Ripped off - 3.54's instead of 4.11s!!

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Originally Posted by McDisco

I would have thought that if I had a 4.11 in the front and a 3.54 in the back that you would notice...

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You'd notice alright... Wouldn't take long for things to go bang if you had this setup.

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Originally Posted by McDisco

Know anywhere to get that done?

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hiline 4wd do it, i;d say cammo offroad prob be able to do it along with other diff shops with half a clue. ashcroft site has some good pics on it.

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Originally Posted by McDisco

I would have thought that if I had a 4.11 in the front and a 3.54 in the back that you would notice... If it was a 4.11 and a 4.10 then maybe not.

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transfer case would definately have something to say about differant ratios front to rear! 4.11 to 4.1 not so much, you'd have that much variation with tyre wear!

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Originally Posted by McDisco

Nah, if Im going to have to replace it I am going to upgrade it. The extra gearing will help out and improve drivability and fuel consumption.

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How is going for a much lower diff ratio going to improve fuel consumption when the engine will be revving much higher at a given speed?

Dave.

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Originally Posted by Mr Whippy

How is going for a much lower diff ratio going to improve fuel consumption when the engine will be revving much higher at a given speed?

Dave.

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Cause most of the driving I do is low range work and not highway driving. The engine won't have to work as hard and will be using the mechanical advantage of the ratios rather than the power of the engine.

When I had my D2, fuel consumption went up when I put the 32s on it as the engine had to work harder to turn the wheels. It didn't have the mech advantage of the right ratios. I would imagine, in theory, if I could find an absolutely flat plain, with no hills and no wind resistance and get up to cruising speed and keep it there, then the bigger tyre mays deliver better consumption...but thats not likely to happen. :)

And 4.11's aren't a "much lower" ratio when you run 35s. They will restore the ratios back to something close to factory so the rangie should drive much better.

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Originally Posted by Mr Whippy

How is going for a much lower diff ratio going to improve fuel consumption when the engine will be revving much higher at a given speed?

Dave.

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It's all relative I guess Dave.

With 4.11's and 35's, it brings gearing back to standard/factory, and I can confirm that at 100km/h my tacho sits at approx. 1700rpm - 1800rpm.

So, with 3.54's and 35's, it will run lower rpm's, but to drive at 100km/h I'd likely need to be in 4th gear, therefore upping the rpm. I'm guessing that it would drive like a slug through all the gears leading up to 5th too.