Lack of torque?

[kelvo]

Originally Posted by minty2

You're not alone; the KV6 is not a particularly torquey engine; the remapped diesel has loads more at lower revs. On my automatic, I have to either gently kick down or manually select 2nd to get up an incline more quickly. You tap the KV6's power by revving it. Daft thing is that the auto doesn't think it needs to change down when tackling a steepish incline, but when starting off on one, it won't change up until you're over the top!

Never a great fan of automatics, I would rather be in what gear I want rather than what some box of tricks thinks it should be.

Best thing with either turbo diesel or the KV6 I find is to use the rev counter at optimum revs, the torque band on the 190 is around 3 - 4k rpm. Let any engine drop in revs and it will labour on hills.

[Theodore]

I don't think it matters what the rev counter says. My car will rev no problem, it just won't go any quicker up a hill.

Originally Posted by kelvo

Never a great fan of automatics, I would rather be in what gear I want rather than what some box of tricks thinks it should be.

Best thing with either turbo diesel or the KV6 I find is to use the rev counter at optimum revs, the torque band on the 190 is around 3 - 4k rpm. Let any engine drop in revs and it will labour on hills.

[chris75]

Originally Posted by Theodore

I don't think it matters what the rev counter says. My car will rev no problem, it just won't go any quicker up a hill.

This thread is getting a little puzzling to a manual box man
Are you saying that your auto's revs increase but the speed doesn't , in a given gear ?
(By the way , I am very happy with my manual v6 on hills ; you just need to use the gearstick )

[LeeW]

Originally Posted by chris75

This thread is getting a little puzzling to a manual box man
Are you saying that your auto's revs increase but the speed doesn't , in a given gear ?
(By the way , I am very happy with my manual v6 on hills ; you just need to use the gearstick )

Fully agree. I have owned a couple of 6 cylinder cars in my time and all could be described as ‘lazy’ the 75 included. Sounds great on full chat as well.

[Theodore]

Sadly, Yes, that's exactly what we're saying.

Originally Posted by chris75

This thread is getting a little puzzling to a manual box man
Are you saying that your auto's revs increase but the speed doesn't , in a given gear ?
(By the way , I am very happy with my manual v6 on hills ; you just need to use the gearstick )

[minty2]

Originally Posted by Theodore

Sadly, Yes, that's exactly what we're saying.

My auto doesn’t rev if it’s in too high a gear for the job. It just plods until I kick down or shift manually!

[SD1too]

Originally Posted by Theodore

Hi, nah. we had the VIS refurbed a few months back ...

By whom may I ask? I hope that your answer will be by club expert Stocktake. If not, as Ravinder says, your symptoms indicate a non functioning balance VIS actuator and/or sticking of the associated flap valve. Have you checked this valve?

Originally Posted by trikey

As minty says the v6 isn’t known for low down power, shame really.

Originally Posted by genpk

The kv6 engines do lack low down torque and you really need to kick the pedal down to get the auto to kick down ...

Originally Posted by Theodore

Ok, that I guess more or less confirms it was badly designed.

Sorry guys, I have to strongly disagree with these sentiments. If the VIS system is working properly the torque is sufficient. As far as automatic transmission kickdown is concerned, clearing the blocked crankcase breather pinholes in both cam covers will effect a dramatic improvement. Sadly many can't be bothered to do this and so remain under the misapprehension that there is a design fault.

Simon

[marinabrian]

Originally Posted by SD1too

By whom may I ask? I hope that your answer will be by club expert Stocktake. If not, as Ravinder says, your symptoms indicate a non functioning balance VIS actuator and/or sticking of the associated flap valve. Have you checked this valve?



Sorry guys, I have to strongly disagree with these sentiments. If the VIS system is working properly the torque is sufficient. As far as automatic transmission kickdown is concerned, clearing the blocked crankcase breather pinholes in both cam covers will effect a dramatic improvement. Sadly many can't be bothered to do this and so remain under the misapprehension that there is a design fault.

Simon

Drive a diesel Simon, then be disappointed with the torque your V6 produces

I've never bought a V6 for just this reason, I like bottom end grunt, and the V6 requires to be wound up quite a lot to lift it's skirts.

On the plus side though, they do sound quite nice

Brian

[guru]

The V6 does lack torque however dropping a cog or 2 should give you all the oomph you need to tackle just about any gradient.

[Theodore]

I'm glad there is a clear consensus on this