Jump to content
SAU Community

Recommended Posts

Curious to know what others think of this data point, this is supposed to be a more modern twin turbo setup for the RB26 vs a GTX3582:

image.thumb.png.8815dc2baabb1ab598385e6d06fe1dee.png

"More info Twins vs Single. 4WD mustang dyno, 92 octane, similar weather condtions, Step 2 V-Cam, 272 exhaust cam on both, both running metal cats.

Blue run are the DR500 twins
Orange run is GTX 35/82

Again this is just more info for everyone. Each of you will have your own opinions on what setup is better. Its coming to my attention that when we post up data, that we have collected, and speak highly of our results its because we are in love with what we do! Its unfortunate that it has come across as being competetive and that is not our intent. The information is there for you to use, only if it applies to what you want to accomplish with your GTR.

And yes we have watched the Motive video."

Link: 

Looks like the turbos are made by Spectrum Motorsports in 42R configuration: https://www.spectrummotorsportssolutions.com/products/r32-r33-r34-rb26-smr600

Link to comment
https://www.sau.com.au/forums/topic/480785-revisiting-single-vs-twins/
Share on other sites

It's also a shame it's a shop comparing their turbos to others..........

 

Based on this post the extra 5psi on their twins gained nothing up top https://m.facebook.com/photo.php?fbid=3537861622909572&id=136477713047997&set=a.1284279384934485&refid=13&__tn__=%2B%3Dp...

  • Haha 2
32 minutes ago, Ben C34 said:

It's also a shame it's a shop comparing their turbos to others..........

 

Based on this post the extra 5psi on their twins gained nothing up top https://m.facebook.com/photo.php?fbid=3537861622909572&id=136477713047997&set=a.1284279384934485&refid=13&__tn__=%2B%3Dp...

The man is on the hunt for data! Lol

Its very hard to believe unfortunately as my experience driving the whole garden variety of twins on literally every capacity engine has been VERY different to what these guys are pushing 

8 hours ago, Mick_o said:

The man is on the hunt for data! Lol

Its very hard to believe unfortunately as my experience driving the whole garden variety of twins on literally every capacity engine has been VERY different to what these guys are pushing 

I've been wondering how they've been doing it too, they tend to get results that others don't. 

image.png.3be6d0a274ab4026edf49bf1c954b254.png

3 hours ago, joshuaho96 said:

I've been wondering how they've been doing it too, they tend to get results that others don't. 

they are selling twins.....

 

 

above is my amazing work overlaying the 2 graphs. it seems pretty pointless but i did it!!

 

I dont think a shop positng photos of a dyno monitor is really providing data. Heaps more info is needed for proper comparison otherwise it is alll just lines on a page.

oh and for that crazy work above i matched the powev figure and x axis (sort of), the boost axis didnt match but doesnt really matter.

 

 

DATA!

Next question, is it even a genuine Garrett GTX3582? If it's an US home brew junk or a Dimsum special, it's not going to perform.

Also it's from America, the data is not even worth the server space.

 

  • Like 2
  • Haha 6
24 minutes ago, GTofuS-T said:

They also posted a twins with V-Cam off and the gtx with V-cam on and they were almost identical... seems fishy... perhaps the gtx cars v-cam if fooked?

Tuned by the marketing team maybe?

  • Like 1
  • Haha 3
1 hour ago, GTofuS-T said:

kind of irrelevant when they're not claiming the twins produce more power, just that the power is on earlier and so more enjoyable to drive

Which is a dumb comparison. A smaller single will do that. Their own data seems to show that their twins are all in a that power, extra 4 or 5 psi made no difference to peak. Give the gtx35 an extra 5 psi and see what happens....

  • Like 1
8 hours ago, Ben C34 said:

Which is a dumb comparison. A smaller single will do that. Their own data seems to show that their twins are all in a that power, extra 4 or 5 psi made no difference to peak. Give the gtx35 an extra 5 psi and see what happens....

Not a great comparison point because it's VCAM step 2 vs step 1 but they did have an EFR7163 VCAM step 1 comparison:

image.thumb.png.d6d54eebc5b243489589e2bd718aa8cf.png

"The Black run is a Step 2 V-Cam with a GTX 35/82
The Blue run is a Step 1 V-Cam with a EFR 7163
The Orange run is NON V-Cam with our DR500s


These runs were all done in 4wd with 92 octane in similar weather conditions. I tried to grab an average run from each turbo setup as not be to be misleading."

Also seems like people like the G25-660 for big power which is surprising to me: 

 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Hi all. Been a while but things are moving along. I just have something that I am wondering about. Since I will use OEM turbo oil pumbing, I got myself a new bolt, the one that goes into the engine block oil feed. As I recall (and see visually) this bolt comes restricted with I think a 1.7mm hole? Not quite sure but it was something around that size. The turbos have 1mm restrictor bolts installed, as necessary due to ball bearings and my higher oil pressures. Can I now just use that OEM bolt with the 1.7mm hole in for the engine block or will this actually be too much oil flow restriction and I have to drill it out first? In my head it would make sense for the bolt to be at least 2mm wide as both turbos take "1mm of oil flow". Do let me know if my logic is flawed here, I just want to make sure I don't kill my turbo bearings with too little oil. Don't know if I can trust the saying I read somewhere that ball bearing turbos essentially only need an oil mist
    • There are several aftermarket options available, from not-too-painful moneyhttps://justjap.com/collections/driveshafts-bearings/products/d-max-reinforced-replacement-rear-driveshaft-set-fits-nissan-s13-s14-s15-r32-r33-r34-c35 and  https://justjap.com/products/crank-motorsport-billet-rear-axles-fits-nissan-skyline-r33-gts-t-r34-gt-t?srsltid=AfmBOorQk4xkGUa98kO7v2ePLUiNt-HRrM2AwWNw9mbSIVE1ujBVwY__, all the way up to The Driveshaft Shop https://driveshaftshop.com/skyline-cv-axles/
    • Yeah based on old XRC5964S specs, it looks to be roughly GTX3576R sized? But this 5964S compressor will flow 90lb airflow somewhat similar to the compressors in both the GTX3584RS or G35-1050.. I fully expected the 0.64 rear A/R to choke up top - seems way too small from typical convention - but these are seemingly beneficial over the prior 0.82 results.. Be interesting to see if he comments on the EFR question in that thread - he mentioned in a prior video that BW EFR's were the "cats pajamas 10 years ago", but by the sounds of things all his kits have been using Xona for quite a while now.
    • Yeah it’s still got the oem manual gearbox and clutch, only kinda mods are a blow off valve, coil overs, and a aftermarket intercooler. Also had it for about 2 months now with a lovely midnight purple paint on it.
    • Yeeeppp, been following a lot of the testing on the latest Xona stuff and there are some mental results.  He also went over 1000hp @ 4 hubs on his Mainline with a XRE6364S (63mm) which was also well into the 20psi range before 4000rpm on a 2.5. Crazy stuff. Fwiw the XRE5964S is basically the modern equivalent of their old HTA3582 - would drive nicely enough on an RB25 or 26, but proven capable of a huge amount of power if you want to spicy with rpm tho even at sane boost levels will make stout numbers 
×
×
  • Create New...