leecavturbo

around gt30 or 35 ish spec ?

AndyRST

Are any of the GT series turbo's able to handle anti-lag then ?

leecavturbo

only mild AL i think, but i want full boost @ no load

melzieann

i was under the impression that GT series turbos are unable to take anti-lag

not 100% on that just i have been told

Fudgey

iTrader: (4)

you can run ALS on GT turbos, but they wont last very long

the shafts run on a very thin layer of oil over the roller bearings and it will kill them quite quickly.

you also need to run a dump valve on a GT turbo, too

leecavturbo

i know you can ALS is not something derived from a type of turbo but its a engine management control method and like you say you can do antialg on GT or any turbo except they won't last and where not talking they will evetually fail sooner than expected but could fook up within secs of too much ALS.

CliffRS4

iTrader: (1)

Bit old skool but what about a T4 with a maram shaft
Or maybe I'm just talking shit

gus

iTrader: (1)

what about the turbo dynamics roller bearing t34



its in this months performance ford if wanna see spec

Markb_s1

surely to get gt30/35 size you'd be looking at a big fook off old skool t4 wouldn't you?

leecavturbo

anymore

Mark_1

the gt series is rated to handle 950 degrees, which means they should handle mild antilag, but you will eventually get above 950 degrees.

What power figures are you looking at?

ihi wrc turbos are up for the job, but the cost is ridicoulus.
Also aggressive als will put all affected parts under such restraints that they will need short overhaul intervals, which again is causing ridicolous expenses, and then again.... ITS NOT WORTH IT!

unless you are entering some sort of competition.

leecavturbo

would ALS need to be agressive to acheive 1bar of boost @ wot @ 5000rpm with no load ( launch )?
and how quickly do the temps rise?
i'm estimating 3secs of full throttle ALS for boost to rise then normal engine running for the run?

Mark_1

ahh so you are just going to use it as a launch control?
dont use als then.

You dont need launch controll or als to achieve full boost on start.

When i launched with my 4x4 i held the handbrake, revved the engine and let the clutch far enough out for the driveline to be tensioned and the boost to build up to 1.2bar.
uses some clutch though and wont work on a sinter setup.

not shure if the launch controll will let you build boost as there is not enough resistance in the engine only when revving, but it will allow you to just keep the throttle floored, not thinking of kepping the revs at a certain speed.

lukeytheduke

cant you buy a launch controller for 80 quid?Im very interested in them as all they do is just hold the revs and allow the boost to come on, clever and cheap but i forgot who and where make them

any ideas??

leecavturbo

my ecu has anti-lag and launch control , but just wanting to know what turbo's can handle it.

Rs1

iTrader: (1)

Lee you'll probably need to look at a custom spec. It'll want a marram shaft thats for sure but the old t4's wont flow as much as 35r, quite possible the t4 will flow close to a .86 30r.
ALS has got bad news written all over it imo
Just set the launch control nice n high and dump the clutch.....i'm sure the txb will be fine

leecavturbo

its only to play with. and we have a weak txb. ford has a weak gearbox and diffs so pipe smoke and stick
Ł500 for a 500bhp/450ft/lb capable txb is better than what ford have to fork out

stevieturbo

Ask yourself this....

Do I have enough traction ( and a strong enough drivetrain ) to launch at full boost, circa 5000rpm ????

If you do...Im already impressed !!!!

Unless you have huge amounts of traction, you dont need to launch with a lot of boost.
A mate T34 Cossie can launch WOT at a tad under 5000rpm, and really get off the line. No bogging, and no massive wheelspin ( not that it would have enough power to anyway ). It only makes about 2-3psi doing this, but it works very well every time.. No ALS, just an auxiliary rev limit.

