Front Diff Removal - Project LOKKA for 02> onwards

[Banshee]

Only way to tell if ratio is different is to mark up input shaft and diff casing and mark up drive shaft flange and diff casing.
Do one full revolution of input shaft and mark up where flange stops.
Do this on each diff and compare.
Not sure why ratio should be different from earlier models but you never know.

Means ripping mine off the motor :/ my mate is based in Farnborough otherwise I'd have used his as a test

Let's see what LOKKA come back with also

 

[solarman216]

Do not worry about ratios, if the complete diff fits stick it in, you will only be using it if on slippy stuff anyway so transmission wind up will not apply, But and this is the big BUT, I have a feeling there was a problem with Alexes front shaft that made taking one from a pre 2000 not to work, it could of been flange size/shape or shaft length, I cannot remember, but Alex should, Rick

 

[AlexD333]

Do not worry about ratios, if the complete diff fits stick it in, you will only be using it if on slippy stuff anyway so transmission wind up will not apply, But and this is the big BUT, I have a feeling there was a problem with Alexes front shaft that made taking one from a pre 2000 not to work, it could of been flange size/shape or shaft length, I cannot remember, but Alex should, Rick

I think it was the shape of the rubber inner boots (and likely the Internals) were a different shape, we tried to salvage a rubber boot off one of ricks motors to find out they were entirely different ..... Well... Close but no cigar... Even with ricks modding :thumb2

 

[Madmark]

It does seem that post 2000 did change but it'll be all down to the ratios and banshee looks like your the guinea pig for all us later t2s as you have one there so chuck it on and lets see as will order one asap once I know earlier one will fit

 

[elty001]

Only other option is to swap everything from the breaker.
Diff,drive shafts,hubs etc.

 

[solarman216]

I think it was the shape of the rubber inner boots (and likely the Internals) were a different shape, we tried to salvage a rubber boot off one of ricks motors to find out they were entirely different ..... Well... Close but no cigar... Even with ricks modding :thumb2

Ah remember now, well partly, we changed a CVJ and he would have had a new boot for it but I think we noticed that the inner boot was failing but found my inner boots were different, we need Banshee to get his front diff off and compare them on the ground, don't worry you can run with no front diff, I did on my last petrol after engine change as could not be bothered to put it back, Rick

 

[Banshee]

I've never been a Guinea Pig before, do I get a costume?

To my joy and annoyance I was awoke this morning at 4:20am by a Reply e-mail from LOKKA and they seem to know not much more than us, I really do feel like a Pioneer now :lol

Here's the reply;

Hi Zac,
Are you saying the outside looks the same, or the internals look the same?

We understand the 2 diffs are different. They may look the same from the outer, but the 1999 is a 4 pinion, the latter is a 2 pinion.

The center case is probably interchangeable, the part the Lokka fits into, so
you could swap out the centre ... just fit the new ring gear onto the older centre, and fit into the new diff. (assuming ratios are different)

If the ratios are the same, I guess you could just interchange the whole 'third member'!

If you need more help, just send me an email.

If you do interchange the centres, we would be interested in getting the 2004 centre housing and gears, the part/housing the Lokka centre fits into.
The 2 pinion one. We know of them, but do not have a sample.

Kind Regards
RJ
Lokka Support

 

[solarman216]

yep guinea pig you are, looks like it is the internals that are different, would not bother in that case with swapping the inner casing just put a Lokka in your pre 2000 diff and fit it, the 4 pinion diff is stronger than the 2 in any event, Rick

 

[Banshee]

yep guinea pig you are, looks like it is the internals that are different, would not bother in that case with swapping the inner casing just put a Lokka in your pre 2000 diff and fit it, the 4 pinion diff is stronger than the 2 in any event, Rick

It's already fitted :thumb2

So i presume if I fit that and then use the old driveshafts too? :nenau

I'm going to do Elty's test when I've got both off side by side so I can see if the ratios are different

 

[Banshee]

I was hoping bud would pop along and offer some wise words on this as he seemed well clued up on this sort of thing

Seems he's been inactive though for just shy of a month and he's gone red too

I hope we don't lose him, he was a fountain of knowledge like Rick, i'm still looking for an alternator from a QD32 block because of him :bow :lol

 

[elty001]

So it looks like it's all down to money saving on Nissan's design of the later diffs.
At least you have some clarity on why they only go up to 2000 models.

 

[Banshee]

So it looks like it's all down to money saving on Nissan's design of the later diffs.
At least you have some clarity on why they only go up to 2000 models.

I plan on just sticking the 1999 diff in, in place of my 04 one and see what happens :naughty

 

[solarman216]

It's already fitted :thumb2

So i presume if I fit that and then use the old driveshafts too? :nenau

I'm going to do Elty's test when I've got both off side by side so I can see if the ratios are different

as long as all the mounts are the same then yes go for it, with the two diffs on the ground it will be east to see if the drive shafts will be different as the distance between the two output flanges will be different, I would not mind betting that they are the same externally, Rick

 

[Madmark]

I was hoping bud would pop along and offer some wise words on this as he seemed well clued up on this sort of thing

Seems he's been inactive though for just shy of a month and he's gone red too

I hope we don't lose him, he was a fountain of knowledge like Rick, i'm still looking for an alternator from a QD32 block because of him :bow :lol

Look for one off an elgrand bud they use the 3.2 TD engine and plenty being broke

 

[Sweety]

If your worried about the ratio's being different fit the older rear axle as well then everything will match plus the older type of axle are much stronger to:thumb2

 

[rayf3262]

Another way to determine the ratio is to count the teeth on the pinion and crown-wheel.
eg. 8 teeth on the pinion and 35 teeth on the crown-wheel: 35/8 = 4.375:1

 

[Banshee]

as long as all the mounts are the same then yes go for it, with the two diffs on the ground it will be east to see if the drive shafts will be different as the distance between the two output flanges will be different, I would not mind betting that they are the same externally, Rick

Exactly what I plan to do Rick :thumb2

Look for one off an elgrand bud they use the 3.2 TD engine and plenty being broke

Yeah but they all want stupid money, I refuse to pay £100 for a second hand alternator

If your worried about the ratio's being different fit the older rear axle as well then everything will match plus the older type of axle are much stronger to:thumb2

I wondered how long it would be before someone mentioned doing that and I've got to admit BigBunny said I should do that when we were away in the peaks and to be honest I really wouldn't mind doing that :naughty

I have the one on the LWB and it looks solid enough, presume the only difference would be the rear prop length?

Another way to determine the ratio is to count the teeth on the pinion and crown-wheel.
eg. 8 teeth on the pinion and 35 teeth on the crown-wheel: 35/8 = 4.375:1

Top man Ray, I'll have a count

 

[Madmark]

Does your truck and your scrapper both have abs?

 

[Banshee]

Does your truck and your scrapper both have abs?

Yup :naughty

 

[Madmark]

Id swap rear axel then as our trucks have the Renault rear diff and not great id love to get hold of older one but not many have abs