5Series.net - Forums - max torque for 8-speed auto in diesels

5Series.net - Forums (https://5series.net/forums/)

- F10 Discussion (https://5series.net/forums/f10-discussion-33/)

- - max torque for 8-speed auto in diesels (https://5series.net/forums/f10-discussion-33/max-torque-8-speed-auto-diesels-101879/)

Here's some tech info regarding the 8-speed automatic gearboxes in the F10.

The reason for looking this up was because I wanted to know what kind of diesel tuning box I could use in my upcoming 520d minimizing the risk of blowing the gearbox to high heaven because of too much torque.
(That said, I have not decided wether to get a tuning box or not...)

Anyway, here's the info I found :

The 520d and 525d are equipped with a ZF 8HP45 specified for a max torque (diesel) of 500 Nm.
The 530d is equipped with a ZF 8HP70 specified for a max torque (diesel) of 700 Nm.

Quote:

Originally Posted by Scandic24 (Post 1213785)

There seems to be good tuning potential then... What kind of tuning are you looking in to? With my first 2005 530d i had a KCR-box and I wasn't very satisfied. I Couldn't feel a very big difference and it got serious turbo whistle after 40000 kms, don't know if it was because of the box though... I've read from many sources that you should go for a remap instead.

Your signature tells me that your F10 will look stunning! Black, tinted windows, shadowline and the little chrome stripe on the handles... :twoup:

Can't wait to see pics!

Thanks!
The 4 month waiting is coming to an end next week (hopefully) :dance:
I'll promise to put up some pics asap.

Any info on what gearbox on the 550i?

Quote:

Originally Posted by cidair (Post 1216688)

Any info on what gearbox on the 550i?

Not 100% sure but the 550i is most likely fitted with the 8HP70 (same as in the GT) with a max torque of 700 Nm.

Quote:

Originally Posted by Scandic24 (Post 1213785)

Here's some tech info regarding the 8-speed automatic gearboxes in the F10.
The reason for looking this up was because I wanted to know what kind of diesel tuning box I could use in my upcoming 520d minimizing the risk of blowing the gearbox to high heaven because of too much torque.
Anyway, here's the info I found :
The 520d and 525d are equipped with a ZF 8HP45 specified for a max torque (diesel) of 500 Nm.

Great post Scandic24 :thumbsup:

The engine (520d) may not be as bad as of what you may believe on my writings,
but better torgue at under 1.500 rpm would be very nice to have.

There may also be some BMW updates to come as the facts reach the BMW HQ's.

Delivery this week?

Quote:

Originally Posted by Scandic24 (Post 1216987)

Not 100% sure but the 550i is most likely fitted with the 8HP70 (same as in the GT) with a max torque of 700 Nm.

Yes!
According to the tech specs the 550i is equipped with the 8HP70!

Quote:

Originally Posted by Ricracing (Post 1217073)

Thanks! :)

According to BMW, expected delivery is this week! :thumbsup:
My sales rep is on holiday now but he has prepared all the paperwork and he has promised me to be on standby.
Hopefully...HOPEFULLY it will be here and ready for pickup by friday.
You'll be the first to know :wow:

Quote:

Originally Posted by Scandic24 (Post 1217132)

You'll be the first to know :wow:

You know the skill, a lot of pics, please.