richfitz75

what would the standard ratio be for a ef futura?

RAVEN

I Think 3.08

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jas24zzk

2.75, 2.92, 3.00, 3.23, 3.45

Take your pick.

Climb under the car, and clean the tag attatched to the filler bolt. It will tell you whats in it.

Jas

Ghia5L

EF Futura (open wheeler diff) should be 3.08 as Raven said.

There's a possibility of it being 3.23 if it's LSD (maybe... higher spec EFs got this ratio with LSD)

-Dave-

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jas24zzk

Let me see,
the borgwarner fitted to these can come in several versions....
There is obviously, single spinner, and then LSD.
Then there are 2 crown wheel sizes.

Then there is 2 pinion and 4 pinion.

And somewhere there is approx 15 Standard ratio's.

Then you can also add in the ratios used by Holden who run the same diff!

Check the bloody tag and stop guessing!!!!!!

Jas

richfitz75

lol i would have checked the ratio but diff is on ebay was just curious.the bloke is to lazy to look lol

Ghia5L

lol best advice within the thread!

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jas24zzk

Glad you took the comment with a grain of salt.

But sometimes to be clear, one must be blunt

Jas

Ghia5L

Hmmm come to think of it, to check the tag is to assume that the internals haven't been played with... My 3.27 tag isn't really telling the truth hehe

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jas24zzk

No thats why you inspect things carefully!

And if you think its been open, and don't want to believe the tag, then open it!
Count the teeth on the crown and pinion.

Crown divided by pinon= ratio eg. 39 tooth crown 10 tooth pinion
39/10= 3.9:1 not bloody hard :)
Jas