Honda and Acura Technical Forums

Aquafina · 09-04-2008, 07:04 PM

This is a review and semi comparison of the new MFactory LSD for the non-LSD B16/LS transmission. This will be a two part review with this first part looking at the quality and the second part reviewing the performance and operation once installed.

Upon arrival the diff looked great, no damage from shipping and no obvious manufacturers defects. To compare quality against I have two other differentials. One is an OBX LSD for the 40mm D series and the other is a Quaife LSD for the 35mm D series.

OBX's quality speaks for itself (poorly). The bottom flange has a manufacturers defect. It appears the flange was not completely machined or was affected by a chemical or some other object.

The quality on the Quaife is good, but the unit I received has a manufacturers defect. The bottom flange is 47 ten-thousandths too small, allowing the new OEM bearing to slide on and off with no force needed (set it on the flange and it falls completely into place). Due to Autotech no longer being the US distributor it appears they are not going to uphold their lifetime warranty (even though the new US distributor has a 35mm D series Quaife in stock whereas Autotech does not) by replacing the diff, instead only issue me a refund and let me pay the higher price the new distributor is selling Quaifes at.

The MFactory diff had no manufacturers defects. I disassembled it completely and inspected it (not required and definitely not recommended by MFactory, only reason this was done is due to this unit is being used for testing). The internals of the diff look great. No burrs, nothing missing, washers installed correctly, etc. I dont have a OBX or Quaife B16 LSD to compare it against, but it appears MFactory has taken steps to remove unneeded weight from the differential. Reassembly went smoothly with no problems after cleaning the threads up to remove the Loctite.

I'm very anxious to install this and do the actual testing on it. Not expecting any problems as the other test units have held up fine in road racing and 900whp drag racing.

Onto the pictures. MFactory on left, Quaife in the middle, and OBX on the right.

Manufacturers defect on OBX

Showing how the gears mesh up for those who have never seen the internals. Top axle (not visible as it is in the case still) is the same as the bottom axle (visible). Outer gears mesh up 50/50. Gears are very light, finish is very smooth with no burrs or flaws anywhere on them.

Top axle gears

Disassembled and laid out.

Modified by Aquafina at 11:26 PM 9/4/2008

Modified by Aquafina at 11:45 PM 9/4/2008

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MFactory · 09-04-2008, 07:27 PM

Pictures look great, thanks Chris

get RIGHT · 09-04-2008, 07:33 PM

Great write up, Chris. I thought your hand on a stick was a nice touch.

BIGTUNA · 09-04-2008, 07:33 PM

MFactory

Excellent Products

Aquafina · 09-04-2008, 07:36 PM

Quote:

Originally Posted by get RIGHT

Great write up, Chris. I thought your hand on a stick was a nice touch.

USDM baby!

get RIGHT · 09-04-2008, 07:36 PM

LMAO.

RagingAngel · 09-04-2008, 07:54 PM

Exxxcelllllent....

Mista Bone · 09-04-2008, 09:00 PM

I like your pointer

coolhandluke · 09-04-2008, 09:19 PM

Quote:

Originally Posted by get RIGHT

Great write up, Chris. I thought your hand on a stick was a nice touch.

A solid review, excellent. This only backs up your recommendations on deciding to run the MFactory LSD. Im anxious for my tranny to arrive so you can build it.

88ED8 · 09-05-2008, 02:59 AM

Nice!!!

Pippen_001 · 09-05-2008, 03:41 AM

Great Job!

turbo boost · 09-05-2008, 06:19 AM

so are these M factory gsr/type r lsd capable to holding up to 4-550whp drag racing? if not what whp are they designed for?
thanks

unusual71 · 09-05-2008, 07:32 AM

In this picture what you see is a casting flaw. Basically, the company who makes the cast part only uses the bare minimum of material to save money/machining time. the company that machines the outer housing of the LSD has a certain diameter to hold for that particular section and sometimes the size of the cast piece is under the dimension they want. I work in a machine shop and we have parts like this all the time. basically a company (OBX) will say they they want 50%, (75%, 100%, etc.) cleanup on any given section. A high quality company will say 100% cleanup on all dimensions meaning, they dont want any of the rough cast left.
Trust me from experience that the flaw is purely aesthetic. the part's integrity hasn't been effected in any way!!
That being said if a company lets this stuff pass inspection it probably lets other little stuff slip too, but maybe not.

Aquafina · 09-05-2008, 08:56 AM

They do. Last OBX I installed had .010" of runout.

Blown90hatcH · 09-06-2008, 05:04 PM

Quote:

Originally Posted by Mista Bone

I like your pointer

Agreed!

