Im very excited What my EFR 7670 with tial v-band 0.63 ar Can do
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500hp turbos- part 2
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Originally posted by prj View PostLooks pretty bad to me in this day and age. 488hp with max torque at 4500 rpm.
With a decent modern turbo you can have over 600hp with that type of spool.Last edited by Thuppu; 10 June 2018, 14:22.
Audi UrS4 Avant 2.5 20vt - twincharged - Project
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Yeah sure, let's put in 6th gear on motorway and check spool. That's not how this works
Well the dyno is probably one of those ****** inertia ones with 0 load too.
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4:th gear, 3:rd not much difference. The dyno has a breake, I don't know why always live road is a bit different than on dyno..? It has been so on every single dyno I have been on.
But the point in my dyno graph post was just to show what this turbo was capable of with that tiny .48 housing, because there was speculation about it earlier. In the end it is interesting to test something different than just the basic HX35S. Also the budget was tight when I build the engine and the turbo was cheap. Next uppgrade is then someting different. Sorry that I caused your blood pressure to rise with this ****** graph and dyno. Either way I'm quite pleased with the turbo, it has low inertia and fast acceleration after gear change(compared to Holsets) so it feels very nice. Also the dyno is close to me, it is simpple to go there and dyno/tuning time is quite budget friendly.
Audi UrS4 Avant 2.5 20vt - twincharged - Project
Audi 80q B4 Sedan 2.2 20vt - Daily user
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When you have TDI box, then your 4th gear is like normal gearbox 5th or 6th, but doesn't matter.
A/R is only finetuning, the biggest difference is from the turbine wheel.
As for the dyno - you get what you pay for. Simple.
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01A AAR gearbox in the vid. So you say an 54/62 turbo would not go over 500hp with an bigger hot side..?(even if it's oldschool) I suspect it could gain 50+hp with an .82 housing, but it could be too laggy. Would be fun to try a .63 though.
Hmm, what is soo wrong with this dyno..? I don't get it...
Audi UrS4 Avant 2.5 20vt - twincharged - Project
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I think he meant that if Thomas always finds the results different to the real world then the dyno isn’t doing a very good job of replicating real world conditions in terms of load control / ramp ratePanthero Coupé quattro 20vt
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Originally posted by Error404 View PostI think he meant that if Thomas always finds the results different to the real world then the dyno isn’t doing a very good job of replicating real world conditions in terms of load control / ramp rate
And yes, housing matters very little in the end compared to the turbine wheel itself. A GT30 turbine even with 1.06 A/R will flow less than a GT35R turbine with a 0.63 A/R.
The housing is fine-tuning, the turbine wheel is what makes the biggest difference.
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Originally posted by prj
Correct.
And yes, housing matters very little in the end compared to the turbine wheel itself. A GT30 turbine even with 1.06 A/R will flow less than a GT35R turbine with a 0.63 A/R.
The housing is fine-tuning, the turbine wheel is what makes the biggest difference.
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Of course it can make a big difference, but diesel A/R is very different. If you look how the vanes are adjusted then when it's fully open vs fully closed the A/R changes MUCH more than the 0.63 to 1.06.
In the end it's about using the right sized turbine. Also, A/R depends on engine size. For 2.2T I agree, but for 1.8T I'd pick a 0.63 A/R on a GT turbo, and for a 3.2 VR6 I'd go 1.06.
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Originally posted by prjOf course it can make a big difference, but diesel A/R is very different. If you look how the vanes are adjusted then when it's fully open vs fully closed the A/R changes MUCH more than the 0.63 to 1.06.
In the end it's about using the right sized turbine. Also, A/R depends on engine size. For 2.2T I agree, but for 1.8T I'd pick a 0.63 A/R on a GT turbo, and for a 3.2 VR6 I'd go 1.06.
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