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High Flow


Adz2332
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Taking say a stock R33 turbo and fitting larger internals by means of machining the housings to fit them.

Here are a couple of pictures to show the differences.

Highflow turbo:

comp-side.jpgexh-side.jpg

Standard rear housing:

cid7ziskpe3oipy6.jpg

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Highflows are generally direct bolt on items with no requirement for modification for intake and exhaust.

They are the best bang for your buck upgrade you can get for 250+rwkw

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Highflows are generally direct bolt on items with no requirement for modification for intake and exhaust.

They are the best bang for your buck upgrade you can get for 250+rwkw

what sort of money would you be looking at for one of these turbos?

and what kind of mods would you need to make 250Kw at the wheels apart from the turbo? my car has 204.5kw now. Also my car comes on boost lik straight away no lag at all, changing the turbo over to one of these would it be much different in when the boost kicks in?

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it isn't really much trouble since there are nice people like slide who do the hard work for you. you just have to unbolt the old turbo and bolt up the new turbo.

cost wise slides are about half the price of a new turbo that will deliver similar results.

then there is the problem of having to alter dump pipes, oil and water lines for different turbos.

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gcg do an exchange service. you have to remove your turbo, send it away, they send you one back and then you bolt it back on. it is a ball bearing unit and it costs about $1800.

slides aren't an exchange unit. and about $900. they are only a bush bearing.

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gcg do an exchange service. you have to remove your turbo, send it away, they send you one back and then you bolt it back on. it is a ball bearing unit and it costs about $1800.

slides aren't an exchange unit. and about $900. they are only a bush bearing.

whats a bush bearing? and whats the diff between bush and ball bearings?

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Alll the questions have already been answered many times before in the forced induction section of this website :P

Ball bearing vs journal bearing: For these size frame turbo's the differences are not noticable enough to hinder performance.

http://www.skylinesaustralia.com/forums/in...=131723&hl=

and if this was the only mod done to ur car...wat type of power gain u lookin at in a 32?
This thread was set up by a member on the forum to document the great results he achieved along with others with one of my turbo's on an RB20DET ;)

http://www.skylinesaustralia.com/forums/in...howtopic=142615

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Just to throw an oar in, the difference between bush and ball bearing from an engineering perspective is very little in terms of performance, however a bush will wear slightly faster than a ball bearing. In operation they both run on a film of oil so there is zero wear, but at startup or switch off the bush will spend a miniscule amount of time with the metal surfaces contacting. Taken over a very long period of time the wear adds up, but consider that the stock GTR32/33 turbos are bush and many are still running strong today there is really nothing to worry about if you take the time to warm up and switch off with some thought for the mechanical components of your car.

Many also consider that a BB will spool faster, but this is mostly due to newer technologies used to lighten the rotating parts of the turbos with BB and not any specifics of the BB vs bush system, while most bush systems have remained static development wise for quite some time.

Finally, a highflow still looks exactly the same externally when visually inspected so remains technically completely legal. So for a stock looking setup the value for money remains with the bush bearing at about half the cost of the BB, and that is exactly the direction I have taken.

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