BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read




 

Post Reply
 
Thread Tools Search this Thread
      07-10-2014, 02:46 PM   #1
Alexim
Private First Class
Brazil
13
Rep
108
Posts

Drives: 2011 1M
Join Date: Jan 2012
Location: Brazil

iTrader: (0)

Arrow BMW 1M Single Turbo Build

BIMMERPOST
     Featured on BIMMERPOST.com
Hi guys.. Just finished my ST build on the 1M and wanted to create this for everyone eles who's done the ST or is planning on it... It's working great. The low to mid range is lost, due to the lag, but once it kicks in it's fantastic. Couldn't be happier... We did everything in house, similar to the fftec top mount kit.. Here's a few pics... Turbo is a Garrett gtx3582r.. Anyone else went single turbo?

Here's a dyno sheet on my local dyno. Note they use a correction factor due to the high altitude. So I'm guessing around 620-650whp. Im using a clutchmasters 850r cause the stock clutch couldnt hold. For tuning Im jb4 g5 with st firmware and backened flash. Currently on meth and around e20. The 4 injectors on the charge pipe are there cause Im switching to full e100 which we have available where I live. So I've added the 4 extra injectors and a separate fuel controller to deal. Not working yet!! But hopefully soon!!!! The turbo is amazing. And I've added a Tial housing for the compressor to quicken up spool a bit...

Attached Images
      
Appreciate 1
prompt292.00
      07-10-2014, 03:18 PM   #2
Pete_vB
Captain
Pete_vB's Avatar
United_States
118
Rep
898
Posts

Drives: '69 GT3, GT4, 1M, 912
Join Date: Nov 2010
Location: SF Bay Area, Shenzhen, Oman

iTrader: (0)

Holy crap that's a big turbo. What are you targeting, ~600 hp at the wheels? What RPM do you spool at now?

__________________
1M, GT4, 1969 Porsche 911 w/ 997 GT3 Cup Motor (435hp & 2,100 lbs)
Appreciate 0
      07-10-2014, 03:28 PM   #3
flzrider
Captain
48
Rep
739
Posts

Drives: AW 1M
Join Date: Oct 2005
Location: Miami, FL

iTrader: (1)

Wow! That looks like a serious setup!

Some questions:
-Any dyno charts?
-What are those 4 injectors on your charge pipe?
-How is the tuning managed? Tuned OEM DME, or some sort of standalone system?

Great work, by the way!
__________________
Appreciate 0
      07-10-2014, 03:28 PM   #4
135Pats
Major General
135Pats's Avatar
United_States
456
Rep
6,478
Posts

Drives: A few BMWs
Join Date: May 2012
Location: Maryland

iTrader: (3)

That's a great choice for the motor OP, you'll comfortably clear 600 wheel assuming octane and fuel are there. What metal did you use for the manifold? SCH10?

Edit: and is that Port fueling you've set up? Any reasons as to why you are spraying pre-TB with that much fuel? Are you batch firing - regardless how are you controlling that?

Ah so many questions!
__________________
E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP

F30 N55 XDrive EBII
Appreciate 0
      07-10-2014, 03:50 PM   #5
mike@x-ph.com
Joint Chiefs of Staff
mike@x-ph.com's Avatar
United_States
23794
Rep
190,150
Posts

Drives: 07-335/12-328/18-M4/21-M4CP
Join Date: Sep 2013
Location: Las Vegas

iTrader: (23)

Nice!! let see some dyno numbers
Appreciate 0
      07-10-2014, 04:02 PM   #6
Shooto82
Private
22
Rep
85
Posts

Drives: BMW 1m
Join Date: Aug 2012
Location: Bahrain

iTrader: (0)

Any reason/advantages going for single bigger turbo instead of upgrading the twin turbos?
Appreciate 0
      07-10-2014, 04:13 PM   #7
135Pats
Major General
135Pats's Avatar
United_States
456
Rep
6,478
Posts

Drives: A few BMWs
Join Date: May 2012
Location: Maryland

iTrader: (3)

Quote:
Originally Posted by Shooto82 View Post
Any reason/advantages going for single bigger turbo instead of upgrading the twin turbos?
When you say "twin turbos" do you mean stock frames? Or more broadly, keeping the exhaust banks completely separate via two turbos and separate manifolds, regardless of size.

