Are The Diffs Diff?

[missgoldie]

Hello Folks,

 

didn't gain any knowledge last time I asked this, so I'll rephrase it. Could anyone PLEASE tell me whether the diffs fitted to KE70's have different ratios for 4 and 5 speed gearboxes? If so, can you live with a 5sp mated to a 4sp diff?

Appreciate any insights before start operating. Ta, MG.

[TRD ke70]

If they Au KE70's they should have either a 4.1 or 4.3 ratio.

I think the 4.3 came in the sedan and the 4.1 in the auto(could be wrong)

 

If it is a Jap center, it should have a 3.9 ratio(there may be a 4.1 as well)

I think the panel vans and wagons had this ratio.

easy to tell, if the center pulls out the front, it's a Jap diff.

[missgoldie]

If they Au KE70's they should have either a 4.1 or 4.3 ratio.

I think the 4.3 came in the sedan and the 4.1 in the auto(could be wrong)

 

If it is a Jap center, it should have a 3.9 ratio(there may be a 4.1 as well)

I think the panel vans and wagons had this ratio.

easy to tell, if the center pulls out the front, it's a Jap diff.

[missgoldie]

Thanks for that. Yes I have the Jap diff with the circular plate for attaching tail shaft. I believe the Borg Warners are square. If they didn't change the ratios for the 5sp box then I guess It's safe to do the same and not loose too much mid range pull. Ta MG.

[altezzaclub]

Actually the autos have the 4.3 and the manuals have the higher gearing of the 4.1. The 5speed will not affect anything except 5th, as its just a 4spd with an overdrive fitted.

 

We have the auto diff with a 5speed, it cruises nicely at 3000-3400rpm, which is just around 100kph. 5th only drops the revs a few hundred rpm, so we change down before 3000rpm going up a hill or it makes no difference as the poor little 4K dies...

 

It would haul the manual diff no problem, but we had an auto car to start with.

[prosbo]

i got a 82 ke70 flat front 4k, I'm 100% sure my gearbox was changed to a earlier 5speed one since they cut the hole foward about 2-3 inch ( correct me if I'm wrong but early GB were shorter?)

 

but anyway I'm not sure if the diff has been changed aswell but its a 3.89 ratio

 

build plate shows

model:ke70-e-kdfa

engine:4kc-1290-ml

frame:ke70-e-9720919

color/trim: jv (yay beige!) ua (guessing poo brown?)

built jun 82

 

if any1 can decode this would be great

 

cheers

T

[TRD ke70]

The earlier 5 speed is the same box pretty much, just a different tail housing.

All you need to do is change the rear housing.

And a little bit of useless information, the shorter 5 speed was in production longer as they were fitted to the RWD starlets up to 86-87.

 

Thanks Mr Alt, yeah i couldn't remember which ratio was the auto.

[altezzaclub]

This is how much further forward the flat-front 5speed fitted in our '83 slanty. Only a couple of inches...

 

http://www.ke70.com/forum/index.php?showtopic=1493&hl=

[prosbo]

this is where mine sits in a manual jun 82 ke70.

I'm sure it was original manual since it has the clutch cable cup on the fire wall,

not sure if it was 4spd or 5spd

 

 

cheers

T

[missgoldie]

this is where mine sits in a manual jun 82 ke70.

I'm sure it was original manual since it has the clutch cable cup on the fire wall,

not sure if it was 4spd or 5spd

 

 

cheers

T

Thanks all for the KE70 4sp to 5sp conversion info. I'll go ahead and drop in the lower milage engine complete with 5sp box. I gather tail shaft length can be got around with a bit of mix and match. Looks like tail shaft originally on the 5sp in the bent wagon will do the job anyway. Cheers, MG.

[rhys2229]

i bought a auto diff and its 4.11 realised my wagon diff is also a 4.11 raito though :bash: