E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Supercharger stuff (MILVs+AA+BPC)



Reply
 
Thread Tools Search this Thread
      10-22-2018, 09:40 AM   #661
CobraMarty
Major
CobraMarty's Avatar
619
Rep
1,402
Posts

Drives: 2007 328xi e90 + e92
Join Date: Sep 2010
Location: BimmerMILVs.com

iTrader: (7)



This is the only dyno curve with a boost curve included.
Unfortunately not a stock N52.
This car has catless headers and 3IM which both should LOWER boost as they allow more air to flow thru the engine.

So it looks like at 7000rpm it makes 5psi boost. Your results may vary due to your mods.
The nice part is that the boost curve is very linear so predicting boost with different pulleys is easier and there is some calculations/scientific involved, not just guessing.

So for this particular car N52 with ESS SC, catless headers and 3IM-
4.50" 115mm pulley makes 5psi boost at 7000rpm.

It is predicted based on linear boost curve that with-
4.25" 108mm pulley will make 5.5psi at 7000rpm, +0.5 pounds of boost.
3.80" 96.5mm pulley will make 6.0psi at 7000rpm, +1.0 pounds of boost.
3.40" 86.4mm pulley will make 7.0psi at 7000rpm, +2.0 pounds of boost.
Appreciate 1
dwashy64.50
      10-22-2018, 09:57 AM   #662
CobraMarty
Major
CobraMarty's Avatar
619
Rep
1,402
Posts

Drives: 2007 328xi e90 + e92
Join Date: Sep 2010
Location: BimmerMILVs.com

iTrader: (7)

Belt sizes/length is a little more difficult to predict but it looks like based on 60% wrap-
4.50"- 102.5" that is ESS stock/standard sizes
4.25"- 102.0"
3.80"- 101.0" or 101.5"
3.40"- 100.5"

And luckily Dayco has 6 rib serpentine belts in several sizes/lengths-
102.5, 102.0, 101.5, 101.0, 100.5, and 100.0".
Part number is xx61025, etc.
Appreciate 1
dwashy64.50
      10-22-2018, 10:28 AM   #663
Noir
Major
Noir's Avatar
United_States
883
Rep
1,413
Posts

Drives: 2006 E90 330i 6MT
Join Date: Aug 2016
Location: San Antonio

iTrader: (1)

I'm enjoying the power a little too much lol...
Got an audible chatter when the clutch is disengaged. :
Looking into SMF as a possible replacement / upgrade. Looking into a heftier clutch as well, if any of you fine ladies/lads have any input as to what compatible brand I should be looking into ♡.
__________________
See you, space cowboy.
Supercharged
Appreciate 1
dwashy64.50
      10-22-2018, 10:44 AM   #664
CobraMarty
Major
CobraMarty's Avatar
619
Rep
1,402
Posts

Drives: 2007 328xi e90 + e92
Join Date: Sep 2010
Location: BimmerMILVs.com

iTrader: (7)

Check out ECS Tuning. They have a lot of options and brands. 10% off sale now.
Appreciate 1
Noir883.00
      10-22-2018, 11:46 AM   #665
dwashy
Private First Class
65
Rep
156
Posts

Drives: 2006 E90 330i
Join Date: Jan 2018
Location: MO

iTrader: (1)

Quote:
Originally Posted by Noir View Post
I'm enjoying the power a little too much lol...
Got an audible chatter when the clutch is disengaged. :
Looking into SMF as a possible replacement / upgrade. Looking into a heftier clutch as well, if any of you fine ladies/lads have any input as to what compatible brand I should be looking into ♡.
I got the Valeo SMF conversion kit, part number: 835115. Sitting in my garage right now, seems to be pretty well received. SMF and clutch/pp included for $500-$600. SMF maintains the same weight as the original

This thread was "fun" to follow that is related to SMF They go over fitment for 328i/328xi/330i/330xi as well somewhere inside
__________________
N52 | +1mm MILVs | Catless | 3-Stage IM | BPC Tune | 3.64 diff | AirLift Performance 3H | M3 Control Arms | SPL Parts BumpSteer Correction | UUC Evo 3 Shifter | CCV Delete | Valeo SMF Flywheel | CSF Aluminum Rad | VAC Front Hub Extenders | BMS Cowl Filter Delete
Appreciate 1
Noir883.00
      10-22-2018, 12:17 PM   #666
Noir
Major
Noir's Avatar
United_States
883
Rep
1,413
Posts

