Dyno'd 810rwhp 630 torque
Dyno'd 810rwhp 630 torque
I pleased I hit the 800 mark.
SAE corrected
810hp at 7700
630tq at 5700
Chart will be posted as soon I can.
Boost is 25psi falling off to 23psi.
On E85
12* with 0 split at 25psi
13* with 0 split at 23psi
Power climed all the way till I let off.
SAE corrected
810hp at 7700
630tq at 5700
Chart will be posted as soon I can.
Boost is 25psi falling off to 23psi.
On E85
12* with 0 split at 25psi
13* with 0 split at 23psi
Power climed all the way till I let off.
Congratulations!
If I remember correctly, you had your rotating assembly balanced by CLR with your new shaft. Why didn't you you let it go a bit higher in the RPM band? Not being critical AT ALL, just curious as to your reasoning.
T56 still holding up and performing nicely at those RPMs?
Nice work again.
If I remember correctly, you had your rotating assembly balanced by CLR with your new shaft. Why didn't you you let it go a bit higher in the RPM band? Not being critical AT ALL, just curious as to your reasoning.
T56 still holding up and performing nicely at those RPMs?
Nice work again.
Congratulations!
If I remember correctly, you had your rotating assembly balanced by CLR with your new shaft. Why didn't you you let it go a bit higher in the RPM band? Not being critical AT ALL, just curious as to your reasoning.
T56 still holding up and performing nicely at those RPMs?
Nice work again.
If I remember correctly, you had your rotating assembly balanced by CLR with your new shaft. Why didn't you you let it go a bit higher in the RPM band? Not being critical AT ALL, just curious as to your reasoning.
T56 still holding up and performing nicely at those RPMs?
Nice work again.
I had my 20B rotating assembly balanced by CLR as well, and Carlos told me that with dry-sump, I can rev it to 10K RPM all day. Without it, in the higher gears, I'll need to back off when the oil pressure drops off below 100psi, since the OEM oil pump is designed for a 2 rotor, it can't flow enough volume up top. Perhaps this is the case.
Impressive numbers nonetheless! I'm really curious to find out what was the 1 degree timing change that costed you 100 hp???!!!
Yes, it is balanced. It does make a difference. You can feel it reving smoother and quicker. I will be bumping up the rev limiter to 9k again. I set it lower because I thought there was no point of spinning it higher if the boost is already faling off above 7k. Guess I was wrong.
Besides it was getting late and I was tired, plus I had a 70 mile drive home.
T56 is holding up great. I have shifted it above 8500 a few times. No issues,still smoth.
Besides it was getting late and I was tired, plus I had a 70 mile drive home.
T56 is holding up great. I have shifted it above 8500 a few times. No issues,still smoth.
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Performance Veteran...
Joined: Dec 2007
Posts: 146
Likes: 5
From: MD/VA/DC metro area...
Any plans to turn it up to at least 28-to-30psi?
Jesus, it looks like you left a lot of hp on the table by reving to only 7700... As long as you have good oil pressure, you can rev to 10K all day. The torque curve is not bad for such a big turbo, it looks like you have 300 lbs of torque at 4150 rpm (70mph), if you lifted off at exactly 7700 rpm (130mph)
You can also turn down the boost slightly to 23psi across the board, achieving same peak hp (bragging rights) with less stress on the motor. I'd venture to guess that you'll top out at 840whp at 8400 rpm, Trading some rev for boost would be a good thing!!
You can also turn down the boost slightly to 23psi across the board, achieving same peak hp (bragging rights) with less stress on the motor. I'd venture to guess that you'll top out at 840whp at 8400 rpm, Trading some rev for boost would be a good thing!!
Last edited by chohakai; Sep 3, 2009 at 10:22 PM. Reason: math was off
Love your numbers. If he can put down anything like that reliably, its more horsepower than anybody needs or wants. With enough rubber, there's nothing around that should beat this thing in any race I can think of. Not in a road race, maybe, but everything else. Almost 4 times the horsepower of the stock car. Jesus. I prefer fewer ponies, but it would be fun to get in this thing and go hunting Porsche turbos and Ferrari F430's.
Gordon
Gordon
With my 20B 911, I'm shooting for 550whp with 10psi with a 75mm turbo (smaller), but at 8500rpm, with a extended port and phased rotors, I'm trying to trade some revs for boost. I'm all about the response and drivability, trying to mimic the power curve and the sound of an exotic high reviving NA V12 with my motor setup.
