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Author Topic: Diff keep or change?  (Read 2437 times)

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wilvo

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Diff keep or change?
« on: 24 October 2009, 16:48:55 »
Hi i have a 99 face lift 2.5 manual cdx estate but am also breaking a 2000 3.0 elite saloon would to diff off the elite be better than mine on the 2.5?
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tunnie

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Re: Diff keep or change?
« Reply #1 on: 24 October 2009, 17:19:06 »
you don't mention if the 3.0 is an auto or manual? yes they will switch over fine, but Autos have longer ratios
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wilvo

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Re: Diff keep or change?
« Reply #2 on: 25 October 2009, 09:35:59 »
The 3 litre is an auto, so better i keep 2.5 as im after more acceleration- what are chances that 3 litre has lsd?
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Andy B

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Re: Diff keep or change?
« Reply #3 on: 25 October 2009, 09:37:41 »
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..... what are chances that 3 litre has lsd?

Very slim to no chance.  ;)  ;)  ;) :y
Possibility if it was a white car with holes in the roof. ;)
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Elite Pete

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Re: Diff keep or change?
« Reply #4 on: 25 October 2009, 09:38:41 »
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The 3 litre is an auto, so better i keep 2.5 as im after more acceleration- what are chances that 3 litre has lsd?
Virtually none, it was mainly the x police manual 3.0 which had the LSD.
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wilvo

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Re: Diff keep or change?
« Reply #5 on: 25 October 2009, 09:42:36 »
o well can hope i suppose so what is best for accelleration? 2.5-3.0?
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tunnie

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Re: Diff keep or change?
« Reply #6 on: 25 October 2009, 10:31:45 »
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o well can hope i suppose so what is best for accelleration? 2.5-3.0?

do i really need to answer that?  :-?
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jonathanh

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Re: Diff keep or change?
« Reply #7 on: 25 October 2009, 11:14:01 »
the answer depends

If your question is which car is quicker for acceleration then a 3.0 auto is marginally quicker than 2.5 manual.

If your question is which diff, fitted to your 2.5 manual will give quicker acceleration, the answer is the one fitted! (I think)
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wilvo

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Re: Diff keep or change?
« Reply #8 on: 25 October 2009, 18:14:35 »
no i know 3.0 will be quicker im just wondering if the ratio on 3.0 auto will give better accelleration than my 2.5 manual...
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tunnie

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Re: Diff keep or change?
« Reply #9 on: 25 October 2009, 18:17:19 »
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no i know 3.0 will be quicker im just wondering if the ratio on 3.0 auto will give better accelleration than my 2.5 manual...

Longer ratios of autos will hamper 0-60, but if you get a x-plod diff that would help.

Police autos have a shorter first ratio which aides 0-60, but you loose top end speed.
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Elite Pete

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Re: Diff keep or change?
« Reply #10 on: 25 October 2009, 20:48:57 »
Stick a set of 15" wheels and low profile tyres on it ;)
« Last Edit: 25 October 2009, 20:49:18 by Elite_Pete »
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Ian_D

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Re: Diff keep or change?
« Reply #11 on: 26 October 2009, 00:01:16 »
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Stick a set of 15" wheels and low profile tyres on it ;)
;D

Will the ratios be the same in both the 2.5 auto and 3.0 auto? ::) (starting to break a 2.5 v6 estate thats all!  ;))
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Diamond Black Geezer

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Re: Diff keep or change?
« Reply #12 on: 26 October 2009, 00:42:39 »
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Stick a set of 15" wheels and low profile tyres on it ;)

The man raises a fair point  :y Smaller wheels are a very headache-free way of improving accelleration.
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Matchless

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Re: Diff keep or change?
« Reply #13 on: 26 October 2009, 12:50:22 »
Can someone with access to TIS post up the V6 diff ratios please?

Tunnie, you have it the wron way around; a 2.5 manual fitted with a 2.5 auto diff goes like a rocket because the auto diff is lower geared (4.22:1 compared with 3.9:1 for the manual). Fuel consumption is higher though.

I cant remember the 3.0 ratios, I think the manual is 3.7 but dont know the auto.
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Mr Skrunts

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Re: Diff keep or change?
« Reply #14 on: 26 October 2009, 13:01:40 »
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Quote
o well can hope i suppose so what is best for accelleration? 2.5-3.0?

do i really need to answer that?  :-?


valid question.

2.5 manual V 3.0 Auto
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