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Author Topic: Diff with lower ratio than 3:45  (Read 4061 times)

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dieseld4

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Diff with lower ratio than 3:45
« on: 17 March 2012, 11:43:36 »
Hi, Does anyone know if you can get a lower ratio diff than a 3:45, even in a old carlton/senator?
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tigers_gonads

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Re: Diff with lower ratio than 3:45
« Reply #1 on: 17 March 2012, 11:46:01 »
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dieseld4

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Re: Diff with lower ratio than 3:45
« Reply #2 on: 17 March 2012, 12:06:14 »
Yeah I have seen that, Thanks, I still want a diff lower than 3:45??
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feeutfo

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Re: Diff with lower ratio than 3:45
« Reply #3 on: 17 March 2012, 12:28:27 »
Lowest available is 4.22:1
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doz

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Re: Diff with lower ratio than 3:45
« Reply #4 on: 17 March 2012, 13:13:44 »
Throw lower profile tyres on it makes a good difference. I did this to my Gsi Carlton on a Marham track day it was bloody good. Loads of punch out of the corners and just reving out in 5th on the long straight. Which was fun.
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dieseld4

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Re: Diff with lower ratio than 3:45
« Reply #5 on: 17 March 2012, 13:59:32 »
Sorry, I mean a higher ratio, like a 3.1 or something like that, I think I read somewhere that the opel omega 2.5dti has a 3:22, so something like that might be ok but hard to get in the uk. So maybe maybe a diesel carlton??
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feeutfo

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Re: Diff with lower ratio than 3:45
« Reply #6 on: 17 March 2012, 14:01:26 »
Is this for economy?
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dieseld4

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Re: Diff with lower ratio than 3:45
« Reply #7 on: 17 March 2012, 17:34:12 »
Kind of for economy. I have fitted a 6 speed to a td, but it is very low geared, it go's like f**k  but at 2000rpm in 6th it is only doing 50mph, I havn't the car on the road yet but I imagine it would be realy sore on fuel
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feeutfo

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Re: Diff with lower ratio than 3:45
« Reply #8 on: 17 March 2012, 17:51:36 »
Christ I should think it does go like f*ck ;D

What was the 6speed box from?
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2woody

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Re: Diff with lower ratio than 3:45
« Reply #9 on: 18 March 2012, 22:11:36 »
3.45 is definitely the lowest in the range.
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feeutfo

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Re: Diff with lower ratio than 3:45
« Reply #10 on: 18 March 2012, 22:18:28 »
Ok, confused now.
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2woody

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Re: Diff with lower ratio than 3:45
« Reply #11 on: 18 March 2012, 22:20:44 »
lowest-revving
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feeutfo

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Re: Diff with lower ratio than 3:45
« Reply #12 on: 18 March 2012, 22:27:33 »
Ok, lowest gear being first. Highest gear being 5th. :)

4.22:1 gives 4.22 revolutions of the drive shafts per single rev of the prop shaft.
So he needs the opposite of that.

Although I suspect with this gear box the op will need something nearer 2:1 at a guess.
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2woody

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Re: Diff with lower ratio than 3:45
« Reply #13 on: 18 March 2012, 22:33:31 »
the lowest numerically in the Omega A / Omega B / Monza / Carlton type is the 3.45 I'm afraid.
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feeutfo

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Re: Diff with lower ratio than 3:45
« Reply #14 on: 18 March 2012, 22:40:56 »
Modifiable?
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