Turbo Upgrade

[ETM]

Interesting, I saw a prototype turbocharger that was a gt35 in everyway except for a smaller comp wheel, the part number did not register on the garrett part list and it was rumoured to be the new xr6 turbo.

I guess we will all know soon enough.

[ETM]

dont u start etm no full stop on the end of post 2. :rl:

hahaha nice spotting!

[AzMahoony]

hopkianz has been here for just over a week and he's already copping more flack then Senna does !

:rl:

[seventytwo]

double post, mods can delete

Try saying please, you motherf*cker - I knew you probably wouldn't do it anyway darl

Ah, young love an't it sweet

[RAP1D]

mate there's an endless amount of choices and ways you can get the ultimate response... I dont really think chnaging the turbo will make or break the cars response as such, tuning will have a far bigger impact on how the car drives and picks up boost.

The stock turbo is an ok size, and as ETM said, its let down by poor boost control via its too small internal gate... changing to an external on my car has changed the way the car responds, but that's not to say its a be all and end all decision.

I was lucky enough to drive a 400wkw xr6 fitted with 4.11 diff gears recently, and in my view, this car very good response due to it picking up power and boost straight from the throttle. This had the stock turbo, internally gated.

I would say, if your turbo is stuffed, look for a new externally gated turbo, with larger exhaust wheel/housing to allow more flow through the head/turbo/exhaust, this will bring on power sooner (through less restriction) and increase top end power... if the stock turbo is ok, then keep it and look into other areas that will gain low down response.

The great thing about have a built motor, is you can have it tuned with more timing advance and more boost down low without straining the rods, so maybe look at tuning.

Diff gears (4.11) will bring on boost sooner regardless of all the supporting mods, and is easier/cheaper than changing turbo (and dump/manifold/intake to suit)

[senna_T]

hmmm, good points there chris, this isn't exactly aimed at my car just rather a general question

[JETURBO]

why not tt twin turbo smaller turbo for low rpm range then larger or the standard turbo for later higher boost range .obviously with a by pass or like for the smaller turbo to cut out as the bigger turbo comes in its done on lost of diesel cars ie new peugeot 407 would that not be the perfict situation

[groper]

dude, this is turbo 101 basics again... the turbo needs to be ideally sized for the power you intend to make. Big power you need big turbo and put up with the lag. small power you need small turbo and youll get great response... so 'whats best' entirely depends on what you want???

And whilst im not calling you a liar senna, I highly doubt the FG has a larger compressor... it just doesnt make sense if its running more boost than a BF F6 which has the same power as the FG xr6t... think about it

Edited 08/06/08 12:58 PM by groper

[senna_T]

as I mentioned though groper, Ultimate street turbo. If you go too much power it is wasted in wheelspin, which the standard turbo can do. If its too little power like stock, then its not exactly "ultimate"

Totally agree with you about the new turbo groper, but that's what Ford reckon in their tech run-down...

Edited 08/06/08 01:01 PM by senna_T

[SavageF6]

Re: FG Turbocharger compressor wheel size

The turbocharger has also been down graded to a seven blade 56 trim compressor wheel; the BF had a 6 blade 60 trim wheel. There could be a number of reasons for this ranging from Ford wanting better throttle response to limiting the aftermarket boys with top end increases.

The result of all these engine "upgrades" is that the same engine now requires 4psi more boost pressure to develop the same power as the BF F6 produced. Upgrade or downgrade you be the judge.

Edited 08/06/08 03:06 PM by SavageF6