Fordmods Logo

Swapping diffs - advice needed 

 

Page 1 of 1 [ 12 posts ] 

 
 Post subject: Swapping diffs - advice needed
Posted: Wed Dec 13, 2006 11:40 am 
Getting Side Ways
Offline
User avatar

Posts: 653

Joined: 2nd May 2006

Gallery: 1 images

Ride: FG G6E Turbo

Location: Melbourne
VIC, Australia

I was not sure of the ratio of my diffs, so I checked them out today and found out the following:

NA Fairlane has a 3.23 LSD
ED futura has a 3.27 SS

I was curious as to why it said HIGH PERFORMANCE on the large tag of my ED futura?!

Is is worth while swapping my 3.27SS for a 3.23LSD, would there be much difference? (accaleration/speed/will my speedo be out by much)

I understand that I could do a straight swap from the Fairlane to the Futura, If i wanted to keep the abs on my Futura what must I do?

Any help will be greatly appreciated

Thanks
Adam

 

_________________

FG G6E Turbo
Grandpa Spec!

Top
 Profile  
 
 
Posted: Wed Dec 13, 2006 3:05 pm 
Getting Side Ways
Offline
User avatar

Posts: 426

Joined: 26th Jan 2005

Gallery: 4 images

Ride: EB GLi 4.0L

Location: Adelaide
SA, Australia

there will be very little difference in speed/acceleration and your speedo will be out by only a tiny bit (if you want to correct this you can either get a jaycar digital speedo corrector or get the speedo sender from a car with the diff ratio you are putting in.)

also, i'm fairly sure an NA fairlane will be 25 spline (weaker) whereas your ED diff will be 28 spline. The means you can't keep your ABS because the axels have the trigger wheels on them and they won't fit into the LSD centre. So, what you need to do is get a 28 spline LSD centre from somewhere and whack that into your current housing with your current axels and then you won't have to worry about changing diff ratios.

just two other quick points:
1. the LSD in the NA is probably rooted (all LSDs die...minispools dont :D )
2. the 25 spline diffs run skinnier bushes (on the lower arms) so your lower trailing arms from a car with a 28 spline diff won't fit. you'll need to get the rear bushes pushed out and EA ones pushed in)

 

_________________

EBII 4.0L GLi | T5 | 3.27 Spool | POD | KKK K27 Turbo | 600x300x76 FMIC | 40mm Wastegate (dead) | RPD Stg1 Cam | B&M Launch Control | Thermos | 3" Dump | Twin 2.25" Zorst | 197kw@3500rpm, 7psi LEAN!

To Come: Hydraulic Handbrake | Coilover Springs | Fuel Pump | Microtech MT8 | 455cc Injectors

Top
 Profile  
 
 
Posted: Wed Dec 13, 2006 3:17 pm 
Getting Side Ways
Offline
User avatar

Posts: 653

Joined: 2nd May 2006

Gallery: 1 images

Ride: FG G6E Turbo

Location: Melbourne
VIC, Australia

Thanks for your help

Is it still possible to do a straight swap disc to disc and scrap the abs?

 

_________________

FG G6E Turbo
Grandpa Spec!

Top
 Profile  
 
 
Posted: Wed Dec 13, 2006 3:21 pm 
Getting Side Ways
Offline

Age: 28

Posts: 1135

Joined: 27th Oct 2005

Gallery: 3 images

Location: SA
SA, Australia

if it says high performance im pretty sure that means its an Lsd
Top
 Profile  
 
 
Posted: Wed Dec 13, 2006 3:38 pm 
Getting Side Ways
Offline
User avatar

Posts: 653

Joined: 2nd May 2006

Gallery: 1 images

Ride: FG G6E Turbo

Location: Melbourne
VIC, Australia

fairmont599 wrote:
if it says high performance im pretty sure that means its an Lsd


:D I hope so

I will quote the diff part # to ford and hopefully they should be abe to help me find some answers

 

_________________

FG G6E Turbo
Grandpa Spec!

Top
 Profile  
 
 
Posted: Wed Dec 13, 2006 3:51 pm 
Getting Side Ways
Offline
User avatar

Posts: 653

Joined: 2nd May 2006

Gallery: 1 images

Ride: FG G6E Turbo

Location: Melbourne
VIC, Australia

I have been told that the High Performance means its a 28 spline 4 pinion and the Fairlane is a 25 spline and 2 pinion, whatever that means! :?

 

_________________

FG G6E Turbo
Grandpa Spec!