Drives: 2006 E90 330i 6MT
Join Date: Aug 2016
Location: San Antonio

iTrader: (1)

^ Hey man, thanks!!!
Definitely my homework for tonight!
__________________
See you, space cowboy.
Supercharged
Appreciate 0
      10-22-2018, 12:37 PM   #667
desertman123
E82 Mudflap Ambassador
desertman123's Avatar
United_States
2212
Rep
2,219
Posts

Drives: '08 128i
Join Date: May 2016
Location: Orlando, FL

iTrader: (0)

Garage List
1992 Honda Beat  [9.50]
2008 BMW 128i  [10.00]
2014 BMW 528i  [10.00]
Maybe look into the MAF-less Euro IAT tune Bimmerlabs has available and build off that?
__________________
My 2008 128i - Sparkling Graphite/Beige - Sport pkg - 6MT - Click me!
Parents' 2014 528i - Mineral White/Ivory White - fully loaded
Instagram @Andreys_128i and @Honda.Bito
Appreciate 0
      10-22-2018, 06:18 PM   #668
Torgus
Slow.
Torgus's Avatar
United_States
3779
Rep
7,150
Posts

Drives: Single Turbo N54 on Meth!
Join Date: Jun 2012
Location: Boston, MA

iTrader: (2)

Garage List
2007 BMW E92  [10.00]
2007 BMW E90  [0.00]
2006 BMW E91  [0.00]
Quote:
Originally Posted by CobraMarty View Post


This is the only dyno curve with a boost curve included.
Unfortunately not a stock N52.
This car has catless headers and 3IM which both should LOWER boost as they allow more air to flow thru the engine.

So it looks like at 7000rpm it makes 5psi boost. Your results may vary due to your mods.
The nice part is that the boost curve is very linear so predicting boost with different pulleys is easier and there is some calculations/scientific involved, not just guessing.

So for this particular car N52 with ESS SC, catless headers and 3IM-
4.50" 115mm pulley makes 5psi boost at 7000rpm.

It is predicted based on linear boost curve that with-
4.25" 108mm pulley will make 5.5psi at 7000rpm, +0.5 pounds of boost.
3.80" 96.5mm pulley will make 6.0psi at 7000rpm, +1.0 pounds of boost.
3.40" 86.4mm pulley will make 7.0psi at 7000rpm, +2.0 pounds of boost.
Great info. It would be nice if there was a tried and true way to say hit 350whp at redline. The 7psi would certainly help. The block etc. can handle it, that is for sure.
Appreciate 0
      10-22-2018, 06:57 PM   #669
CobraMarty
Major
CobraMarty's Avatar
619
Rep
1,402
Posts

Drives: 2007 328xi e90 + e92
Join Date: Sep 2010
Location: BimmerMILVs.com

iTrader: (7)

+2psi (5 to 7psi) with a pulley change will add about 12% more power.
Appreciate 0
      10-22-2018, 07:15 PM   #670
rjahl
Colonel
rjahl's Avatar
996
Rep
2,287
Posts

Drives: Z4 35is
Join Date: Jun 2011
Location: Tampa

iTrader: (0)

Garage List
2012 Z4 35is  [0.00]
Quote:
Originally Posted by CobraMarty View Post


This is the only dyno curve with a boost curve included.
Unfortunately not a stock N52.
This car has catless headers and 3IM which both should LOWER boost as they allow more air to flow thru the engine.

So it looks like at 7000rpm it makes 5psi boost. Your results may vary due to your mods.
The nice part is that the boost curve is very linear so predicting boost with different pulleys is easier and there is some calculations/scientific involved, not just guessing.

So for this particular car N52 with ESS SC, catless headers and 3IM-
4.50" 115mm pulley makes 5psi boost at 7000rpm.

