Alright, o2 bungs and spacers are now in, down pipe is completed. Just have to put her all back together now.




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lecsoman lecsoman is offline
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Default 10-03-2013, 03:01 AM

I have GTX3071-76r (its in between 71 and 76) on my GT-R and the turbo lag is bigger the the whole old continent...

I hope you don't run into this problem with the 3582r.


Slow, stupid and angry...

2007 E90 335i AT, G5 ISO, FSB, BMS flash, RB's, RB PCV, **'s, ER OC's, Injen DCI, BMS OCC, FMIC, ER CP, Tial Q BOV, Walbro 455 LPFP, Snow meth kit injecting E85, runnung on E40-50, Alpina TCU flash, Wavetrac LSD.

Coming: BT FMIC, bigger better water rad.
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aflatau aflatau is offline
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Default 10-03-2013, 10:18 AM

Quote:
Originally Posted by lecsoman
I have GTX3071-76r (its in between 71 and 76) on my GT-R and the turbo lag is bigger the the whole old continent...

I hope you don't run into this problem with the 3582r.
The turbo I picked out was the PT6466.
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sch4400 sch4400 is offline
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Default 10-04-2013, 01:43 PM

So will you use factory solenoid ones???
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Rob180bhp Rob180bhp is offline
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Default 10-05-2013, 03:39 AM

take nothing away from you at all this is just stunning ,looks amazing and im sure will work amazing
my question is

dose the manifold have to be that complicated to work and get good results

I understand reversion ,flow ,manifold pressure ,etc

rb turbos kick out over 500bhp with stock manifolds

so can the standard manifolds be cut off old turbos weld on some vbands and then connect the 2 outlets then up to a turbo ?

just thinking out side the box here ,as its something I might try in the future ?

your manifold is far better design just thinking of other easier solutions
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aflatau aflatau is offline
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Default 10-07-2013, 12:31 AM

Alright guys, she is up and running! Only running 8 pounds right now off the wastegate. Will be dyno tuning it this weekend to see what she does with e85 alone.

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s142nv s142nv is offline
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Default 10-07-2013, 07:12 AM

Very nice! Looking forward to the results.
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mikew2069 mikew2069 is offline
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Default 10-07-2013, 01:19 PM

sick
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