This is probably ridiculous - TD5 Antilag

[bankz5152]

Almost sure this isnt possible and/or ridiculous/insane but is it possible?

I have seen Mack trucks with it, then again they are a different breed.

Btw more of a friendly discussion than me actually wanting to implement something like this, unless that is it can be done

 

[gstuart]

Almost sure this isnt possible and/or ridiculous/insane but is it possible?

I have seen Mack trucks with it, then again they are a different breed.

Btw more of a friendly discussion than me actually wanting to implement something like this, unless that is it can be done

is that to prevent the throttle response changing , ie where u can fool it to believe it’s always in high when ur actually in low , or am i going totally on the wrong path, lol

ie , quote

http://www.defender2.net/forum/topic579.html

on a td5 the plug that goes into the top of the clutch m/c controlled the anti shunt, ie it held engine revs when you dipped the clutch to 'aid' smooth changes. in reality if you can drive its bloody annoying. disconnecting it stops this.

 

[Paul D]

It depends what you mean by antilag. Originally it was to reduce the ridiculous times taken to spool up by large turbo's, usually by fitting another small turbo! As @gstuart says, it could mean a different thing nowadays by changing the mapping depending on throttle position, crank sensor, 'other' data, et al so the engine delivers a good power throughout the range ..

I don't think the size of turbo in a TD5, or any Landrover really, is large enough for appreciable lag other than from an absolute standstill.

 

[bankz5152]

@gstuart Its what rally cars and some high end supercars use to stay on full boost from zero revs. So basically full boost all the time - zero lag

 

[jamesmartin]

Almost sure this isnt possible and/or ridiculous/insane but is it possible?

I have seen Mack trucks with it, then again they are a different breed.

Btw more of a friendly discussion than me actually wanting to implement something like this, unless that is it can be done

its possible and great for rally cars etc ,buggers emissions so no good for cats etc greatly increases exhaust temps so not so good on a stock engine

 

[gstuart]

@gstuart Its what rally cars and some high end supercars use to stay on full boost from zero revs. So basically full boost all the time - zero lag

thks, so i assume then a special remap can be added for that, so at least it’s within a safer parameter and having a set limit

may i ask having it on constant boost wouldn’t that put the engine under a lot of stress and prematurely destroy components quicker inc the turbo seals ?????

 

[gstuart]

It depends what you mean by antilag. Originally it was to reduce the ridiculous times taken to spool up by large turbo's, usually by fitting another small turbo! As @gstuart says, it could mean a different thing nowadays by changing the mapping depending on throttle position, crank sensor, 'other' data, et al so the engine delivers a good power throughout the range ..

I don't think the size of turbo in a TD5, or any Landrover really, is large enough for appreciable lag other than from an absolute standstill.

hi paul

that’s what i also thought , ie in the same way multiple sensors are attached to the accelerator pedal as different terrain adaptions are applied from the ecu , etc

 

[bankz5152]

thks, so i assume then a special remap can be added for that, so at least it’s within a safer parameter and having a set limit

may i ask having it on constant boost wouldn’t that put the engine under a lot of stress and prematurely destroy components quicker inc the turbo seals ?????

Shouldnt given the right parts are fitted. Fair few 2JZs and RB25s running antilag, how reliable they are is a different story... haha

Though wouldnt it be great to have full boost at basically no revs when you need it.

 

[Paul D]

I dunno ... Offroad maybe, but Green Laning probably needs a softer delivery, with a bit of ooomph available when you're moving. Very rare you want to 'jump' up a step.

On the road is a different matter ...

I guess if you ditched the turbo you'd get zero lag ...

 

[bankz5152]

Hahaha true. Laning you dont really need anything but 4wd and some half decent tyres.

Hefty off roading and racing it would be a benifit though

 

[Turboman]

Hefty off roading and racing it would be a benifit though

For that sort of use it might be easier and cheaper to get a whacking great petrol engine.

 

[goonarmy]

Sounds like a supercharger

 

[bankz5152]

For that sort of use it might be easier and cheaper to get a whacking great petrol engine.

True. Though more wanting to know if its actually possible. Some say it isnt on a diesel some it is.

I think Ford have their own version of antilag which involves an electric motor being strapped to the turbo which keeps it spooled. Touch the throttle max boost in an instant.

 

[nobber]

On some cars to can remap to eliminate turbo lag, Saabs for instance, but on a LandRover? Really? You could try just revving the crap out of it all the time, WOT it from standstill, it wont last long and it wont illuminate lag altogether but you should get minimal lag, here and there.

 

[Citizen Kane]

I guess a turbo is ultimately a heat exchanger, if you want to spin it up you need to burn fuel to produce an expanding gas, cant think where you could burn it other than through the engine cycle, I suppose you could dump some into the exhaust manifold and burn it there, seems a bit wasteful.

 

[bankz5152]

I guess a turbo is ultimately a heat exchanger, if you want to spin it up you need to burn fuel to produce an expanding gas, cant think where you could burn it other than through the engine cycle, I suppose you could dump some into the exhaust manifold and burn it there, seems a bit wasteful.

Thats pretty much how antilag works on petrols, very wasteful yes but full boost from the get go. That's why it can't really be dont on a diesel as diesel doesn't combust like petrol will.