It is predicted based on linear boost curve that with-
4.25" 108mm pulley will make 5.5psi at 7000rpm, +0.5 pounds of boost.
3.80" 96.5mm pulley will make 6.0psi at 7000rpm, +1.0 pounds of boost.
3.40" 86.4mm pulley will make 7.0psi at 7000rpm, +2.0 pounds of boost.
Interesting how boost pressure uncreased almost 1 psi from 6500 to 7000 rpm yet torque continued to drop.

Was this in the tune, or is something else limiting this motor at high RPM?
Appreciate 0
      10-22-2018, 10:24 PM   #671
Phyrexia
Resident Pedant
United_States
503
Rep
792
Posts

Drives: '15 335i 8AT
Join Date: Nov 2017
Location: Limbo

iTrader: (1)

Quote:
Originally Posted by rjahl View Post
Interesting how boost pressure uncreased almost 1 psi from 6500 to 7000 rpm yet torque continued to drop.

Was this in the tune, or is something else limiting this motor at high RPM?
It seems pretty well established that the 3IM doesn't flow well past about 6500 RPM.
__________________
'15 F30 335i 8AT Estoril II/Black (12.218 @ 114.94mph)
MHD Stage 2+ 93 / XHP Stage 3 / M-Goodies / K&N Filter / ER CP / CSF IC / NGK 97506 / ER DP / Michelin A/S 3+
Appreciate 0
      10-23-2018, 01:19 AM   #672
Taskmaster
Banned
Japan
2463
Rep
9,004
Posts

Drives: M235i 6MT / E92 328 Msport 6MT
Join Date: Nov 2013
Location: Florida

iTrader: (6)

Quote:
Originally Posted by dwashy View Post
I got the Valeo SMF conversion kit, part number: 835115. Sitting in my garage right now, seems to be pretty well received. SMF and clutch/pp included for $500-$600. SMF maintains the same weight as the original

This thread was "fun" to follow that is related to SMF They go over fitment for 328i/328xi/330i/330xi as well somewhere inside
I have one brand new in the box still.
Appreciate 0
      10-23-2018, 01:20 AM   #673
Taskmaster
Banned
Japan
2463
Rep
9,004
Posts

Drives: M235i 6MT / E92 328 Msport 6MT
Join Date: Nov 2013
Location: Florida

iTrader: (6)

Quote:
Originally Posted by Phyrexia View Post
It seems pretty well established that the 3IM doesn't flow well past about 6500 RPM.
I think it’s resonance, not flow. I don’t think it matters when air is being forced into it. Might be the Valverde if limiter if anything.
Appreciate 0
      10-23-2018, 05:18 AM   #674
CobraMarty
Major
CobraMarty's Avatar
619
Rep
1,402
Posts

Drives: 2007 328xi e90 + e92
Join Date: Sep 2010
Location: BimmerMILVs.com

iTrader: (7)

Quote:
Originally Posted by rjahl View Post
Interesting how boost pressure uncreased almost 1 psi from 6500 to 7000 rpm yet torque continued to drop.

Was this in the tune, or is something else limiting this motor at high RPM?
I think that the dyno pull ended about 6700rpm and that bump in boost is the valvetronic intake valves closing/shutting when getting off the throttle at the end of the pull and the momentary supercharger output before it revs down.
Seen more dramatically seen in other SC and turbo cars, hence the use of a blow off valve.
Here in the BMW N52 it is so minimal and the intake valves still stay cracked open at idle vs. the throttle blade slamming completely closed in other engines.
Appreciate 1
Torgus3779.00
      10-23-2018, 09:17 AM   #675
Noir
Major
Noir's Avatar
United_States
883
Rep
1,413
Posts

Drives: 2006 E90 330i 6MT
Join Date: Aug 2016
Location: San Antonio

iTrader: (1)

Quote:
Originally Posted by Taskmaster View Post
Quote:
Originally Posted by dwashy View Post
I got the Valeo SMF conversion kit, part number: 835115. Sitting in my garage right now, seems to be pretty well received. SMF and clutch/pp included for $500-$600. SMF maintains the same weight as the original

This thread was "fun" to follow that is related to SMF They go over fitment for 328i/328xi/330i/330xi as well somewhere inside
I have one brand new in the box still.
__________________
See you, space cowboy.
Supercharged
Appreciate 0
      10-23-2018, 09:56 AM   #676
Taskmaster
Banned
Japan
2463
Rep
9,004
Posts

