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| gogetta |
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1. r all ford housings the same (EA-EL)?
2. can all diff centres be swapped around (I know about 25/28 spline differences so dont confuse) the 3.45/3.08 question... 3. specifically can a lsd centre with 3.45 gears fit into an ef/el 3.08 diff housing... seems to be a lot of conflicting info out there...
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| gogetta |
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it seem that the ef/el 3.08 diff is actually a BW 75 series......while all the others eg ea-ed, ef/el 327 345 r 78 series..
right.. what about the 277 292 ea diffs r these 75 or 78? why would ford change the series like that....or is it to do with the compatablity of ratios..
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| data_mine |
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I changed my diff recently from a 3.08 to a 3.45 and took pics.
 
 
Spot the difference, no neither can I (apart from one's old and dirty and unpainted). Oh, don't forget to change your speedo sender too. 
_________________ 1998 DL LTD in Sparkling Burgundy, daily, 302W, stereo, slow |
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| Spider_GT |
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hmmm do they do fit
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| kezz |
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sorry to hijack your thread gogetta but im looking to put a slipper in my car soon currently have a 3.08ss. what ratio could i go to without any hassles ie a straight swap? thanks boys i got no idea bout diffs
_________________ Kezz's 5sp Box Car ---> RPD enhanced with a bunch of other stuff |
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| Brett 4777 |
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basically 3:08 can fit 3:23 and 3:45 gears
BUT you have to machine the shims and bearing cups to make them fit quite a bit of work to get right. whereas a 3:23 housing will take 3:45 gears no problems at all internally the 3:08 is smaller hope this helps |
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| fairmont1998 |
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Also remember the EL housing has different mounting holes and the watts link pin is different. If anyone wants to put a pre EL housing into an EL it is a lot of work.
_________________ 2008 WQ Fiesta XR4 |
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| Nicko |
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you can put an ef diff into an el but you need to change upper arms and handbrake cable!
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| fairmont1998 |
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But then you end up with EF geometry, and EL is better.
_________________ 2008 WQ Fiesta XR4 |
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| kezz |
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Brett 4777 wrote: basically 3:08 can fit 3:23 and 3:45 gears
BUT you have to machine the shims and bearing cups to make them fit quite a bit of work to get right. whereas a 3:23 housing will take 3:45 gears no problems at all internally the 3:08 is smaller hope this helps so if i was to change diffs would it be better to do a straight axle swap?
_________________ Kezz's 5sp Box Car ---> RPD enhanced with a bunch of other stuff |
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| Brett 4777 |
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your axles will still fit
but complete diff with axles is always easier to fit |
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| data_mine |
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Brett 4777 wrote: but complete diff with axles is always easier to fit
Yep, and no messing around with ensuring you install the centres properly (re: shimming and such).
_________________ 1998 DL LTD in Sparkling Burgundy, daily, 302W, stereo, slow |
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| gogetta |
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data_mine : even tho the housings look basically the same its the internal differences that cause the problems.......
I think if u check the markings on the pinions and crown and carrier etc u will find 75 series (0575) markings on the ef/el 3.08 diff, the 78 (0578)..this will all be inside the housing... 75,78 refers to the diameter of the crown(I think) in inches...75=7.5 inches 78=7.75 inches so we're talking .25in (6.5mm) difference....f**k all difference to the casual observer... so im trying to figure out which diffs r 75 and which r 78....... as far as I can tell - 75 : ef/el 3.08 78 : ef/el 3.27/3.45 eb2 3.27/3.45 unknown - ed 3.08 ea all can anyone verify...
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| gogetta |
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Brett 4777 wrote: basically 3:08 can fit 3:23 and 3:45 gears
BUT you have to machine the shims and bearing cups to make them fit what exactly has to be machined? pinion bearing cups/shims or carrier? or both?
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| falconea |
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Remember that EF/EL have a drum hand brake and EA/EB/ED have diskbrake operated handbrake. So hand brake cables are different etc, also brake pressure line comes to the center of the diff and runs to each brake EF/EL run brake line to one side and across the axle to the other. So you have to run a different brake line from the front of the car.
Another thing brackets need to be fitted to chassis for h/b cable and center mounted h/b in cab needs floor mods.
_________________ Drive safe, arrive alive
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