Anti lag and my turbo
04-10-2004, 03:42 PM
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Anti lag and my turbo
I have deceided to go anti lag now that the SECS ecu is here soon 
...Now my shaft will 900-950c in terms of how hot when using aggressive anti-lag..what do you see upto?..I am only gonna bung an ALS valve in the std housing so will only be mild..but am interested in what full on temps are!
My turbo spec for those interested is the lastest america comp wheel from the T4 family.....bigger than a std t34 but slightly smaller than the T4...nence it gets full boosts at 4000rpm instead of 4300rpm on T4 (on my spec) the exhaust housing is a .63 which is machined to fit the T4 exhaust wheel...that explains why the car is so quick!
...Now my shaft will 900-950c in terms of how hot when using aggressive anti-lag..what do you see upto?..I am only gonna bung an ALS valve in the std housing so will only be mild..but am interested in what full on temps are!My turbo spec for those interested is the lastest america comp wheel from the T4 family.....bigger than a std t34 but slightly smaller than the T4...nence it gets full boosts at 4000rpm instead of 4300rpm on T4 (on my spec) the exhaust housing is a .63 which is machined to fit the T4 exhaust wheel...that explains why the car is so quick!
04-10-2004, 03:51 PM
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Originally Posted by Itsmeagain
900-1000 deg C will take a fair old time off throttle with the ALS on to get to that temp IMA, youl be fine
shouldn't it swtich off after 10seconds it mapped correctly???
can you explain what you mean??? as i'm having anti lag i need to learn...lol
04-10-2004, 03:51 PM
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Cheers...so why do people spend the collosal ammouts to have the maram shaft? 
My turbo will do as i say 950c........i guess the new materials are just better....unless you go rallying why bother
Mike so you dont really need a maram shaft then in theory as you actually use yours aggressively i take it on track...can YOU justify the xtra cash spent?...Its a grand more aint it!!!
My turbo will do as i say 950c........i guess the new materials are just better....unless you go rallying why botherMike so you dont really need a maram shaft then in theory as you actually use yours aggressively i take it on track...can YOU justify the xtra cash spent?...Its a grand more aint it!!!
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04-10-2004, 03:56 PM
#8
DEYTUKURJERBS
Spikey- 10secs if its mapped for 10secs.
Mine would turn off it at idle speed for 10secs, but if on the overrun itd jus keep going as long as i wanted it to, but in all honesty your VERY unlikly to be off throttle for more than 10sec at a time with the ALS on arnt you...
We only used to do it to see what temps it got to, etc etc, by letting off at 160+ on the M-way (and to do our damdest to remove all the final bits of baffle from the backbox, lol).
Mine would turn off it at idle speed for 10secs, but if on the overrun itd jus keep going as long as i wanted it to, but in all honesty your VERY unlikly to be off throttle for more than 10sec at a time with the ALS on arnt you...
We only used to do it to see what temps it got to, etc etc, by letting off at 160+ on the M-way (and to do our damdest to remove all the final bits of baffle from the backbox, lol).
04-10-2004, 04:20 PM
#9
Phil,
Because when at the Ring, it spends most of it's time at these higher temps, which would cause a non-maram shaft to melt.
On the road, where you may only see this temp briefly, you will probably get away with it.
Regarding it switching off after 10s, yep they do, but you have to realise that when you are on long twisty tracks with plenty of heavy braking areas, the short spurts of acceleration in between are not sufficient to allow the turbo to get below 850-900°C, so the second the ALS comes on again, the temp climbs instantly. In fact at the ring the EGT stays at a constant 950°C for most of the lap
. I'd like to see your turbo do that Phil 
.
The exhaust got THAT hot, that it melted the centre box poly hanger
.
Because when at the Ring, it spends most of it's time at these higher temps, which would cause a non-maram shaft to melt.
On the road, where you may only see this temp briefly, you will probably get away with it.
Regarding it switching off after 10s, yep they do, but you have to realise that when you are on long twisty tracks with plenty of heavy braking areas, the short spurts of acceleration in between are not sufficient to allow the turbo to get below 850-900°C, so the second the ALS comes on again, the temp climbs instantly. In fact at the ring the EGT stays at a constant 950°C for most of the lap
. I'd like to see your turbo do that Phil .The exhaust got THAT hot, that it melted the centre box poly hanger
.
04-10-2004, 04:23 PM
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I got the immpression it could hold a sustained 950c.........or he would have said only briefly let it hold that!!!!!The marams are good for about 200c more apparently.
I bet you wish you could have a Phil shaft 
I bet you wish you could have a Phil shaft
04-10-2004, 06:44 PM
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have seen mine max at 950c with no als lol we was pissing about with overrun fuelling at the time, people who say that aint required to keep temps down really need a rethink rose almost 150c in 2 seconds after lifting off WOT is a marham shaft like but even so i shit it and demanded it be put back in the map immediately
rose almost 150c in 2 seconds after lifting off WOT is a marham shaft like but even so i shit it and demanded it be put back in the map immediately
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