GT3076R to GTX3076R (Upgrade review) *************UPDATE, Now = GTX3576R !!!

[Jordan Kruger]

This will end up being summarized with dyno results, but only the results from the GTX turbo will be posted,  due to the fact that I havent ran my GT3076R before doing this upgrade. However, I could post the results in comparison to my older setup using a GT3071R.

I visited ADP distributors in langley, and discussed upgrading my GT to a GTX, and they offered to find me a wheel.  I ended up chatting with them later in the week and they had found me a billet GTX wheel from one of their suppliers.  I was able to get the wheel for $200.
This upgrade has well documented results already, and there is NOTHING but good things to be said about the upraded billet wheel.
It provides a higher pressure ratio it doesnt fall on its face as hard as a standard GT30. Infact, there were tests done with the GT3076r in comparison to another GT30 with an upgraded billet wheel ( similar design to GT series wheel, but not GTX style)  And both the standard GT30 and hybrid GT30 actually out performed its larger arch rival, the Precision 6262.  The previous billet wheels showed gains over the standard wheel, however they arent as impressive as the new GTX wheel.  Looking at the maps, it appears every GTX turbo excels over its previous GT series.  The GTX3076R is basically a replacement for the GT3582R. Its that efficient!





I bought a GTX compressor cover and decided to compare their contour and see where the blade has its differences. Ill be getting the blade later this week and giving ADP my turbo, to swap in the new wheel and balance the assembly.
With that being said, ive only been able to compare my compressor covers,  but just by setting the GTX cover on my GT3076R, you can see how the blade will be slightly larger. The blade has lots of room around it when the GTX cover is placed over it, and the contour of the blade will be different with the GTX wheel aswell.  This space may change a bit if the GTX cover requires any profiling to fit the wheel.  Ill post any changes that may be made. The service at ADP distributors is awesome and I should end up with a killer turbo.

Ill be sure to post up pictures once the swap is done.   And sum everything up with some dyno results.

** First set of pics are the Standard GT30 cover, and second set of pics are with the GTX cover on.

[Jesse Veitch]

That's a lot more flow, pretty impressive.

I wonder if I can get a GTX wheel and new cover for my L1R.

[Jordan Kruger]

You can get billet GTX style wheels for almost anything now.  Call ADP and get them to track one down!

[Robert Vorley]

One should consider that with the added flow comes the added risk of compressor surge.

 I have been experiencing it with part throttle pulls.  Two methods that I may try to combat it are a better exhaust manifold design to maintain velocity and improve scavenging effects and a larger a/r exhaust housing (from .64 to .82).  The better mani plus a larger a/r will add significant power but the housing will likely add more lag, which is already significant below 5000rpm.

This turbo would probably be a better match for those that run a 2.3l or do track racing with a 2.0l.

[Lowell Foo]

TPS based boost control, and a correctly functioning blow off valve will eliminate surge.

[Robert Vorley]

TPS based boost control, and a correctly functioning blow off valve will eliminate surge.

Sounds like a good work around. Shaun reconditioned my greddy rs but I think it is past its useful life without a rebuild. Im planning on eventually installing my new Tial bov.  Although your suggestion to modify a 1g bov is very tempting the 50mm has so much more bling.   

[Jordan Kruger]

When I switched to a greddy type R, I noticed way better throttle response (with 3inch charge piping).  I had a tubular manifold with tial external 38mm gate, along with a custom long radius downpipe.   So theres no comparison really, but the Bov did provide noticeable gains. And there was no sign of surge.  I was able to dial the bov in perfectly. 
Im using an antisurge compressor cover, so it should be a good setup to fight surge.  The Greddy type R is BIG.  and has a 46mm outlet.   And it gives off the best bov CHUFFFF ive ever heard.

[Lowell Foo]

TPS based boost control, and a correctly functioning blow off valve will eliminate surge.

Sounds like a good work around. Shaun reconditioned my greddy rs but I think it is past its useful life without a rebuild. Im planning on eventually installing my new Tial bov.  Although your suggestion to modify a 1g bov is very tempting the 50mm has so much more bling.   

http://i183.photobucket.com/albums/x237/joejoe69_album/typesdiagram-1.jpg

Ignore the FPR part though.  Any valve without dual ports like stock will be prone to surge. 

[Robert Vorley]

Previously my 5857 turbo would also surge albeit mildly.  It came with the anti-surge cover.  It spooled about 500rpm later which helped.

The gtx3076r produces turbo/engine damaging amounts of surge.   Wot it isnt an issue or slow roll on. Part throttle under load and under 5000 sucks.

[Jordan Kruger]

Get a greddy type R bov.   I could literally dial out all surge on my 3071 with no antisurge cover.  And I have 3 inch charge piping.  So it has a bigger mass of air pressure to let go than most setups.   I ended up setting it to have a tad or surge at really low RPM because the BOV reacted perfectly at high boost levels like that.   It would allow a nice rollover of power into the next gear.

[Jordan Kruger]

Turbo upgrade went as planned.  I will have some dyno comparisons shortly,  as there is a particular member testing both the standard GT3076r  versus my new hybrid GTX3076R on a particular mustang dyno on a built 6bolt 1g.     Results will be posted shortly. 

[Brett Haviland]

when is ur car going to be ready?  did you get a new block all iron'd out?

[Jordan Kruger]

I'm swapping shells over the next couple weekends, and my engine is being assembled this week at rg.  Once everything is in the new shell, the car will be going back to rg for some custom piping and break in tune.  So she's getting closer. 

[Robert Vorley]

Did you stitch weld the new shell?

I would expect 50-60hp more between turbos for a little more lag.

Look forward to the charts.

[Jordan Kruger]

No stich welding has been done.    I plan to give the car a 5point cage and add reinforcement to the areas on the floor behind the driver and passenger seat. That area tends to crack on the 1g's.

This turbo comparison should give everyone a good idea as to what an upgraded inducer can do.  I laughed and said it would be funny if I made 50whp less with the GTX wheel  haha