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Posted: Tue Nov 03, 2009 9:45 pm
by El_Freddo
twilightprotege wrote:question - does an EA gearbox with EJ internals have the same length as an EJ gearbox? ie what i'm thinking of doing is putting EJ AWD internals in my EA box, shortening the driveshaft and using that for a while. then when i get an EJ20turbo, i'll just move the internals back to the EJ box and use it.
thoughts?
It would be far easier to do what Andrew's suggest below if you're going to be dropping an EJ in later down the track:
AndrewT wrote:Although adaptor plates work perfectly fine - tried and tested even on EJ20turbos without any issues at all, not sure why you'd bother messing around to avoid one. It's not hard to get a std AWD cased gearbox to fit in an EA car, just shorten the shifter linkages, shorten the tailshaft and mod the crossmember abit. You can use adaptor plates in reverse (fit EA engine to EJ gearbox) altho most people use them to fit EJ engine to EA gearbox.
It's also alot easier to just swap your rear diff for one that matches the gearbox rather than customise the gearbox to match your rear diff.
Second that one!
The reason I did my gearbox into an EJ casing was to avoid an engineer's report for the adaptor plate, plus it was cheaper for me to do it this way too - and I like to get my hands dirtys/look into new things that I haven't explored mechanically. I also needed as much room up front as possible...
Cheers
Bennie
Posted: Tue Nov 03, 2009 9:47 pm
by AlpineRaven
twilightprotege wrote:question - does an EA gearbox with EJ internals have the same length as an EJ gearbox? ie what i'm thinking of doing is putting EJ AWD internals in my EA box, shortening the driveshaft and using that for a while. then when i get an EJ20turbo, i'll just move the internals back to the EJ box and use it.
thoughts?
You can use EJ main internals in EA box, it'll fit straight in without problems.
The main housing (including bellhousing) is different in length, as EA box is 12mm shorter around where bellhousing is. I'll upload a picture of EA box tomorrow night.
Cheers
AP
Posted: Wed Nov 04, 2009 9:15 pm
by twilightprotege
bennie that's why i was thinking of putting the ej internals in my ea box - cheaper, so long as i can use the shortened driveshaft when i go to a complete ej and and box setup
i've got no problem changing the gearset myself. cant be any harder than my mazda fwd gearbox
Posted: Fri Nov 06, 2009 8:12 am
by steptoe
is the AWD bit just in the back end? If so can you 'just' pull the L box down enough to stick the EJ rear section on?
Posted: Fri Nov 06, 2009 11:18 am
by AlpineRaven
steptoe wrote:is the AWD bit just in the back end? If so can you 'just' pull the L box down enough to stick the EJ rear section on?
Yes thats correct. The AWD Part is inside the transfer case. And it can mount behind on EA Casing. But you cannot use EA internals with EJ's AWD because the pinion shaft is completely different between EA & EJ.
Cheers
AP
Posted: Fri Nov 06, 2009 9:56 pm
by AlpineRaven
AlpineRaven wrote:You can use EJ main internals in EA box, it'll fit straight in without problems.
The main housing (including bellhousing) is different in length, as EA box is 12mm shorter around where bellhousing is. I'll upload a picture of EA box tomorrow night.
Cheers
AP
This is a picture (sorry its poor quality as taken from camera phone) of EA gearbox.. Now you can see the difference between EJ & EA.
Cheers
AP
Posted: Fri Nov 20, 2009 4:13 pm
by El_Freddo
Also to add to the mix is the fact that the AWD pinion shaft passes THROUGH the lower gearset shaft. The EA's pinion shaft is solid and shares the same shaft with the lower gear set so there is no interchangability of the AWD rear casing to the EA gearsets OR of the pinion shafts to retain the EA ratios while bolting up the AWD rear casing. Make sense?
Also steptoe, have you updated your first post with what you've foundout through this thread?
Cheers
Bennie
Posted: Sat Nov 21, 2009 1:20 am
by steptoe
no is too short an answer
Posted: Sun Sep 12, 2010 11:07 pm
by El_Freddo
Hey, can anyone post up the ratios of each gear for the EA 3.7 ratio box, EJ 3.9 (gen 1) box and EJ 3.7 (gen 2) box?
Just for reference
Cheers
Bennie
Posted: Mon Sep 13, 2010 8:48 am
by AlpineRaven
Gen 1 3.9 diff Aus Del model
1st 3.545
2nd 2.111
3rd 1.448
4th 1.088
5th 0.871
Rev 3.416
Final Drive 3.9
Low Range 1.19
Gen 2 Aus Del model (got this information from Subaru Australia)
1st 3.545
2nd 2.111
3rd 1.448
4th 1.088
5th 0.871
Rev 3.416
Final Drive 3.7
Low Range 1.19
L Series 3.7 should be the same as above I believe.
Cheers
AP
Posted: Tue Sep 14, 2010 1:28 pm
by El_Freddo
Ok, found this on the super reliable wikipedia:
Stock common L series gearbox:
Gear Ratios: 1st 3.545 2nd 1.947 3rd 1.366 4th .972 5th .780, Rev 3.416 Low Range 1.59
L series AWD lockable centre box ratios:
Gear Ratios: 1st 3.545 2nd 2.111 3rd 1.448 4th 1.088 5th .871, Rev 3.416 Low Range 1.196
Do these seem right?
Cheers
Bennie
Posted: Tue Sep 14, 2010 1:42 pm
by AlpineRaven
El_Freddo wrote:Ok, found this on the super reliable wikipedia:
Stock common L series gearbox:
Gear Ratios: 1st 3.545 2nd 1.947 3rd 1.366 4th .972 5th .780, Rev 3.416 Low Range 1.59
L series AWD lockable centre box ratios:
Gear Ratios: 1st 3.545 2nd 2.111 3rd 1.448 4th 1.088 5th .871, Rev 3.416 Low Range 1.196
Do these seem right?
Cheers
Bennie
The L Series AWD box is RX Turbo Box specs..
But the above one seems to be right.
Cheers
AP