So for example VTT is coming with twins. Is that what you mean by twin turbos? Or are we just talking stock frame twins.
__________________
E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP

F30 N55 XDrive EBII
Appreciate 0
      07-10-2014, 04:18 PM   #8
Shooto82
Private
22
Rep
85
Posts

Drives: BMW 1m
Join Date: Aug 2012
Location: Bahrain

iTrader: (0)

I'm referring to the stock frame 2 turbos on the n54. Why moving to single turbo and not upgrading those 2 turbos ?
Appreciate 0
      07-10-2014, 04:20 PM   #9
135Pats
Major General
135Pats's Avatar
United_States
456
Rep
6,478
Posts

Drives: A few BMWs
Join Date: May 2012
Location: Maryland

iTrader: (3)

Quote:
Originally Posted by Shooto82 View Post
I'm referring to the stock frame 2 turbos on the n54. Why moving to single turbo and not upgrading those 2 turbos ?
You can certainly retain a twin turbo setup, ultimately that will probably be ideal for spool purposes. The tuning can also get a bit screwy when you merge the two exhaust banks into one for a single conversion, o2 sensor placement becomes tricky and i'm still not quite convinced that there isn't some funky long-term trim behavior as a result. Everything needs to move pre-turbo where the exhaust gasses are still split.

Twin GTX35s
__________________
E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP

F30 N55 XDrive EBII
Appreciate 0
      07-10-2014, 04:21 PM   #10
MDORPHN
Colonel
290
Rep
2,898
Posts

Drives: AW 1M
Join Date: Oct 2010
Location: Wash, DC

iTrader: (0)

Stock frame turbos run out of breath up top (though they spool-up very quickly down low). They are also "journal bearing" turbos and are not as robust as turbos using ball bearings!

Neil
Appreciate 0
      07-10-2014, 04:38 PM   #11
Alexim
Private First Class
Brazil
13
Rep
108
Posts

Drives: 2011 1M
Join Date: Jan 2012
Location: Brazil

iTrader: (0)

Here's a dyno sheet on my local dyno. Note they use a correction factor due to the high altitude. So I'm guessing around 620-650whp. Im using a clutchmasters 850r cause the stock clutch couldnt hold. For tuning Im jb4 g5 with st firmware and backened flash. Currently on meth and around e20. The 4 injectors on the charge pipe are there cause Im switching to full e100 which we have available where I live. So I've added the 4 extra injectors and a separate fuel controller to deal. Not working yet!! But hopefully soon!!!! The turbo is amazing. And I've added a Tial housing for the compressor to quicken up spool a bit...
Attached Images
 
Appreciate 0
      07-10-2014, 04:39 PM   #12
Alexim
Private First Class
Brazil
13
Rep
108
Posts

Drives: 2011 1M
Join Date: Jan 2012
Location: Brazil

iTrader: (0)

Quote:
Originally Posted by 135Pats
Quote:
Originally Posted by Shooto82 View Post
I'm referring to the stock frame 2 turbos on the n54. Why moving to single turbo and not upgrading those 2 turbos ?
You can certainly retain a twin turbo setup, ultimately that will probably be ideal for spool purposes. The tuning can also get a bit screwy when you merge the two exhaust banks into one for a single conversion, o2 sensor placement becomes tricky and i'm still not quite convinced that there isn't some funky long-term trim behavior as a result. Everything needs to move pre-turbo where the exhaust gasses are still split.

Twin GTX35s
You need to separate the 2 o2 sensors. 1 for cyl 1-3 and 1 for the others. Its quite simple. The twins ran out of breath at high rpms. The st is insane at high. Im currently on 23psi.
Appreciate 0
      07-10-2014, 04:45 PM   #13
135Pats
Major General
135Pats's Avatar
United_States
456
Rep
6,478
Posts

Drives: A few BMWs
Join Date: May 2012
Location: Maryland

iTrader: (3)

@Alexim when you get the fuel crank up the boost! That turbo has a ton of headroom left in it. Nicely done man.
__________________
E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP

F30 N55 XDrive EBII
Appreciate 0
      07-10-2014, 04:50 PM   #14
Alexim
Private First Class
Brazil
13
Rep
108
Posts