Once I've enjoyed the car for a while, then I'll add water injection later and turn up the boost to 15psi.
Jesus, it looks like you left a lot of hp on the table by reving to only 7700... As long as you have good oil pressure, you can rev to 10K all day. The torque curve is not bad for such a big turbo, it looks like you have 300 lbs of torque at 4150 rpm (70mph), if you lifted off at exactly 7700 rpm (130mph)
You can also turn down the boost slightly to 23psi across the board, achieving same peak hp (bragging rights) with less stress on the motor. I'd venture to guess that you'll top out at 840whp at 8400 rpm, Trading some rev for boost would be a good thing!!
You can also turn down the boost slightly to 23psi across the board, achieving same peak hp (bragging rights) with less stress on the motor. I'd venture to guess that you'll top out at 840whp at 8400 rpm, Trading some rev for boost would be a good thing!!
I just didn't want to get too greedy. I'll put it on again in a couple of weeks and run it to 8500. I would like to smoth out the couple blips in the torque curve.
then run at 20psi(spring pressure), 23psi, then 25psi again. Just to see how much it changes.
Senior Member
Joined: Jun 2001
Posts: 599
Likes: 0
From: Austin, TX
Congratulations! The car sounds great. Love the video.
You sure the pressure drop off isn't just due to your boost control system?
I see people talk about "running out of turbo" when they see boost pressure drop and don't think this is what's happening. The turbo would over-rev and go outside of it's efficiency range before it would drop boost - wastegate responding to lower-than-target boost pressure would close to try to achieve the target. I think you'd see turbo damage from over revving before you'd see boost taper off if the wastegate is closed.
Anyone else think differently?
I see people talk about "running out of turbo" when they see boost pressure drop and don't think this is what's happening. The turbo would over-rev and go outside of it's efficiency range before it would drop boost - wastegate responding to lower-than-target boost pressure would close to try to achieve the target. I think you'd see turbo damage from over revving before you'd see boost taper off if the wastegate is closed.
Anyone else think differently?
Performance Veteran...
Joined: Dec 2007
Posts: 146
Likes: 5
From: MD/VA/DC metro area...
PS; the ITS80mm's are usually good for very close to ~1000rwhp on 2JZ (Supra's) so i know they CAN flow...
Full Member
Joined: Feb 2008
Posts: 190
Likes: 0
From: Orlando, Florida
Love your numbers. If he can put down anything like that reliably, its more horsepower than anybody needs or wants. With enough rubber, there's nothing around that should beat this thing in any race I can think of. Not in a road race, maybe, but everything else. Almost 4 times the horsepower of the stock car. Jesus. I prefer fewer ponies, but it would be fun to get in this thing and go hunting Porsche turbos and Ferrari F430's.
Gordon
Gordon
Congratulations! The car sounds great. Love the video.
You sure the pressure drop off isn't just due to your boost control system?
I see people talk about "running out of turbo" when they see boost pressure drop and don't think this is what's happening. The turbo would over-rev and go outside of it's efficiency range before it would drop boost - wastegate responding to lower-than-target boost pressure would close to try to achieve the target. I think you'd see turbo damage from over revving before you'd see boost taper off if the wastegate is closed.
Anyone else think differently?
You sure the pressure drop off isn't just due to your boost control system?
I see people talk about "running out of turbo" when they see boost pressure drop and don't think this is what's happening. The turbo would over-rev and go outside of it's efficiency range before it would drop boost - wastegate responding to lower-than-target boost pressure would close to try to achieve the target. I think you'd see turbo damage from over revving before you'd see boost taper off if the wastegate is closed.
Anyone else think differently?
15psi spring pressure = 25psi falls to 21-22psi
20psi spring pressure = 25psi falls to 23psi
20psi spring + shims = 27psi falls to 23psi
Any other sugestions to check, I am open to them.
I asked this question more then a year ago. I messed with the spring and same result. Even setting the the controller to 29psi if falls fast to 25 then 23.
15psi spring pressure = 25psi falls to 21-22psi
20psi spring pressure = 25psi falls to 23psi
20psi spring + shims = 27psi falls to 23psi
Any other sugestions to check, I am open to them.
15psi spring pressure = 25psi falls to 21-22psi
20psi spring pressure = 25psi falls to 23psi
20psi spring + shims = 27psi falls to 23psi
Any other sugestions to check, I am open to them.