TD6 Manual Gearbox Conversion... Is it possible???

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Originally Posted by garrycol

Have I missed something - why not a BMW box and bell housing that bolts straight up to your engine as was discussed originally.

Garry

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Availability mostly. The manual version of the X5 was a very rare beast in Aus. I have called and emailed quite a few places, and I have only managed to find one box - condition unknown for nearly $3K. It was out of a petrol version which will bolt straight up I think, but I can't find any technical specs on them, so I don't know if it is the same box they used on the diesel, and if it is strong enough.

Still got a couple of irons in the fire on these, so we will see.

6 speed out of a D3 is too expensive, and I'm not convinced the R380 would be the best solution. There are probably many here that have had no problems with these, but I have friends that have had personal experience with them... If I end up doing all this work, I want a bullet proof solution.

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Originally Posted by rovercare

h150 you would use, definately not an r151

h150 is what is behind the 1HD FTE

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Thanks for that - are there known issues with the r151? The h150 looks a lot beefier - I am assuming this is a stronger box?

Cheers - Gav

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Originally Posted by bacicat2000

Thanks for that - are there known issues with the r151? The h150 looks a lot beefier - I am assuming this is a stronger box?

Cheers - Gav

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Yes, 151 not a great box at all, H150 are the goods

Garry is a purist, he is always swayed to stay "brand loyal", R380, even late, are stretched behind a chipped TD5

I think the dramas with your conversion will be attaining the factory look, centre console, gear boots etc

Thanks. The interior finish is a bit further down my list, but I agree, this will be hard to get looking right, and getting the shifter in the right position will be difficult. I'll figure that bit out once I know I can make a box fit.:p

Found a good online parts resource for BMW parts. It only lists one crankshaft part number for both the auto and manual versions so there should be a recess for the spigot bearing.:)

Can get a brand new flywheel if needed for less than $700 if I can't get a secondhand unit. I was thinking of using this regardless of what box I use. If I use a non standard box, then I only need to modify the flywheel to suit a different clutch. Starter issues are then also sorted.

Edit - just found I can get a remanufactured gearbox out of Europe for about €2000. Wonder what that would be landed on my door step... I can't seem to find one over here...

Went around to where the car is at and poked my head under the car while the trannie is still out. The crankshaft does have have provision for a spigot bearing, so I can put that one to bed.

Measured the trannie so I can make sure the manual gearbox will be the same length. Auto is 665mm long, so I just need to find out what length the manual box is.

As these boxes are readily available out of Europe, I think I will go with that. Just trying to get an exact cost on what I can land a flywheel and box here for.

The only other anomily I have found is that BMW list the transfer box as a NV125, not the NV225 that is listed for the RR. I need to find out if the NV225 box bolts up the same, and has the same input spline.

Once I have that info, I would be almost ready to proceed, apart from finding out what the electronics will think of all this, and waiting for my bank balance to recover...:p

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Originally Posted by bacicat2000

As these boxes are readily available out of Europe, I think I will go with that. Just trying to get an exact cost on what I can land a flywheel and box here for.

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Box and flywheel - $3000 2000euros + estimate for flywheel.
Shipping for 60kg - $450 (TNT) - adjust for actual weight.
Customs import duties - $150 (5% of goods)
GST $360 (10% of Customs Duty + Shipping + Cost of Goods)
Customs processing fee $60

So approx all up cost - $4020

Adjust components for actual know costs.

Just an idea of all up costs based on your estimated cost of the box and my recent experience importing 60kg of goods valued over $1000.

Garry

RRPhil on this thread appears to know a bit about your NV transfer

Found the answer to the difference between the NV125 and the NV225 transfer cases. The BMW is just an AWD vehicle with no low range. So the 1 in 125 is for one speed, and the 2 in 225 is for two speed... Simple if you think about it....

Still trying to find out if the bolt pattern and spline is the same.

found this, don't know if you already have it.