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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 -
The axels in my R33 seem tired, and have a bit of play in them. I cannot find any new of course, not interested in buying used, but I am looking to see if anyone can identify some cross compatible axles. In the states I have seen suggested for S chassis the J30 axles, however for the skyline (as best I can tell) the lengths are about an inch off (2.5cm) on both sides. R33 my measure L 22" R 24.5" GPT L 22.5" 24.25" J30 L 23.5" 25.5" so shaft length is probably an inch wider. Not sure if someone has another still remanufactured option besides the J30. I figured worst case I can buy a pair tear them down and swap the center shaft. My other option was reaching out to GSP to see if they cannot piece together a set, since the axle stubs are still manufactured, I wouldn't think it be that hard to find a shaft or make a shaft work. -
Potentially some interesting data for some of you here; Hank Iroz from Iroz Motorsport testing a new Xona Rotor 5964S on a Audi RS3 2.5L DAZA motor. https://facebook.com/share/p/14EU18MyDqZ/ Cliff Notes: Turbo has the new Xona XRE compressor aero with an X4C compressor cover, reportedly 0.64 rear housing. 900whp (670kw) @ 37psi, 170k shaft speed, motor is making 2bar (29psi) boost by roughly 3800rpm, 500lbft (670nm) torque by 3500rpm. They overlaid a stock RS3 on USA 91 fuel (red), and a "Stage 2" RS3 on E85 (yellow), and this 5964S (blue) - the 5964S isn't losing any ground to either. Apparently out-flowing their prior tests with a Xona 8264S (green), and this 5964S (white) also has a smaller A/R than that did.
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