Drives: 2011 1M
Join Date: Jan 2012
Location: Brazil

iTrader: (0)

Quote:
Originally Posted by 135Pats
@Alexim when you get the fuel crank up the boost! That turbo has a ton of headroom left in it. Nicely done man.
Will do. Its quite a nice turbo!!! Lots to do still!
Appreciate 0
      07-10-2014, 04:56 PM   #15
Pete_vB
Captain
Pete_vB's Avatar
United_States
118
Rep
898
Posts

Drives: '69 GT3, GT4, 1M, 912
Join Date: Nov 2010
Location: SF Bay Area, Shenzhen, Oman

iTrader: (0)

What tires are you running? 4th gear, 100-130 mph is probably pretty good...
__________________
1M, GT4, 1969 Porsche 911 w/ 997 GT3 Cup Motor (435hp & 2,100 lbs)
Appreciate 0
      07-10-2014, 04:57 PM   #16
Alexim
Private First Class
Brazil
13
Rep
108
Posts

Drives: 2011 1M
Join Date: Jan 2012
Location: Brazil

iTrader: (0)

Quote:
Originally Posted by Pete_vB
What tires are you running? 4th gear, 100-130 mph is probably pretty good...
Im on yokohama neova. 295 rear 265 front. It spins in 3rd when cold, but when warm 3rd and up is fantastic!
Appreciate 0
      07-10-2014, 05:32 PM   #17
Pete_vB
Captain
Pete_vB's Avatar
United_States
118
Rep
898
Posts

Drives: '69 GT3, GT4, 1M, 912
Join Date: Nov 2010
Location: SF Bay Area, Shenzhen, Oman

iTrader: (0)

Quote:
Originally Posted by Alexim View Post
Im on yokohama neova. 295 rear 265 front. It spins in 3rd when cold, but when warm 3rd and up is fantastic!
At nearly double stock power? I suspect it's hilarious!
__________________
1M, GT4, 1969 Porsche 911 w/ 997 GT3 Cup Motor (435hp & 2,100 lbs)
Appreciate 0
      07-10-2014, 11:03 PM   #18
TunedM2C
Brigadier General
TunedM2C's Avatar
No_Country
826
Rep
4,190
Posts

Drives: 2016 LBB M2
Join Date: Jan 2008
Location: Earth

iTrader: (2)

Fantastic but dare I say its too much power for this short wheel based car?
Appreciate 0
      07-10-2014, 11:08 PM   #19
miggs
Lieutenant
22
Rep
406
Posts

Drives: LeMans Blue 135
Join Date: Oct 2013
Location: North Jersey

iTrader: (4)

this is awesome try and get some track times
Appreciate 0
      07-11-2014, 04:48 AM   #20
Berra
Private
Berra's Avatar
3
Rep
65
Posts

Drives: at warp speed!
Join Date: Apr 2014
Location: Earth

iTrader: (0)

What about the rest of the engine? Is the N54 that strong that it can push this kind of power without changing pistons and such?
Appreciate 0
      07-11-2014, 07:01 AM   #21
Alexim
Private First Class
Brazil
13
Rep
108
Posts

Drives: 2011 1M
Join Date: Jan 2012
Location: Brazil

iTrader: (0)

Quote:
Originally Posted by Pete_vB View Post
At nearly double stock power? I suspect it's hilarious!
It sort of is man... I tracked it last year on pouring rain and it was just ridiculous... Even on the dry it VERY tail happy once it kicks in... But it's manageable and quite fun once you get used to the power...

It really is quite a lot for such a short wheelbase, would've been better on a 335i I suspect, but I love this car and am very satisfied!!!
Appreciate 0
      07-11-2014, 07:02 AM   #22
Alexim
Private First Class
Brazil
13
Rep
108
Posts

Drives: 2011 1M
Join Date: Jan 2012
Location: Brazil

iTrader: (0)

Quote:
Originally Posted by Berra View Post
What about the rest of the engine? Is the N54 that strong that it can push this kind of power without changing pistons and such?
The guys over at burger ran at around 25 or 26 psi on a ST n54, so I think it can hold for a while... Maybe in a couple of months I'll open up the engine and forge the pistons, rods, etc... But for now it seems to hold pretty well
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 04:03 AM.




1addicts
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST