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You think your turbo is big?

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strapping young lad:
go have a butchers at my gallery (latest pictures uploaded)

a mazda rx7 has a turbo so big n heavy it has its own chassis mount and the other is nice n pink in an R34 skyline gt-r

both unfiltered and go like stink (saw them shift round castle combe today)

Henry Webster:
Big turbo sounds like a recipe for big lag - are you sure that this is not more show than go! :wink:

strapping young lad:
dunno but they take off like nobody's business and the dump valve can be heard from a fair distance

these are jap HKS turbos and cost an absolute fortune (i think one skyline has 1000bhp)

rx7 btw is rotary not piston so it probably works in a different way

looks mint though

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.

Heres a Lotus V8 Giving it some :

strapping young lad:
i dont have a turbo anymore and in my disco i never noticed the advantage so i couldnt say from experience but they look mint


oh and the engines dont leak oil ;)

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