Hi,

 

I've heard you can get an anti-lag system on turbo cars that basically keeps the turbos spinning continiously....think they use it on Rally cars.

 

Anyone know much about this and where you can get it done and costs etc etc??

 

Cheers,

 

Dan :cool:

Sounds as if it could shorten the life of your Tubs.

 

You gotta remember these rally guys have ££££ to spend (unlike me).

me mates having it done on his 200sx he said it can be operated by a switch to turn on and off when you want, He will have it set around 6psi then the turbo will cut in fully up to 30+psi just to shorten the lag really!

not sure where it could be done for the 300 though, would have thought using nos would be better, especially for the turbo life

Think about it - if you are keeping the turbos spinning, you must be getting energy from somewhere. That energy has to come from the engine somehow: electrical, belt, viscous whatsit. So if you are keeping the turbos spinning unnecessarily, you are taking hp from somewhere else all the time just on the off chance you might want to reduce the lag sometime.

Anti lag is produced by injecting NOS into the exhaust of and igniting it. The force of the explosion spins up the turbos.

edit!!!! Anti lag is produced by injecting FUEL into the exhaust side of the turbo where it ignites. The force of the explosion spins up the turbos.

 

It WILL kill your turbos Very quickly!!!

NOS doesnt ignite! ;)

the thing you talking about is ALSI i think god knows what is stands for but is bloody expensive. if i understand it correctly it alters your timing, advances it whilst decreasing the boost so the turbo spins with out generating much power. if you listen it makes a flat exhaust noise whilst back firring. never seen it on anything but a works rally car.

Thats a new one on me ????

the thing you talking about is ALSI i think god knows what is stands for but is bloody expensive. if i understand it correctly it alters your timing, advances it whilst decreasing the boost so the turbo spins with out generating much power. if you listen it makes a flat exhaust noise whilst back firring. never seen it on anything but a works rally car.

 

Yep sounds like a bag off old nails but goes like stink!

Did look into doing this but unfortunately you need turbines that can withstand 1300°C each wheel costs about the same as a full greddy turbo kit!

Basically you retard the timing and go mega rich when you want to spool them up, you then get the ECU to cut the spark to each cylinder in turn for about 75% of the time, this results in loads of fuel going in to the manifolds.

Using a valve, the ECU then injects pressurised air from the inlet manifold straight into the exhaust manifold, this meets with the hot fuel mixture, which then ignites and spins the turbos up. Was going to try modifying the EGR system to do it.

Another approach is to use a nitrous system to boost power until the turbos come in, not anti-lag as such but I'm sure it's effective and a lot kinder to the turbos.

Did look into doing this but unfortunately you need turbines that can withstand 1300°C each wheel costs about the same as a full greddy turbo kit!

Basically you retard the timing and go mega rich when you want to spool them up, you then get the ECU to cut the spark to each cylinder in turn for about 75% of the time, this results in loads of fuel going in to the manifolds.

Using a valve, the ECU then injects pressurised air from the inlet manifold straight into the exhaust manifold, this meets with the hot fuel mixture, which then ignites and spins the turbos up. Was going to try modifying the EGR system to do it.

Another approach is to use a nitrous system to boost power until the turbos come in, not anti-lag as such but I'm sure it's effective and a lot kinder to the turbos.

 

 

fook me john - is there anything you dont know :bow:

 

Regards,

 

alex

fook me john - is there anything you dont know :bow:

 

Regards,

 

alex

 

Absolutely loads, but still trying to learn!

Absolutely loads, but still trying to learn!

 

 

Yeah you keep forgetting - you aint no fookin expert! :p:D;) :duffer:

What would you know anyway, IT Chimp :smw:

What would you know anyway, IT GIMP :smw:

 

LMFAO :dance:

Bwahahahahaha I can give you some hints for running 22psi if you want :D

Bwahahahahaha I can give you some hints for running 22psi if you want but before I do can anyone lend me a jubilee clip as this duck tape just aint holding my actuator hose :confused: :D

 

sure Andy :xxx: :D

look, IM the daddy around here, & dont you forget it (got the trophy to prove it :D, even has our new club sec's name engraved on it - King Dick!! :rofl: )

NOS doesnt ignite!

 

Yup, youd be suprised the amount of ppl have said to me that isnt it dangerous carying a flamable substance after seeing the exploding thing probably on F&F.

 

Then you have to explain it just helps to feed the fire :D like the one in my engine lol

 

Guess an explosion or heat could rupture the tank in a crash and hence lots of fuel for the fire lol, pressurised too = big bang :O

 

Wouldnt like to ever see that happen.

Yup, youd be suprised the amount of ppl have said to me that isnt it dangerous carying a flamable substance after seeing the exploding thing probably on F&F.

 

Then you have to explain it just helps to feed the fire :D like the one in my engine lol

 

Guess an explosion or heat could rupture the tank in a crash and hence lots of fuel for the fire lol, pressurised too = big bang :O

 

Wouldnt like to ever see that happen.

 

my point was if you inject nitrous into the exhaust, then not a lot is gonna happen, theres no (very little) fuel for the nitrous to help burn!

 

which is what nitrous does - it helps support combustion (in the form of the O2 molecules) when fuel is present

ps - it isnt "flammable" either :D

ps - it isnt "flammable" either

 

I know man that was my point explaining that to ppl lol! (i meant oxygen being a fuel for the fire maybe wrong use of words)

 

Anyway gotta say another funny thing, went to a nitrous open day at a company me mate owns fitting kits etc, a guy with an R32 turned up. He was instantly saying his car was the fastest there. He came over as he was looking at cars and looked at my unusual zorsts and said 'how much bhp they give you' :rolleyes: I said to him nothing, its the other mods that do it, this just helps those mods along. Then he said 'well thats crap, a mate of mine is getting me a Motec system exhaust which will increase my car by 100bhp' :rofl:

 

And that is no shit I really couldnt beleive it!!!! Then I asked him what boost pressure he was runnig and he didnt know, apparantly the r32 was his first turbo car, his last was a vectra :O

 

F&F you do it again!

I used to have a cosworth with antilag and my advice is don't do it!! First off, the gains you would get on a road car (let alone one with such small turbos that don't suffer from any real noticeable lag) would be nominal. It only really matters when hundredths of a second count. Secondly, you would blow your turbos to bits and kill your manifoilds and downpipes. The spec of the turbos you'd have to use (left hand maram shafts etc, etc.) would cost an insane amount and (depending on the ferocity of the ALS) would need changing regularly (not a nice job on a GTO). I was lucky if i could get three months out of my WRC turbo without a rebuild. Finally, and probably the most important, when you install ALS and use it you always have full throttle and this shows up weak links in your drivetrain. The constant accelaration forces that our already "weak" gearbox, clutch would have to endure would kill them almost immediately.

 

ALS is fine for race cars which have thousand os pounds worth of drivetrain mods and get re-built vey regualry, but it spells trouble for road cars.

my mates fooked then :D

I fitted an Anti-lag kit to my rocketship and look what happened it started to DET... :D :confused: :D http://www.300zx.co.uk/forums/showthread.php?t=37099