podgeywodgey23

Have an Efi conversion, omex 600, pace f mounted intercooler, helix 6 paddle clutch, full rebuild with standard pistons & rods..............the escort RS turbo has T3 turbos but unfortunatly i have a T2 FRST turbo so would it be ok to replace with a T25 and fit anti-lag?? considering the pressure a T3 makes well then a T2 with anti lag would have the same pressure wouldnt it??

andy130

iTrader: (2)

where u in ireland?

Turbocabbie

Anti-lag has nothing to do with boost pressure, it is a feature of your engine management.

An ALS system requires an air bypass, and generally this is done in one of two ways. The first method is to use a throttle air bypass; this may be an external bypass valve or a solenoid valve which opens up the throttle 12-20 degrees. This allows air to bypass the closed throttle and to reach the engine. The second method is to use a bypass valve which feeds charge air directly to the exhaust manifold.

The throttle bypass/throttle solenoid system is combined with ignition retardation and slight fuel enrichment (mainly to provide cooling), typically ignition occurs at 35-45° ATDC. This late ignition causes very little expansion of the gas in the cylinder; hence the pressure and temperature will still be very high when the exhaust valve opens. At the same time, the amount of torque delivered to the crankshaft will be very small (just enough to keep the engine running). The higher exhaust pressure and temperature combined with the increased mass flow is enough to keep the turbocharger spinning at high speed thus reducing lag. When the throttle is opened up again the ignition and fuel injection goes back to normal operation

podgeywodgey23

Yeh but could it be done to my engine and work safely enough??

Red_bull

i don't know if omex 600 can handle it but probably it will, but i would start with thinking of buying a decent turbo that fits your engine set up then being worried about ALS.

ALS has no use if you've fitted the wrong turbo on your car...

also if you go extreme with ALS you need to adapt your turbo to it, because of high temps

Christian and Beccy

iTrader: (14)

I think its great how people think that fitting ALS will cancel out the fact that the turbo is laggy.

ALS is terrible for alot of reasons. For starters there's the lack of vacuum once you come off the throttle, which can cause a bit of an issue with servo-assisted brakes.

podgeywodgey23

Ok well the turbo im getting is a hybrid fiesta turbo (T25)from turbotechnics( Iv the efi engine & manifold from aFRST in).... I want to go ahead with this because it seems to me safe enough using this turbo and installing anti lag because the T25 is not as big as the T3 that the CVH block is capable of handling anyway.. but would it still be dodgy ?? (I mean like messing my engine up)....The money is not a problem but i dont want to have to take the bottom end apart just to change pistons or rods ya kno??

Turbocabbie

Anti-lag on T25 will cause more heat and stress issues than a T3 running normally due to the way in which anti-lag works, so you will have greater possibility of reducing turbo life dramatically due to this.

I have anti-lag on my CVH and would not recommend it for a road car, the modified valve makes the car idle badly, as Christian has stated the lack of vacuum can cause issues with servo assisted brakes which is why I now run a pedal box setup.
I also have killed a turbo with anti-lag and now have one with an expensive marrem shaft.
If you use anti-lag on the public highway you must expect the attention of the police, i've been fined for using it as well

I love the sound of anti-lag but im not deluded about it, its a serious waste of money for a road car and offers very little at all worth having imho.

Chris69

go and read up about anti- lag mate as it doesn't sound as though you know wot it is.
its the turbo that suffers the most when using it amongst lots of other things- anti lag is great for pub talk and proper racinf but for road use isn't the best idea unless you have very deep pockets.
rest of your spec sounds ok and would provide quite minimal lag anyway imo.

podgeywodgey23

yeh sound for the info its not gona be a every day car anyways, just a weekend show car for the summer days( if ireland ever get sunny days that is) sound