Aquafina · 09-06-2008, 05:20 PM

Quote:

Originally Posted by turbo boost

so are these M factory gsr/type r lsd capable to holding up to 4-550whp drag racing? if not what whp are they designed for?
thanks

Holding 900whp with a wicked clutch and big slicks.

turbo boost · 09-07-2008, 01:23 PM

Quote:

Originally Posted by Aquafina

Holding 900whp with a wicked clutch and big slicks.

glad to hear..i think ill pick one up

Furyof4 · 09-08-2008, 04:44 PM

Good to see its out now.

Aquafina · 09-08-2008, 07:51 PM

B16A2 LSD's should be ready in 3 weeks. 10% discount if you preorder NOW.
http://www.honda-tech.com/zerothread?id=2362025

Part 2 should be ready next week.

Bense · 09-13-2008, 07:30 PM

very nice

Bisimoto · 09-17-2008, 01:04 AM

Aquafina · 09-17-2008, 05:18 AM

Parts shipped out last night so part 2 should come early-mid next week.

OBX pictured has .023" runout. This is the newest version OBX.

Runout will cause a visible "wobble" while spinning the diff. Runout on this one is bad enough that it is almost binding on the VSS. Stops itself in 3 spins. Tried multiple VSS's and all the same. (runout checked with and without VSS). If this was used in a trans, final drive and diff bearing failure would soon follow.

Modified by Aquafina at 9:27 AM 9/17/2008

SeVeNisOnE · 09-17-2008, 06:09 AM

So this will fit my '00 Si transmission right? I've been wanting an LSD for awhile and have been scared to get the OBX.

MFactory · 09-17-2008, 06:35 AM

Yup, will fit fine

xchipx · 09-18-2008, 03:39 AM

will these fit a cable 1990 b16a1 ( edm )

09-04-2008, 07:27 PM	#2
MFactory H-T Basic Sponsor Join Date: Dec 2005 Location: Centerville, UT Posts: 2,285	Pictures look great, thanks Chris __________________ www.teamMFactory.com - Official Transmission Supplier in 2010 for Team Honda R&D Americas MFactory Forged Helical & Plate LSD's - Only $649.95/$899.95 + Shipping! MFactory B & K Series Dog Gear Sets >> Now Accepting Pre-Orders <<

09-04-2008, 07:33 PM	#3
get RIGHT Senior Member Join Date: Jul 2005 Location: selling YOU a Honda or Acura Posts: 11,280	Re: (MFactory) Great write up, Chris. I thought your hand on a stick was a nice touch. __________________ SCCA solo II STX #77 ITR EXPO FTW!

09-04-2008, 07:33 PM	#4
BIGTUNA Member Join Date: Apr 2003 Location: Baltimore, MD, USA Posts: 1,224	Re: (MFactory) MFactory Excellent Products

09-04-2008, 07:36 PM	#6
get RIGHT Senior Member Join Date: Jul 2005 Location: selling YOU a Honda or Acura Posts: 11,280	Re: (Aquafina) LMAO. __________________ SCCA solo II STX #77 ITR EXPO FTW!

09-04-2008, 07:54 PM	#7
RagingAngel Member Join Date: May 2000 Location: The Dirty Hotness Posts: 3,972	Re: (Aquafina) Exxxcelllllent....

09-04-2008, 09:00 PM	#8
Mista Bone Member Join Date: Oct 2001 Location: Cincity, OH, USA Posts: 8,004	I like your pointer __________________ "D" Tranny Guru

09-05-2008, 02:59 AM	#10
88ED8 Member Join Date: Aug 2004 Posts: 4,263	Nice!!! __________________ FS: MINT JDM H22A Pistons, $85 shipped http://hondamarketplace.com/showthread.php?t=2691963

09-05-2008, 03:41 AM	#11
Pippen_001 Junior Member Join Date: Jul 2004 Posts: 370	Great Job! __________________ Old setup: EG H22A2 stock 13.5@161km/h on street tires, 2.2 60' New setup: EG H2B (no times yet)

09-05-2008, 06:19 AM	#12
turbo boost Junior Member Join Date: Feb 2005 Location: Canada Posts: 879	Re: (Pippen_001) so are these M factory gsr/type r lsd capable to holding up to 4-550whp drag racing? if not what whp are they designed for? thanks __________________ 404whp @ 17psi Tuned on crome 11.5@128mph

09-05-2008, 07:32 AM	#13
unusual71 Junior Member Join Date: Jul 2005 Location: Canada Posts: 944	Re: (turbo boost) In this picture what you see is a casting flaw. Basically, the company who makes the cast part only uses the bare minimum of material to save money/machining time. the company that machines the outer housing of the LSD has a certain diameter to hold for that particular section and sometimes the size of the cast piece is under the dimension they want. I work in a machine shop and we have parts like this all the time. basically a company (OBX) will say they they want 50%, (75%, 100%, etc.) cleanup on any given section. A high quality company will say 100% cleanup on all dimensions meaning, they dont want any of the rough cast left. Trust me from experience that the flaw is purely aesthetic. the part's integrity hasn't been effected in any way!! That being said if a company lets this stuff pass inspection it probably lets other little stuff slip too, but maybe not.

