Diff Dilemma

[Anonymous]

AAAArrrrrrgggggg

I hate diffs
Everyone I look at is the small 8 bolt

I have been looking HI and low for TE 4cyl diff but every diff that I find is a bl@@dy 8 bolt I swear that TE's came with a 9 bolt whether they were 4 or 6 cyl
Its driving me bonkers :splat:
All the wreckers say that they are the same appart from the flange , this is what I thought
X can you please shed some light on this before i spit the dummy and get a 9"

 

[xctasy]

There are 4 kinds of diff. The early 70-73 1600 had a Type A Escort style Spud/Lift out diff about 6.5" crown wheel, 3.89 or 4.11:1 gears. Piece of crap.

The 2000cc before mid 1972 had a Type B Salibury (7" crown wheel or so), found in all NZ and Pommy 2.0 Cortinas from 1970 to 1983, all German Capris 2.0, 2.3, 2.6, 2.8i. It has 3.75 or 3.45:1 gears, and is a leaf sprung Atlas varaint which was used in Capri V6's and in Vuaxhall Chevette rally cars. There are a bunch of strong ratios, 3.22, 3.09:1, and a Limited Slip Diff option for the Capris. The diff isn't that strong, but it can cope with a mild 302 in a light car.

The Borg Warner 78 ( 7 7/8" crown wheel) is a Falcon diff, found on the first XR's in 1966, and used until recently in the AU III's. I think the utes use it still. It has had 7.625 and 7.7875" crown wheels, 25 or 28 splines, has been used in Cortina TC, TD, TE's but not TF's, used in the P76, Centura, Valiant, Commodore from 1984 to 1996, the Aussie Pintara, Skyline. In 1991, it became a BTR diff as Borg Warner got a name change.

The TF Cortina used a Borg Warner diff, common to Toyota Coronas, Bluebirds, Sigmas. It ran Falcon style ratio's in the six cylinder version with 2.92, 2.77 ratios. I haven't had a look at the Gregories TFCortina handbook in years, but I think the Cortina four had either 3.42, 3.32, gears.

My mate had a US Capri/Mustang V6 in his Pommy TD Station Wagon. He ran what he said was a 3.32 ratio crown wheel and pinion in the stock Type B Salibury diff. It could be that the Salisbury is the same as the TF Cortina diff. I don't know!

Your best bet is getting a TE 4 diff. I don't know how many bolts it has, but I do have the 3.7:1 centre under my house. And a 3.23:1 Falcon centre. Both diffs are only 7.625", not 7 7/8 ths.

The second best option is to just get a 31 spline, drum brake, LSD 3.9:1 diff from the latest rear drive Toyota 3.0 Diesel Hilux. I'd lend you mine, but my boss would want it back!

 

[Anonymous]

So your saying the 4cyl TE housing is the same as the 6cyl housing This is a very good thing

I have looked at about 4 4cyl TE's today and they all had the small diff but they were all late model TE's

Its got me realy confused
When I got my first TE the owner told me that it had 3.7 gears and when I had it out o the car it checked out to be 3.7 and the fairlane hemisphere slipped right in with the 3.7 crown fitted I thought it was no biggy as corty's all had the same diff
Now after reading your post about the TF diff my world has been turned upside down and Im beginning to think that my old turbo corty diff was not the STD unit

X do you know how many bolts are on the backing plate of your 3.7 diff
and how wide the backing plate is (should be around 230mm side to side)
TF is 210mm

 

[SONNY]

i have 3 going 6cyl te's and a tf diff in my shed,i'll have a look when i get some time.i though there was no difference between all mine but i'll check and see what i come up with.the only thing is the tf my diff came out of was a 4cyl but when i bought it it was a 6cyl so i can't besure what diff it had.

 

[SONNY]

ok i had alook at my cars,i bought another te giha the other day so i have 4 complete cars and 1 diff in the shed.i have a 77,78,79 and 80 model 6cyl te's and they all have 9 bolts on the backing plate and are all the same the one in my shed came out of a 81 tf (it was a 4cyl converted to a 6cyl).i have a feeling its a te diff as its the same to me (9 bolt backing plate
) and it measures the same as the rest,which is around the 230mm as you said.oh there all 2.92 ratio