Top
 Profile  
 
 
Posted: Wed Dec 13, 2006 11:31 pm 
Getting Side Ways
Offline
User avatar

Age: 35

Posts: 1037

Joined: 5th Nov 2004

Gallery: 1 images

Ride: V8 T5 Fairmont & BA XR6T

Location: Sydney
NSW, Australia

means that you wont see any difference, most of the V8's came out with supposedly high performance diffs, but like you said, they are just 4 spider variants that handle a little more torque, but not worth the effort of changing.

 

_________________

Dima, Mitch & Jay's RPD

Top
 Profile  
 
 
Posted: Wed Dec 13, 2006 11:50 pm 
Fordmods Addict
Offline
User avatar

Age: 31

Posts: 7958

Joined: 1st Jun 2005

Gallery: 13 images

Ride: Falcon

Power: 237 rwkw

Location: Melbourne
VIC, Australia

bArNsY wrote:
I have been told that the High Performance means its a 28 spline 4 pinion and the Fairlane is a 25 spline and 2 pinion, whatever that means! :?

28 spline 4 pin = stronger
25 spline 2 pin = weaker

LSD's will have 'Slip resistant' on the tag.
As slabz has said, using the NA one is a bit harder then just slot in.
Lower trailing arms wont fit, will need EA-EBI bushes pressed in, cant use your ABS axles so ABS will have a fit, and also the tailshaft coupling to the diff is different on EA-EBI diffs.
Lotta work to put in a diff thats weaker, and probably has a f**k LS centre anyway lol

 

_________________

ED XR8 Sprint - S-Trim, V500, 249rwkw
BF MKII F6 Tornado - 237rwkw

Top
 Profile  
 
 
Posted: Thu Dec 14, 2006 9:23 am 
Getting Side Ways
Offline
User avatar

Posts: 653

Joined: 2nd May 2006

Gallery: 1 images

Ride: FG G6E Turbo

Location: Melbourne
VIC, Australia

Last night I decided to check out the diffs on my mum's and brothers Fairlanes, I found this

Mum- '89 NA fairlane (2.77 LSD)
Brother - '92 NC series 2 Fairlane Ghia (3.27 LSD) with abs

So I have decided to nag my brother to swap diffs or wait until his car dies, that way I can have his diff, keep my same ratio (3.27), keep my abs and all should fit nicely.

Thanks for all your help it is greatly appreciated

Adam

 

_________________

FG G6E Turbo
Grandpa Spec!

Top
 Profile  
 
 
Posted: Thu Dec 14, 2006 5:23 pm 
Tyre Shredder
Offline

Age: 32

Posts: 366

Joined: 28th Aug 2005

Ride: Super pursuit

Location: melbourne
VIC, Australia

keep the 327s better take offthan the other

 

_________________

Super Pursuit

Top
 Profile  
 
 
Posted: Thu Dec 14, 2006 11:46 pm 
Getting Side Ways
Offline
User avatar

Posts: 426

Joined: 26th Jan 2005

Gallery: 4 images

Ride: EB GLi 4.0L

Location: Adelaide
SA, Australia

The thing with LSDs is that most of them are stuffed. A working LSD would make a great diff, unfortunately they are either rare or cost a fair bit to reco.

Single spinners start life doing one wheel then as they die they start to do two (welding itself) whereas LSDs start life doing two wheels but (through either under- or over-use) end up doing one wheel. :D

 

_________________

EBII 4.0L GLi | T5 | 3.27 Spool | POD | KKK K27 Turbo | 600x300x76 FMIC | 40mm Wastegate (dead) | RPD Stg1 Cam | B&M Launch Control | Thermos | 3" Dump | Twin 2.25" Zorst | 197kw@3500rpm, 7psi LEAN!

To Come: Hydraulic Handbrake | Coilover Springs | Fuel Pump | Microtech MT8 | 455cc Injectors

Top
 Profile  
 
 
Posted: Fri Dec 15, 2006 7:56 pm 
Getting Side Ways
Offline
User avatar

Age: 33

Posts: 5924

Joined: 5th Nov 2004

Gallery: 7 images

Ride: Ford FPV FG F6 310

Power: 149 rwkw

Location: Brisbane
QLD, Australia

Slabz wrote:
Single spinners start life doing one wheel then as they die they start to do two (welding itself) whereas LSDs start life doing two wheels but (through either under- or over-use) end up doing one wheel. :D

lol thats so true. it's weird how the single spinners do that when they're almost ready to die.

 

_________________

NEW RIDE - FPV FG F6 6spd Auto. 12.26@114MPH, 1.88 60FT on Cheapy Tyres with 38PSI - Stock except K&N filter!

R.I.P. BF XR6 Turbo - You will not be forgotten :( 12.06@120MPH

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 1  [ 12 posts ] 

Who is online

Users browsing this forum: No registered users and 22 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Mon Dec 11, 2017 3:24 pm All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names