ZF 6HP transmission

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FLATSPOT
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ZF 6HP transmission

Post by FLATSPOT » Mon Jul 09, 2018 10:27 am

Hello i own a E89 3.0 sDRIVE with a 6hp transmission I'm not sure if i have got a problem or not when I'm driving at 30 mph the car is in 4th and the engine Revs are a round1600 rpm the same at 40 the car is in 5th and the Revs are at1600 can anyone tell me if this is normal or is there a problem with the transmission

djstan
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ZF 6HP transmission

Post by djstan » Mon Jul 09, 2018 11:58 am

Does it feel like something's wrong? What's your concern?
10-plate E89 35i, Deep Sea Blue, complete with stubby aerial :)

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ronk
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ZF 6HP transmission

Post by ronk » Tue Jul 10, 2018 12:16 am

Sounds ok to me !
1600 rpm - what are you expecting it to be?
What’s it doing at 50mph?
You don't stop playing when you get old - You get old when you stop playing!
So I bought a 35is with all the toys to play with. :thumbsup:

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FLATSPOT
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ZF 6HP transmission

Post by FLATSPOT » Tue Jul 10, 2018 4:46 am

It just seems like it wants to be in fifth at 30 mph and sixth at 40 mph just to bring the revs down a little if you drive it in manual mode you can put it in fifth at 30 mph and sixth at 40 mph the revs come down to 1200 the car feels happy at that its not labouring the 3.0 E85 I use to own would be in top gear at 30 mph and the revs were at 1200 that was a 5 speed auto

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ronk
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ZF 6HP transmission

Post by ronk » Fri Jul 13, 2018 12:01 am

FLATSPOT wrote:
Tue Jul 10, 2018 4:46 am
It just seems like it wants to be in fifth at 30 mph and sixth at 40 mph just to bring the revs down a little if you drive it in manual mode you can put it in fifth at 30 mph and sixth at 40 mph the revs come down to 1200 the car feels happy at that its not labouring the 3.0 E85 I use to own would be in top gear at 30 mph and the revs were at 1200 that was a 5 speed auto

I think that the gearbox knows best!
Yes you can force the gearbox to change up to a higher gear - it’s just like a cyclist with strong legs, he can push the pedals using his big strong legs - but gets better efficiency when he uses a lower gear with a good cadence.

Let the engine spin and let the box do it’s thing - 1600 isn’t excessive!
You don't stop playing when you get old - You get old when you stop playing!
So I bought a 35is with all the toys to play with. :thumbsup:

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