great fun.

even if derv is 10p per litre dearer than unleaded.

:):):)

Trying to get hold of this

https://rover.ebay.com/rover/0/0/0?m...2F333070760635

Drew

Looks good.

Just wonder why he had a new engine?? Plus the new engine has been rebuilt?? Might be worth asking the question.

50 mpg, seems a bit high I get around 29/30 ish but that's giving it some welly.

Can you get to Norwich and give it a drive, to see how it goes.

My one gets 158 bhp and 238 ft lbs torque with a similar set up as he has.

Good luck with it.

I think 50mpg is the book figure for the diesel. I'm not expecting that but something better than the T nasp I have atm would be nice.

I've not heard too much on engine issues so I'm not sure what could have gone wrong. Perhaps bad tuning?!

Norwich isn't close so if it ends up eBay I'll be there blind, but it's been posted on a few platforms and I've contacted the owner already.

That said it's not been easy and I'm a little unsure of the seller so I may have to pass on this one. It's a shame but I'll keep looking.


Drew

hope you get a good one.

50mpg is easily achievable with a rover 420 di which is the standard intercooled version. And that's with a vp synergy tuning box and boost turned up to 18psi.

I often get 55mpg :)


Connor.

Pete I don't know how you drive you ZS to only get 29/30mpg out of it.... I've had 40-45mpg out of mine consistently with the high level of tune...

I can get 30mpg out the mustang on an eco run (50mph cruise control during roadworks on the motorway)….

Drew
I'd question what the uprated turbo is/was and who has done the mapping; it'd give you more of an idea of expectations.
It looks tidy enough, although I also question what was involved in the engine rebuild and why it was required....

I've put mine though a lot of abuse, it's had a new fuel pump, and the head was ported, but nothing else on it has been changed (other than the HG a couple of times ;))

That’s funny! Our Peter is not your usual old driver! He’s a right tearaway! Respect! :bow:

I do try, with my speed control sitting beside me, but the need for speed is still there.

Long time dead, as the say.

Gotta have smoke, if you wont the poke!! Pete.

:):):)

That's true.... or maybe you do a lot of town miles?

I know that used to kill the ZS....

I'm hoping to have both poke and little smoke tho ;)

The power is awesome and it is as quick as my 160 TF and that's quick.

I suppose double the torque sorts out the extra weight of the derv.

MPG has never bothered me as I just enjoy pushing it up to the red line

:):):)

Ah - that's why then, I've never really pushed mine up that way, I found it was faster to short shift and ride the torque, as the curve is so much in favour of the low end on the L-series....

As you say, it matters not if you can afford it & you have fun in the process! :trampoline:

:):):):) :bow::bow::bow:

Quick question. When should I expect the turbo to be making max boost pressure?

If I was testing in 3rd gear for example?

Is there a recommended procedure for testing boost pressure?

I'm trying to adjust the actuator to 19psi but the readings from the torque app seem inconsistent. 17.9psi, 18.5 psi , 19.5 psi sometimes hitting 20 psi

A standard turbo will start to spool at about 1500 rpm, and should be hitting full boost by about 1800 rpm if my memory is correct (I've not had one fitted for many many years).

I found the best method was to stick in as high a gear as I could on as straight a piece of tarmac and just floor it for as long as you can, allowing the car to come on boost in the process. eg start with the car off boost and let it wind up, this avoids any spiking.

Using a higher gear will give you longer to get a more consistent reading as well - but has issues around top speed achievable if it is on the road.

It's ok to have a little spike of overboost if you just jam your foot on the throttle while on boost, but it should settle down quickly.

I don't know if the app you're using takes into consideration Ambient air pressure, but a half a PSI here and there is nothing to worry about on the diesel, and there are some out there now that think running over 20PSI is fine for the turbo too, so as long as it stays below 20 for the most time you should be ok.

So been a hugely long time since my last update - and part of that was no news, part of that was bad news & another part has been the pandemic....

But.... There is progress!

Turned out the turbo was in a bad state; and was overboosting with the vanes wide open - eventually managed to get it sorted out by sending it off, but we had to wait post lockdowns last year for various factors - moral of the story, even a reputable tuning company can get it wrong, and worth budgeting for getting to checked after a first run - if it doesn't behave instantly as expected.

The controller is now in, and it's had a few sessions on the dyno in the very very very early stages of mapping both it and the ecu.

Don't want to mention numbers at this stage as it's so early still - but the shape of the torque curve is lovely - almost flat in fact, but a little to the "right" than we were hoping for... but again it's still very early stages so not a concern at this time.

Fingers crossed I'll be able to give some more frequent updates now going forwards :D

what a tease.

158 and 241 last time, but that was a few years ago now.

Will love to see the figures when you are happy with the setup.

Good luck with it.

I've had 170/270 out of the old setup - but that was HG melting power/torque due to the crappy hybrid turbo.

I can say with a high level of confidence, with what I know currently, that will be eclipsed.

good going, it will certainly fly.