You dont need ALS to get off the line well.

pm sent too...

lukeytheduke

That what i wa sthinking off mate, could you PM me details of this?Cheers

Luke

msport

first off all, you wont get any ALS function with the throttle full open, it only kicks in when throttle is closed a certain amount(tuned in). On my GrpA escos it kicks in below 65% throttle and has different amount of ign retard through the revtable, the lower revs go the more retard to keep turbo running. I have not seen any rallycar having full boost on ALS, it usually just keeps the turbo rolling so when throttle is applied it boosts up immediately. You could propably go full boost, but there is no meaning cause the car needs to decrease speed when throttle is closed, else you will either burn brakes, turbo or both.

WRC IHI turbo is too small even without restrictor to flow more than ~400bhp its made to be optimum for 360bhp. Those cost LOTS and repairs cost almost half of the turbo, same thing as GTs you need to replace the core when bearings run out.

Only MarM 247(superalloy) shafts can take the abuse of full ALS what i know, used in GrpA t34s for ex.

You need launch control as the gentlemen here adviced you about, even latest WRC cars use it.

Regards

Jay,

iTrader: (4)

the dta can run wot antilag msport

msport

Yes any cpu with ALS propably can, but i cant see how it will work proper, well maybe on a dragcar..

cossiemanden

I bought the launch-control from demon tweeks, tried both micro-dynamics and omex, kost about 90quid
Works PERFECT, nothing else to say.
Works like an custom rev-limiter, nothing to do with als, and is an WOT-system.
Launched at 6500rpm, held the throttle at about 2-3sec and gave me about 0,7bar off boost.
RECOMANDABLE

stevieturbo

Exactly the same as what I was doing, except I just used the Haltech's built in aux rev limit...

Easy to setup, and very effective.

cossiemanden

Just what i`m up to
Which haltech system do u use?
I have the e11v2

stevieturbo

I used the E8...I had no need for the extra outputs of the E11, and the E8 did everything I needed it to....and no messing about changing triggers either

lukeytheduke

isnt 6500rpm quite high to launch??

lukeytheduke

i just looked at demotweeks website for the launch controll and couldnt find anything! does anyone have a name for it??

Stavros

Look in the rev limiter pages, its built in to most of them, as all it is is an second, lower, rev limiter

6500 isnt too high on a 4wd.

But on a 2wd boost on the startline makes launches even worse unless you got MEGA grip, trust me, i could launch in 2nd n still go nowhere at all by using ALS on the startline.

But if you got the grip, 2wd or 4wd, 6500 could be way too low, its all about grip.

lukeytheduke

how is it wired in and does anyone reccomend a launch controll system??

Stavros

Takes 20mins tops, dead easy.

Id reccomend it if you have the grip for it.

PS, your sig is lying

lukeytheduke

theres an OMEX one,95 quid, grip! its a rwd mate!

So where do they wire into then?

what are the pros and cons of having one then?

ballin

iTrader: (1)

I've got an omex one for sale, not been fitted stripped the car before I had a chance
pm me if interested!

ps. this is not a for sale post

Smit

iTrader: (5)

Would say about 5000k was about my blipping launch revs...

Stavros

pro- you can get on boost before you even move.

con- RWD cossies almost always have such horrendous grip that will make your car slower, not faster

lukeytheduke

so what amount of revs does boost come in then or is it the position of the throttle??

Does having launch controll sound good!?

Stavros

with launch control you will have your foot to the floor.
higher the rpm and longer it is bouncing off the rev limiter the higher the boost will raise.
its eaisly possible to get full boost like that if you wanted.

and it sounds like bouncing off the rev limiter does, but at a lower revs, so papapapapapaapapapapapbangpapapapapabangbang etc etc.

lukeytheduke

papapapapapaapapapapapbangpapapapapabangbang

lmao i cant wait to fit it then, so how can you get full boost from launch then?

Stavros

depends what turbo, but set fairly high revs on the launch controller and keep your foot planted while using it for 10secs or so should do it.

and then watch the car just sit there doing a burnout (or break the rear diff ), as it sure wont grip!

lukeytheduke

lol, you have little faith my friend nor do i!!

so what is safe boost for launch then a stage one cossie. I have 8x18inch Goodyear F1's at the back which should help a bit