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rear axle replace 

 

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 Post subject: rear axle replace
Posted: Sun Aug 21, 2005 9:49 pm 
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Hey guys

Just wondering if anyone can tell me how much the fuel economy will change if I swap the rear axle on my EF Falcon GLi for an XR6 rear axle?
Am I gonna get better acceleration out of this? It just seems the gear timing is letting me down a bit with the 5-speed manual

 

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Posted: Sun Aug 21, 2005 10:28 pm 
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I'm about to do the same on my EL.

 

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 Post subject: Yep!
Posted: Sun Aug 21, 2005 11:07 pm 
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...a normal falcon 6cyl diff has a lower ratio than the xr6....3:08 vs 3:63 I think so yeah take off should be notably different n u shudnt be in 1st gear very long!
Des.

 

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Posted: Sun Aug 21, 2005 11:27 pm 
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ef falcon probably has 3.23:1
xr6 is 3.45:1.
i wouldn't mind one either, mine is also manual.

 

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 Post subject: i have one for sale
Posted: Mon Aug 22, 2005 1:24 am 
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:wink: i have one for sale :wink:


FOR SALE one complete differential BTR to suit EF or EL falcon

differential ratio 3.45:1 Limited Slip Differential

serious enquiries only

complete axle to axle

mb : 0438 255 176


http://www.fordmods.com/forums/viewtopic.php?t=13876

cya

 

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Posted: Mon Aug 22, 2005 6:59 pm 
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You will probably use about .5l more per 100km. I still get 8.2l/100km on the freeway in my EL Ghia (now manual), so its not that bad for the extra go.

BTW, 1st with a 3.45 will see you about 60km/h banging the redline.
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Posted: Mon Aug 22, 2005 8:36 pm 
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arm79 wrote:
You will probably use about .5l more per 100km. I still get 8.2l/100km on the freeway in my EL Ghia (now manual), so its not that bad for the extra go.

BTW, 1st with a 3.45 will see you about 60km/h banging the redline.


For a manual. For autos a 3.45 and 1st will get you to 86.

 

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Posted: Mon Aug 22, 2005 9:29 pm 
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data_mine wrote:
arm79 wrote:
You will probably use about .5l more per 100km. I still get 8.2l/100km on the freeway in my EL Ghia (now manual), so its not that bad for the extra go.

BTW, 1st with a 3.45 will see you about 60km/h banging the redline.


For a manual. For autos a 3.45 and 1st will get you to 86.


Yes for a manual. I thought the topic was concerning manuals, so I posted as such.
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Posted: Mon Aug 22, 2005 11:10 pm 
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wasn't pickin gon you, just adding, for anyone with an auto reading. And face it, the vast majority of EF/ELs are gonna be autos.

 

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2006 BF GT-P in Ego, mods. 293rwkw - 12.427@109 - 0-1000m 24.838@221

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Posted: Tue Aug 23, 2005 1:17 am 
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arm79 wrote:
You will probably use about .5l more per 100km. I still get 8.2l/100km on the freeway in my EL Ghia (now manual), so its not that bad for the extra go.

BTW, 1st with a 3.45 will see you about 60km/h banging the redline.


Yeah cheers, If its not that bad.
My mate was telling me that I wouldn't have as good cruising speed coz it would be working on higher revs say when highway or freeway driving. Possibly thinking of six-speed gearbox but would be costly

 

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Posted: Tue Aug 23, 2005 2:14 am 
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In an auto, my 100km/h cruising rpm is about 2050.

Going to a manual upped that to about 2150. Not much more, just makes cruising a little more noisier. But fuel economy was unchanged, perhaps a little better.
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Posted: Tue Aug 23, 2005 10:23 am 
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Interesting how gearing works, because of the gearing the engine isn't working as hard, so therefore the ECU adds less fuel, even though RPMs are up.

Should also be a smoother ride under cruise control too. Again because the RPMs are already there, a downshift for a hill won't be needed as often.

 

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1998 DL LTD in Sparkling Burgundy, daily, 302W, stereo, slow - 97.5rwkw
2006 BF GT-P in Ego, mods. 293rwkw - 12.427@109 - 0-1000m 24.838@221

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