Drives: M235i 6MT / E92 328 Msport 6MT
Join Date: Nov 2013
Location: Florida

iTrader: (6)

Quote:
Originally Posted by Noir View Post
Let me know.
Appreciate 0
      10-23-2018, 11:18 AM   #677
Noir
Major
Noir's Avatar
United_States
883
Rep
1,413
Posts

Drives: 2006 E90 330i 6MT
Join Date: Aug 2016
Location: San Antonio

iTrader: (1)

Quote:
Originally Posted by Taskmaster View Post
Quote:
Originally Posted by Noir View Post
Let me know.
if you still have it by the first, I'll help put some dough in your pocket! gonna get some input from a Fren
__________________
See you, space cowboy.
Supercharged
Appreciate 0
      10-23-2018, 11:38 AM   #678
atmosphericM
Basic Bimmer
United_States
518
Rep
935
Posts

Drives: E92 328i 6MT ///M
Join Date: Sep 2017
Location: B'ham

iTrader: (1)

Garage List
Quote:
Originally Posted by Taskmaster View Post
"Carrolll... CAAARRROOOOLLLLL.. I'm like where the hell is Carol?!"
__________________
Black Sapphire 328i ///M Sport Coupé
Save the Manuals!
Appreciate 0
      10-23-2018, 11:40 AM   #679
atmosphericM
Basic Bimmer
United_States
518
Rep
935
Posts

Drives: E92 328i 6MT ///M
Join Date: Sep 2017
Location: B'ham

iTrader: (1)

Garage List
Quote:
Originally Posted by 6ixSpd View Post
Noir, did you dyno your car with your S/C and MILVs?

I think if I came across a good deal on a S/C kit, I'll have to jump on it. That's the last step in maximizing my N52, too.
LOL. Has E92 M3. Gets 328i for reliable DD. Goes FBO and then SC with said 328i.
__________________
Black Sapphire 328i ///M Sport Coupé
Save the Manuals!
Appreciate 0
      10-23-2018, 01:42 PM   #680
CobraMarty
Major
CobraMarty's Avatar
619
Rep
1,402
Posts

Drives: 2007 328xi e90 + e92
Join Date: Sep 2010
Location: BimmerMILVs.com

iTrader: (7)

Ordered 3.80" and 3.40" pulleys today. I'll send them to the machinist when I get them.

Be careful, use at your own risk.
Appreciate 1
Phyrexia502.50
      10-23-2018, 01:45 PM   #681
Phyrexia
Resident Pedant
United_States
503
Rep
792
Posts

Drives: '15 335i 8AT
Join Date: Nov 2017
Location: Limbo

iTrader: (1)

Quote:
Originally Posted by atmosphericM View Post
LOL. Has E92 M3. Gets 328i for reliable DD. Goes FBO and then SC with said 328i.
Except I bet a supercharged 328 is more reliable than an S65 car...

Hey how's your bumper/neck?
__________________
'15 F30 335i 8AT Estoril II/Black (12.218 @ 114.94mph)
MHD Stage 2+ 93 / XHP Stage 3 / M-Goodies / K&N Filter / ER CP / CSF IC / NGK 97506 / ER DP / Michelin A/S 3+
Appreciate 0
      10-23-2018, 05:38 PM   #682
Torgus
Slow.
Torgus's Avatar
United_States
3779
Rep
7,150
Posts

Drives: Single Turbo N54 on Meth!
Join Date: Jun 2012
Location: Boston, MA

iTrader: (2)

Garage List
2007 BMW E92  [10.00]
2007 BMW E90  [0.00]
2006 BMW E91  [0.00]
Quote:
Originally Posted by Phyrexia View Post
Except I bet a supercharged 328 is more reliable than an S65 car...

Hey how's your bumper/neck?
As a DD for sure. More reliable, less fun.

BMW did a great job reminding everyone how unreliable bmws can be with the n54 and s65. The m57 diesel also sucks.

Looking back on things I should have never bought a single BMW. I'd have alot more $$$.

Looking forward to see some smaller pulleys on the n52s.
Appreciate 2
Noir883.00
Phyrexia502.50
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 02:08 PM.




e90post
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