Difference between xxx35d and xxx40d?

Difference between xxx35d and xxx40d?

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edb49

Original Poster:

1,652 posts

204 months

Tuesday 9th November 2010
quotequote all
From BMW's site today:

X5 30d = 245bhp
X5 40d = 306bhp

530d = 245bhp
535d = 299bhp

330d = 245bhp
335d = 286bhp


The 30d all seem to be the same output, so I guess they're identical engines. However the next diesel up is a different output on each model. And on the X5 it's called a 40d instead of 35d, but only a marginal increase in power on the 535d.

Does anyone know the differences?

Remagel2507

1,456 posts

191 months

Tuesday 9th November 2010
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As far as I know the 40d engine is a 3.0 Single Turbo unit while the 35d engine is the more familiar 3.0 twin turbo unit.

edb49

Original Poster:

1,652 posts

204 months

Tuesday 9th November 2010
quotequote all
Remagel2507 said:
As far as I know the 40d engine is a 3.0 Single Turbo unit while the 35d engine is the more familiar 3.0 twin turbo unit.
Interesting... so the 40d is the 30d with a remap?

DVandrews

1,315 posts

282 months

Tuesday 9th November 2010
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edb49 said:
Remagel2507 said:
As far as I know the 40d engine is a 3.0 Single Turbo unit while the 35d engine is the more familiar 3.0 twin turbo unit.
Interesting... so the 40d is the 30d with a remap?
The X5 40d engine is the 3.0 twin turbo unit found in the 535 etc. but tweaked a little more.

Dave

edb49

Original Poster:

1,652 posts

204 months

Tuesday 9th November 2010
quotequote all
Remagel2507 said:
As far as I know the 40d engine is a 3.0 Single Turbo unit while the 35d engine is the more familiar 3.0 twin turbo unit.
Just checked the BMW site, and it states:

"Twin turbochargers with variable turbine geometry"

So the 40d is a twin tubby unit.

Remagel2507

1,456 posts

191 months

Tuesday 9th November 2010
quotequote all
edb49 said:
Remagel2507 said:
As far as I know the 40d engine is a 3.0 Single Turbo unit while the 35d engine is the more familiar 3.0 twin turbo unit.
Just checked the BMW site, and it states:

"Twin turbochargers with variable turbine geometry"

So the 40d is a twin tubby unit.
Thats odd because a mate of mine says he looked under the bonnet of an X5 40d and could only see one turbocharger whereas the 335d next to it definitely had two.

I did think it was a twin turbo to start with but he told me otherwise - apologies OP

EDIT: I'll go and tell him what a st mechanic he is

Edited by Remagel2507 on Tuesday 9th November 22:50

8Tech

2,136 posts

197 months

Thursday 11th November 2010
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The 4.0D is a twin turbo with variable geometry turbos and is 3.0 litre capacity. Badged as a 4.0 as a marketing ploy against Audi and Mercedes with their big capacity diesels but with lower emissions and better fuel economy.

Power differences between models is almost certainly down to management programming to give driving characteristics appropriate for the application.

8Tech.

007singh

268 posts

167 months

Thursday 11th November 2010
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Anyone know what a 40d with a remap puts out? smile