Blade
|
| posted on 20/9/02 at 07:01 PM |
|
|
Rear Diff
Whats the best choice for rear diff?
We're using a Fireblade engine and have been told that we really need a limited slip and also that the best gearing for these engines is around
3.36:1
I've got a standard seirra diff which is 3.62:1 and not limited slip.
I've seen a re-con diff thats 3.36:1 but its not limited Slip.
I can get hold of cossie parts fairly easily but dispite being limited slip they are 3.64 (2wd) and 3.62 (4wd).
What do I go for without spending a fortune on a Quaffe?
What have others used?
|
|
|
|
|
Jon Ison
|
| posted on 20/9/02 at 07:16 PM |
|
|
I run a 3.89 with 15" wheels, try this link
http://www.customautotech.co.uk
go to downloads, load the "pulse per mile" its just summat to set the dash up, but if you put combinations in there you can work out what wil and
won't work,
my set up comes out at 6500/mile, this gives me 120+ top speed and rapid acceleration.....hope this helps, Jon. 
|
|
|
Blade
|
| posted on 20/9/02 at 08:18 PM |
|
|
Cheers mate. I'm off to take a look.
So what sorta diff you got and is it an LSD?
|
|
|
Tony Sissons
|
| posted on 21/9/02 at 03:59 PM |
|
|
Just got my self a 3.62 LSD thats what martin used in his indy blade.
Came from http://www.classicconversions.co.uk
Did a deal for me as i also got drive shafts and rear hubs at same time.
All stuff is full reconditioned to as new.
Hope this helps. 
|
|
|
interestedparty
|
| posted on 21/9/02 at 05:46 PM |
|
|
I'm glad he did a deal for you, Tony, because those price list prices for re-con diffs (£475 +VAT + postage for a 3.62 outright) seem pretty high to
me
John
As some day it may happen that a victim must be found,
I've got a little list-- I've got a little list
Of society offenders who might well be underground,
And who never would be missed-- who never would be missed!
|
|
|
Blade
|
| posted on 21/9/02 at 11:15 PM |
|
|
Yea they do sound a tad high to me aswell.
I've since decided that the 3.62 will do fine as I'm not worried about top end so I think what you have got will be ideal.
Thing is... A cossie diff is 3.62 and LSD and I can get these quite cheaply. So now another question.
If I used a cossie diff. Would I need to use the rear disk brakes and would I still be able to use the MK supplied rear hubs?
|
|
|
bob
|
| posted on 22/9/02 at 07:41 AM |
|
|
I thought Kit-Fit in Newark were pricey but a regular sierra diff in any ratio came out £190 before VAT.
They do LSD but i have no price 01636 893453.
|
|
|
Tony Sissons
|
| posted on 22/9/02 at 08:08 AM |
|
|
All LSD diff use lobro type drive shafts, i.e ones off cars fitted with rear disks.
U can use the bearing carriers and hubs off of a rear disk car just tell martin as they make a different rear uprights for drum and disk fitment. The
mounting holes are slightly differnet.
As to diffs from kit fit all they do is an inspection and change seals not a complete overhaul and there price or and LSD is around £250-300 +vat
depending on ratio.
|
|
|
Blade
|
| posted on 22/9/02 at 09:27 AM |
|
|
I will probably get the whole lot off the cossie then. Diff, shafts, stubs and brakes.
I've already got my MK rear hub carriers but I'm sure Martin will swap em over. Or is there any way of using drums on a cossie (or any lobro)
diff/shafts?
|
|
|
