lightning

lightning

Well-Known Member
With more power and torque?

I mean the transmission, is it rated for much more than the 120bhp that the engine puts out as standard?

So if it is remapped to (say) 160bhp and more torque, can the gearbox etc deal with it in the long term?

Reason l am asking is l had mine remapped recently and now the gearbox or transfer box seems to have developed a whining sound at around 70mph.

It may be coincidence l suppose.
 
The transmission oils were changed in 2013, at 51,000 miles.
It's now at 69,000 but has had only road use since l bought it last year at 56,000 and has not been hammered.
 
If your driving it solo I cant really see it. If your towing a few tonnes around regularly up and down dale on bumpy roads im sure it will
 
I just changed the oils today.

Gearbox oil looked fine, transfer box oil was brown but no bits on magnet, front/rear diffs looked OK but rear diff only had 1.3 litres of oil in it.
Replaced leaking oil seal and refilled diff.
 
I thought you said it was already chipped, hence the smoke?
But as you only bought it for local work what would be the point of tuning it?
 
We do longer journeys plus holidays in it. Going to Norfolk this year was alright but just slow pulling away and accelerating from all the roundabouts.
So l had it remapped but now it's smoking. It's strange as l started it this morning drove to Church no smoke, came out two hours later started it up and it produced what looked to me like grey smoke when l started it and every time l accelerated.
Now l just started it again three hours later and no smoke at all.
Oil and water levels do not change at all.

The smoke looks to me like what you get from a petrol engine when the valve guides or bores are worn.
 
I noticed smoke after the remap. It could be that there was already a fault, and the extra strain on the engine made it worse?
 
I did.

But they said it was normal to get a "a puff of smoke" when accelerating and maybe a cloud of smoke if it's been driven slowly for a while and then you floor it.
 
most diesels mapped or not do produce smoke when floored, also if you floor it in high gear at low revs engine bogs down and smokes until the revs rise
 
Ah, well that must be what they meant.

I am just in the process of removing the intercooler to see what state it's in.
 
380Nm?

The engine produces 300Nm as standard, so with a remap even a stage one the gearbox is going to be near to the design limit by the sound of it.

Nobody mentioned that when l was asking about tuning the Defender TD5!
 
lightning said:
380Nm?

The engine produces 300Nm as standard, so with a remap even a stage one the gearbox is going to be near to the design limit by the sound of it.

Nobody mentioned that when l was asking about tuning the Defender TD5!
Click to expand...
R380 can handle that all day long its the autos that can have issues.
 
lightning said:
We do longer journeys plus holidays in it. Going to Norfolk this year was alright but just slow pulling away and accelerating from all the roundabouts.
So l had it remapped but now it's smoking. It's strange as l started it this morning drove to Church no smoke, came out two hours later started it up and it produced what looked to me like grey smoke when l started it and every time l accelerated.
Now l just started it again three hours later and no smoke at all.
Oil and water levels do not change at all.

The smoke looks to me like what you get from a petrol engine when the valve guides or bores are worn.
Click to expand...

See now I dont go to church and my engines dont smoke, maybe theres a link?
On of my friends does go to church every sunday and her car doesnt work at all.
 
The r380 box was developed through its life, to cope with extra stresses placed on it, the info is on Ashcroft transmissions site
 
Well, the intercooler was fine, a bit of oil in it but nothing really.

I think the next thing is to get the ECU returned to standard, and then find out what's causing it to smoke.
 
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