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Old 06-25-2007, 09:34 PM   #1
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Default M1+V8+track+Turbo?

http://www.youtube.com/watch?v=KCclA3wiLgQ

It's an interesting watch.... Bueller? Bueller?

Dave,
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Old 06-25-2007, 09:42 PM   #2
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Hell, I could just listen to that over and over.
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Old 06-25-2007, 10:21 PM   #3
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not to horrid for 5 psi.
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Old 06-25-2007, 10:50 PM   #4
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twin seems pointless. but cool!
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Old 06-26-2007, 12:16 AM   #5
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wow. That car looks pretty much useless with that much power. But that would be a bad *** daily.
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Old 06-26-2007, 12:17 AM   #6
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yeah. spin city interesting though
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Old 06-26-2007, 12:19 AM   #7
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twins were easier maybe? lol.

That was sweet.
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Old 06-26-2007, 02:41 AM   #8
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ive soiled myself
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Old 06-26-2007, 09:59 AM   #9
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Quote:
Originally Posted by miatamania View Post
twins were easier maybe? lol.

That was sweet.

It's not like he put one turbo off each side of the exhaust; he split a single exit exhaust to accept both turbine inlets...one good sized turbo would probably have more potential, since running twins at 5psi just means 2.5psi each. I mean it works, but it could be better.
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Old 06-26-2007, 11:01 AM   #10
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i might be wrong but im gonna have to disagree with you on the 2.5psi each equalling 5psi braineack, both turbos will be at 5psi just flowing more cfm

though it is pointless to split a single pipe for twins
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Old 06-26-2007, 11:27 AM   #11
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If he's running 5 PSI of boost, as measured at the intake manifold, then each turbo is outputting 2.5 PSI. If they were putting out 5 PSI each, then he'd have 10 PSI of boost.
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Old 06-26-2007, 11:40 AM   #12
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you also split the required CFM for each turbo, not flow more.

so for example, he says it's making 356 at the flywheel.

required airflow for that is 39.12 lb/min or 566CFM. each turbo needs to flow 19.56 lb/min (283CFM)
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Old 06-26-2007, 12:26 PM   #13
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Quote:
Originally Posted by Braineack View Post
It's not like he put one turbo off each side of the exhaust; he split a single exit exhaust to accept both turbine inlets...one good sized turbo would probably have more potential, since running twins at 5psi just means 2.5psi each. I mean it works, but it could be better.
Maybe he did it that way to reduce intake temps?
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Old 06-26-2007, 12:44 PM   #14
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you could possibly argure, that it's easier to find a more efficient map with two small turbos to work within 1.35PR and 20 lb/min as opposed to one turbo at 1.35PR and 40 lb/min.
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Old 06-26-2007, 12:56 PM   #15
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Sirnixalot and scott are 1/2 correct. Each turbo is putting out 5psi at 1/2 of the overall airflow. You look at the compressor map at 5psi and 1/2 flow, not 2.5psi and 1/2 airflow.
Quote:
Originally Posted by Braineack View Post
you also split the required CFM for each turbo, not flow more.

so for example, he says it's making 356 at the flywheel.

required airflow for that is 39.12 lb/min or 566CFM. each turbo needs to flow 19.56 lb/min (283CFM)
That's right, but at 5psi, not 2.5.

I would love it to be the other way around. Then my two turbos would have lots of headroom instead of blowing hot air.

Think about it like this. If you have two air compressor tanks (or turbos) at 100psi at either end of your warehouse and you join the two tanks with a pipe, you still have 100psi in the pipe, not 200psi. Now you hook up a big *** die grinder to the pipe that requires 300cfm at 100psi to operate. Each of the two air compressors must produce 150cfm at 100psi to supply the die grinder.

Last edited by TurboTim; 06-26-2007 at 01:14 PM.
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Old 06-26-2007, 01:41 PM   #16
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professor tim!
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Old 06-26-2007, 04:56 PM   #17
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yeah what tim said :gay:
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Old 06-26-2007, 05:08 PM   #18
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356 bhp. almost doesn't seem worth the effort to use another motor...
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Old 06-26-2007, 05:23 PM   #19
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Quote:
Originally Posted by TurboTim View Post
Sirnixalot and scott are 1/2 correct. Each turbo is putting out 5psi at 1/2 of the overall airflow. You look at the compressor map at 5psi and 1/2 flow, not 2.5psi and 1/2 airflow.
That's right, but at 5psi, not 2.5.

I would love it to be the other way around. Then my two turbos would have lots of headroom instead of blowing hot air.

Think about it like this. If you have two air compressor tanks (or turbos) at 100psi at either end of your warehouse and you join the two tanks with a pipe, you still have 100psi in the pipe, not 200psi. Now you hook up a big *** die grinder to the pipe that requires 300cfm at 100psi to operate. Each of the two air compressors must produce 150cfm at 100psi to supply the die grinder.

yeah, correct, you should know...silly thing is i knew that, I was still looking at 1.35PR and half the CFM....as in #14
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Old 06-27-2007, 12:47 AM   #20
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The car is awesome. The driver needs to suck less.
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