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2wd rear beam + diff on a 4wd car

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Old Jun 9, 2007 | 02:22 PM
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Default 2wd rear beam + diff on a 4wd car

What do I need to fit a 2wd rear beem to an escort cosworth? --> does it work with the std. prop shaft?
I've a complete 2wd rear axle here and i'm thinking about upgrading my escort...
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Old Jun 9, 2007 | 08:57 PM
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Will fit straight on mate,the diff ratio is very slightly different at 3.64:1(4x4 is 3.62:1) but will not cause any problem........

Shafts and joints are a lot stronger in 2wd kit,so is a very good conversion..
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Old Jun 10, 2007 | 08:58 AM
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good news!
thanks!
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Old Jun 10, 2007 | 02:20 PM
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oh... i've forgotten something... i have some 3.92diffs here (2.0 sierra 4x4) -> is there a way to use the 3.92 gear in the 7.5" diff?
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Old Jun 10, 2007 | 04:08 PM
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it is almost certainly a 7 inch diff you've got there so you will not be able to use it in the 7.5 inch casing as it's all wrong

what you might be able to do it use the output flanges from the 7.5 inch in the 3.92 diff and then just use a small spacer to bolt up the diff to the beam (which works all the time)
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Old Jun 10, 2007 | 04:46 PM
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But surely thats alot of hard work fitting the 2wd rear beam just to still use the smaller 4x4 7" diff!

all that swapping and changing of the beam and output flanges etc, and then still using the 4x4 diff which is now mounted with spacers! the only real benefit after all that work is stronger flanges and driveshafts, when all it see's is 60% of the power anyway!
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Old Jun 10, 2007 | 06:24 PM
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i'm using a GT30R + 2,4L crank... so i need a quite good drivetrain... -> have a strait cut gearbox + "thin" front prop shaft (I think it's a group a item) + a "weldet" front dif --> more or less like a thick wall diff... lot af aluminium weldet on...
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