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Gear ratio's... EA T5 into EF? 

 

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 Post subject: Gear ratio's... EA T5 into EF?
Posted: Sat Jul 19, 2008 1:56 pm 
Parts Gopher
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Hi guys just wondering if the EA's had different diff ratio to the EF's?
and do the EA gear box's have different ratio's to the EF 5 speed box's?

I have an EA T5 and am thinking of using it in my EF when I convert it to manual, but I'm not sure what the ratio's are going to be like... I think I have read that the EA had a diff ratio of about 2.92:1? while the EF's had something like 3.7:1? so putting a EA 5 speed into an EF will only see ~40kmph in 1st gear or something?

The EA gear box I have now is 270,000km's old but its never had any problems and is still a good box, which is another reason I want to use it because I know its in good condition and hasnt been floged.

Any help/opinions would be good :)
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 Post subject: Re: Gear ratio's... EA T5 into EF?
Posted: Sat Jul 19, 2008 2:02 pm 
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JWM wrote:
Hi guys just wondering if the EA's had different diff ratio to the EF's?
and do the EA gear box's have different ratio's to the EF 5 speed box's?

I have an EA T5 and am thinking of using it in my EF when I convert it to manual, but I'm not sure what the ratio's are going to be like... I think I have read that the EA had a diff ratio of about 2.92:1? while the EF's had something like 3.7:1? so putting a EA 5 speed into an EF will only see ~40kmph in 1st gear or something?

The EA gear box I have now is 270,000km's old but its never had any problems and is still a good box, which is another reason I want to use it because I know its in good condition and hasnt been floged.

Any help/opinions would be good :)


hi
the ea box has a lower 1st,2nd and a slightly lower 5th..
and the ea diff ratio was 2.92.
and a std ef should be 3.08 or 3.23.
only xr and ghia model had 3.45
none came out with 3.7

im running a ea box with 3.27 diff ratio and it gets 55km out of first@5500 rpm..
it will only get 40km out of first if you have 3.9 or 4.11
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Posted: Sat Jul 19, 2008 2:40 pm 
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EA T5

1st: 3.50:1
2nd: 2.14:1
3rd: 1.39:1
4th: 1.00:1
5th: 0.78:1

EB2-EL T5 (6 cyl)

1st: 3.25:1
2nd: 1.99:1
3rd: 1.29:1
4th: 1.00:1
5th: 0.72:1
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Posted: Sat Jul 19, 2008 2:51 pm 
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Ah ok sweet thanks for the help, thats everything I wanted to know :)
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Posted: Sat Jul 19, 2008 7:27 pm 
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i have a EA T5 in my EF, still have the standard 3.08 diff. 1st is short enough, wouldnt want 3.9s lol.

 

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Posted: Sun Jul 20, 2008 2:37 pm 
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is the ea box a direct bolt in job to ef/el or is the input shaft different

 

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Posted: Sun Jul 20, 2008 5:14 pm 
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stoj79 wrote:
is the ea box a direct bolt in job to ef/el or is the input shaft different


its a direct fit mate input shaft is the same...
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Posted: Mon Jul 21, 2008 4:38 pm 
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sweet as so being thats its taller in the first few gears it woudl be liek goin from 3.45's to 3.7's in comparision to the ef/el box is that about right or not that dramatic

 

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Posted: Mon Jul 21, 2008 4:44 pm 
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stoj79 wrote:
sweet as so being thats its taller in the first few gears it woudl be liek goin from 3.45's to 3.7's in comparision to the ef/el box is that about right or not that dramatic


well you mean shorter..lol (the higher the number the shorter the ratio)
yes.
if you have a ea box fitted and you have 3.27 diff your 1st and 2nd will be aprox the same as a ef 5 speed with 3.45.

same as ea box with 3.45 1st and 2nd will be like ef box with 3.77.
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Posted: Mon Jul 21, 2008 5:10 pm 
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Yeh that lol

Well thats cool then bit more fun down low.....

 

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Posted: Mon Jul 21, 2008 5:20 pm 
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EA ratio's are great...... just make sure you got LSD and really good tyres on the rear
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Posted: Mon Jul 21, 2008 5:27 pm 
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lsd's still good well for now still does doubles but not donuts clutches are worn and who said anything about me wanting good tyres might just want crappers on the back to go drifting with lool

 

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Posted: Mon Jul 21, 2008 7:09 pm 
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Damo wrote:
EA T5

1st: 3.50:1
2nd: 2.14:1
3rd: 1.39:1
4th: 1.00:1
5th: 0.78:1

EB2-EL T5 (6 cyl)

1st: 3.25:1
2nd: 1.99:1
3rd: 1.29:1
4th: 1.00:1
5th: 0.72:1


sorry to take the thread slightly off topic, damo, you wouldnt happen to have the gear ratios for a 4speed auto in there would you?

 

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Posted: Mon Jul 21, 2008 10:47 pm 
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...
i do... :)

1st=2.39
2nd=1.45
3rd=1.00
4th=0.68

rev=2.09
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Posted: Mon Jul 21, 2008 11:19 pm 
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cheers troy.

and holy s**t first is tall!! :lol:

 

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