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 Diff's 
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Stylus owner

Joined: Fri Mar 10, 2006 8:49 pm
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Location: ASTON CLINTON BUCKS
Post Diff's
If anyone has a 4.1 English diff in really good condition that's not required for the future , I'm in the market for one :wink: No intention of changing now but it's a planned back-up if my 13 inch wheels change has more effect than my calculations re - top speed :oops:

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I just love the Stylus but she keeps swallowing £££ !
[b]Alfa Red 159 2.4 jtdm ti 260bhp 365lbft / BilsteinB12 + Adjustable Powerflex camber/castor bushes. Red STYLUS 2lt zetec 231bhp 185lbft Dunnell . RED 1972 Alfa 2lt GTAm replica 170bhp.


Tue Oct 29, 2013 10:53 am
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Joined: Sat Apr 07, 2007 10:24 pm
Posts: 333
Location: Chester UK
Post Re: Diff's
If you go to 13" wheels, then top speed will drop?
Don't you need a 3.54 to compensate?
(forgive me if I have the wrong end of the stick)

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Thu Oct 31, 2013 4:46 pm
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Joined: Fri Mar 10, 2006 8:49 pm
Posts: 3749
Location: ASTON CLINTON BUCKS
Post Re: Diff's
norma wrote:
If you go to 13" wheels, then top speed will drop?
Don't you need a 3.54 to compensate?
(forgive me if I have the wrong end of the stick)

A 3.54 would be way too high geared and put me back right where I started with the 15 inch wheels. 13's will drop me 8mph top end , a 4.1 will get me back to 140mph plus.

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I just love the Stylus but she keeps swallowing £££ !
[b]Alfa Red 159 2.4 jtdm ti 260bhp 365lbft / BilsteinB12 + Adjustable Powerflex camber/castor bushes. Red STYLUS 2lt zetec 231bhp 185lbft Dunnell . RED 1972 Alfa 2lt GTAm replica 170bhp.


Fri Nov 01, 2013 12:27 am
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Joined: Wed Oct 30, 2013 8:23 pm
Posts: 35
Location: scunthorpe
Post Re: Diff's
good morning rob
think I mite have one but in need of repair. the bearings have gone on near side wheel side all the teeth look ok just made a horrible sound when in car.if u could explain how I should check the ratio your welcome to have it .regards ian


Fri Nov 01, 2013 11:04 am
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Stylus owner

Joined: Fri Mar 10, 2006 8:49 pm
Posts: 3749
Location: ASTON CLINTON BUCKS
Post Re: Diff's
ianminki wrote:
good morning rob
think I mite have one but in need of repair. the bearings have gone on near side wheel side all the teeth look ok just made a horrible sound when in car.if u could explain how I should check the ratio your welcome to have it .regards ian

Not sure how many teeth each ratio has , as always bought previous diff's as listed :roll:

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I just love the Stylus but she keeps swallowing £££ !
[b]Alfa Red 159 2.4 jtdm ti 260bhp 365lbft / BilsteinB12 + Adjustable Powerflex camber/castor bushes. Red STYLUS 2lt zetec 231bhp 185lbft Dunnell . RED 1972 Alfa 2lt GTAm replica 170bhp.


Fri Nov 01, 2013 1:08 pm
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Joined: Wed Mar 01, 2006 11:48 am
Posts: 693
Location: Liphook, Hampshire, UK
Post Re: Diff's
4.44 = 9 / 40 (pinion teeth/crownwheel teeth)
4.125 = 8/33
3.89 = 9/35
3.77 = 9/34
3.54 = 11/39

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Fri Nov 01, 2013 1:46 pm
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Joined: Wed Oct 30, 2013 8:23 pm
Posts: 35
Location: scunthorpe
Post Re: Diff's
looks like the one I have is a 3.54 according to mattd's little chart with prop flange bolt center's are 45mm x 55mm if ita any help to u rob regards ian


Sat Nov 02, 2013 3:10 pm
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Stylus owner

Joined: Fri Mar 10, 2006 8:49 pm
Posts: 3749
Location: ASTON CLINTON BUCKS
Post Re: Diff's
ianminki wrote:
looks like the one I have is a 3.54 according to mattd's little chart with prop flange bolt center's are 45mm x 55mm if ita any help to u rob regards ian


Thanks for thinking of me Ian but with a 3.54 diff , I'd need 300bhp plus to be competitive and that would cost more than I can muster to supercharge my engine plus all the other bits needed to run it/new Atlas axle & gearbox etc.

_________________
I just love the Stylus but she keeps swallowing £££ !
[b]Alfa Red 159 2.4 jtdm ti 260bhp 365lbft / BilsteinB12 + Adjustable Powerflex camber/castor bushes. Red STYLUS 2lt zetec 231bhp 185lbft Dunnell . RED 1972 Alfa 2lt GTAm replica 170bhp.


Sun Nov 03, 2013 11:04 am
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