09-05-2008, 08:56 AM	#14
Aquafina Member Join Date: Jan 2003 Location: Johnson City TN Posts: 9,862	They do. Last OBX I installed had .010" of runout. __________________ Whoopee Doo Racing: MFactory, Rocket Motorsports, Action Clutch////ITR Expo Sponsor 2006-2009////MFactory North American Installer////Need a trans built? Doo it once, Doo it right.

09-08-2008, 07:51 PM	#19
Aquafina Member Join Date: Jan 2003 Location: Johnson City TN Posts: 9,862	B16A2 LSD's should be ready in 3 weeks. 10% discount if you preorder NOW. http://www.honda-tech.com/zerothread?id=2362025 Part 2 should be ready next week. __________________ Whoopee Doo Racing: MFactory, Rocket Motorsports, Action Clutch////ITR Expo Sponsor 2006-2009////MFactory North American Installer////Need a trans built? Doo it once, Doo it right.

09-13-2008, 07:30 PM	#20
Bense Moderator Join Date: Mar 2003 Location: Clemson, South Carolina! Posts: 9,233	very nice __________________ One day you will see me in a fly lamborghini On my way to the beach picking up girls in bikinis I’m a hip-hop star and yo I’m bound to go far And all the girlies jump right on it...... When you drive a dope car http://people.clemson.edu/~ABense

09-17-2008, 01:04 AM	#21
Bisimoto H-T Basic Sponsor Join Date: Dec 2002 Location: Ontario, Ca, USA Posts: 1,669	Re: (Bense) __________________ World's Fastest All Motor SOHC Honda: 1988 CRX Unibody, D16 full street: 12.68 @ 107mph 1988 CRX Unibody, D15 full race: 10.77 @ 123mph 2006 Insight Unibody, F22A: 9.38 @ 150.8mph...www.bisimoto.com

09-17-2008, 05:18 AM	#22
Aquafina Member Join Date: Jan 2003 Location: Johnson City TN Posts: 9,862	Parts shipped out last night so part 2 should come early-mid next week. OBX pictured has .023" runout. This is the newest version OBX. Runout will cause a visible "wobble" while spinning the diff. Runout on this one is bad enough that it is almost binding on the VSS. Stops itself in 3 spins. Tried multiple VSS's and all the same. (runout checked with and without VSS). If this was used in a trans, final drive and diff bearing failure would soon follow. Modified by Aquafina at 9:27 AM 9/17/2008 __________________ Whoopee Doo Racing: MFactory, Rocket Motorsports, Action Clutch////ITR Expo Sponsor 2006-2009////MFactory North American Installer////Need a trans built? Doo it once, Doo it right.

09-17-2008, 06:09 AM	#23
SeVeNisOnE Junior Member Join Date: Oct 2007 Location: Dallas, Tx, USA Posts: 248	Re: (Aquafina) So this will fit my '00 Si transmission right? I've been wanting an LSD for awhile and have been scared to get the OBX. __________________ '96 Civic Hatch \| Sleeved B18C 84.5mm, B16A head, 12.5:1 comp \| Ported 74mm TB \| Skunk2 IM \| DC Sports Race Header \| A'PEXi WS2 Exhaust \| Skunk2 Cam Gears \| Skunk 2 Stage 2 cams \| 550cc Injectors \| Hondata S100

09-17-2008, 06:35 AM	#24
MFactory H-T Basic Sponsor Join Date: Dec 2005 Location: Centerville, UT Posts: 2,285	Yup, will fit fine __________________ www.teamMFactory.com - Official Transmission Supplier in 2010 for Team Honda R&D Americas MFactory Forged Helical & Plate LSD's - Only $649.95/$899.95 + Shipping! MFactory B & K Series Dog Gear Sets >> Now Accepting Pre-Orders <<

09-18-2008, 03:39 AM	#25
xchipx Junior Member Join Date: Jul 2008 Location: sheffield, yorkshire, england Posts: 70	Re: (MFactory) will these fit a cable 1990 b16a1 ( edm )

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