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You think your turbo is big?

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waveydavey:
We have quite large turbo's onboard, the rotors are about two foot diamiter and the casing 6-8. Two of those on each of the four engines.
The big turbines are the two gas turbines though!

Mart:
or you could run full anti lag system like the rally boys use which keeps the turbo spinning at full speed during gear change so when you come back on power its there instantly, a lot of the cossie boys use anti lag systems to get mega horsepower.

when you watch any rallying and see the exhaust pop a flame its normally the unburnt fuel from the anti lag spinning at full speed then when the power comes back on bang unburnt fuel ignited big flame out of the exhaust.

hope i explained that right

strapping young lad:
sounds bout right

a couple of skylines were flaming but one particular scooby was going so fast i couldnt pan fast enough to catch him on my phone!  :shock:

good day out though, next one is in donington park in sept.

Xtremeteam:

--- Quote from: "Mart" ---or you could run full anti lag system like the rally boys use which keeps the turbo spinning at full speed during gear change so when you come back on power its there instantly, a lot of the cossie boys use anti lag systems to get mega horsepower.

when you watch any rallying and see the exhaust pop a flame its normally the unburnt fuel from the anti lag spinning at full speed then when the power comes back on bang unburnt fuel ignited big flame out of the exhaust.

hope i explained that right
--- End quote ---

yup
& change the turbo every 2nd event as it will make the turbo go pop

smo:

--- Quote from: "Evilgoat" ---Turbo size directly effects lag.

theres a lot of tricks you can use to reduce it, running it underboosted is one and the same way Audi do it on mine.

Turbo Lag is the delay from the change in engine speed and shaft speed of the turbo, ergo lag from increase in speed to boost pressure. Smaller turbs mean less lag but less pressure, biggers ones mean more lag and more boost.

Superchargers however do not suffer lag ;) There are also dual/multistage systems that use two turbos to reduce lage and for big big bucks theres variable turbine geometry too :)

HKS gear you pary for the name. The only comapny you need to know about for turbos is Garrett :) The Expence comes when you realise (as I did) that your exhaust was never supposed to take that kind of punishment and bits melt.
--- End quote ---


This is true, however superchargers have a leeching effect from the engine @ all revs, but particually at lower ones as they suck power through the drive system.

As for variable turbine geometry its pretty standard on modern cars, almost all diesels use it these days :)

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