Fg Turbo Options(non F6)

[djkice]

Just thought I would start the topic, so that people can discuss turbo options for the FG Turbocharger as it will be a restraint in making the common power that most of us enthusiasts want. I feel nobody has REALLY covered the topic throughly enough and needs to be addressed so us XR6T/G6ET owners know what our options are. Hopefully with any luck it may save some FG owners the debarkle which I am having currently.

For those of us who don't know the story already, FG XR6T runs a smaller compressor wheel than the BA/BF, FG F6 Turbo. It is roughly a 52mm inducer/76mm exducer and 7 blade.. 47 trim wheel. It does have some very outstanding spooling capabilitys. With this unfortunatly comes a trade off, being unable to make larger power like previous models. Fair enough it is understandable you can't have the best of both worlds but what about something inbetween?

I am pretty sure it's not rocket sceice if we are chasing big power the best option to upgrade to the BA/BF Turbo.. Whether it be complete front section or just upgrade the comp wheel. You would then pretty much have a BA/BF XR6T in a FG shell.. yay..

For those of us chasing 330-350ish im sure would be more interested in preserving the stock turbo, if possible and modifying it to make just that little bit more power and retain the "characteristic" which was given to us from factory. Which is a hard thing for me to sacrafice being used to it now.. its just leathal and is very cool indeed.

As far as my reserach goes, there is too many options and my mind is overloaded... Many different combinations and all have their ups and downs... Hard to make a decision and need to make one pronto... I would also like to take this moment to thank anyone who have given me their opinions, cost of options and going out of their way to try help me out... It is greatly appreciated..

Let's get into it now.. There is many varients of recommendations out there... The only common recommendation being high flowing... As for everything else read below....

Twice I have heard of a comp wheel inbetween the fg xr6t and the ba/bf xr6t.... but everyone who mods turbos that I have consulted said their is no such thing which is a big downer as this is what I want if it is truely possible.

On another occasion I have been told that I should run an external wastegate to get the most out of my stock turbo and upgrade front cover. But this would require a custom manifold... (dont mind as this is still cheaper than upgrading compressor wheel). ??

Another opinion was to upgrade to T04Z comp wheel aka 66mm comp wheel which supposidly is supposed to work and make a lot more power... Although asking others about it they just recon the rear exducer wont support the same amount as flow as front and will just result in uber lag although may make slightly more power its going the opposite way in which what I want to acheieve.

One occasion I have been told the BA/BF turbo spools quicker than the FG

Last option would be just to highflow my stock turbo to see what power I can get out of it although I don't think it will make much more, possibly even just upgrade front housing... Although this will be costly excercise if it doesn't make the power I want to make as I will have to end up after all upgrading to the BA/BF turbo in the end.

Look forward to contributions and any other opinions...

Edited 30/03/09 04:12 PM by djkice

[PHANTMXR6]

Sounds like you need to talk to Simon at Nizpro.

He has stated there is an 'in between' compressor wheel for the FG XR6T that will increase the output to what you are after.

You must have been reading a lot of forums to come up with 'inducer' and 'exducer'.

Correct turbocharger terminology is compressor wheel, on the induction side, and turbine for the exhaust wheel.

A custom manifold upgrade would be far more expensive than a compressor wheel upgrade wouldn't it?

[PHANTMXR6]

Try reading this.

www.dieselpowermag.com/tech/general/0706dp_turbocharger_glossary/c_i.html

It may help you understand a few more things about turbocharging.

[senna_T]

BA/F or FG F6 turbo mate, with a good exhaust and intake, correct wastegate actuator it will be more than responsive and still make big power.

[gilfxr6t]

Based on my very limited technical knowledge of the mater I would agree with this method. There are plenty of gains to be made throughout the rest of the system so you might as well go down the path well travelled and get a BA/BF turbo. I guess it comes down to what you want out of it and I could be totally off the mark but I would have thought that given our gear ratios, a big meaty torque curve would be the best for a car that weighs 2000kg.

If you want ultra responsive, keep your standard turbo, do your intake and exhaust, kick the girlfriend and spear tyre out, loose 15kg and you should be right.

Or just steal a turbo of a new Porsche…

[djkice]

wastegate + manifold = $1500

comp wheel = 1800ish probably more

as for my terminolgy that is I beleive slang for certain parts which I used? I know the correct terminology but when ever I talk to say example someone who does modifications to turbos they use those words.

but it's not like I dont know how a turbo works or what the correct terminology is :/ I did some fair reading up before speaking to people about mods(dont wanna sound like a dumb sh*t not knowing what sh*t was)

Edited 30/03/09 11:44 PM by djkice

[Benny]

Sounds like you need to talk to Simon at Nizpro.

He has stated there is an 'in between' compressor wheel for the FG XR6T that will increase the output to what you are after.

You must have been reading a lot of forums to come up with 'inducer' and 'exducer'.

Correct turbocharger terminology is compressor wheel, on the induction side, and turbine for the exhaust wheel.

A custom manifold upgrade would be far more expensive than a compressor wheel upgrade wouldn't it?

Inducer and exducer is referring to the compressor wheel sizing only I thought.

Benny

Edited 31/03/09 01:46 AM by Benny

[Tocchi]

manifold - $1300 (6boost)

gate - $800 (tial 44mm or progate 50mm)

compressor wheel + compressor plate + comp cover < $1k (through MTQ in malaga)

and last time I was there, MTQ needed 0.5A/R housings badly, and were doing straight swaps with the 0.7A/R ones they had

exducer = outer blades edges

inducer = inner plate edges

I made you a pretty photo lol

eg: when I upgraded my XR6Ts turbo, the specs were

front A/R 0.70

front wheel: inducer = 66mm, exducer = 84mm

rear A/R 1.15

rear wheel: inducer = 50mm, exducer = 75mm

[Venom XR6]

An FG 270 with a BA/F turbo will not have as much lag as an equivalent BA/F XR6 Turbo, both with standard inlets, due to the FG's much shorter inlet tract. This is also part of the FG's quicker spool up as well as the smaller turbo.

The best way to see how much lag a BA/F turbo has in an FG is to drive an FG F6. It uses the BA/F turbo with the reduced FG inlet tract. I'm sure someone who has driven both back to back can comment on any difference in spool up between FG 270 and FG F6.

[tinyplums]

dj, you got a dyno graph so I can see how much quicker this thing spools.

you heading down the drags now you got boost back?

ill be there 2moro spectating, you can bring the 20 then.