TwinTurbo.NET: Nissan 300ZX forum - Yes, I know that....
Subject
Yes, I know that....
Posted by
sorka
on November 18, 2005 at 2:07 AM
This message has been viewed
62
times.
In Reply To
You math isn't correct as there isn't a linear relationship
posted by Ash's Z
on November 18, 2005 at 02:00 AM
Message
But assuming volumetric efficiency goes down as boost increases, it would make my estimates even higher than they are. I'm being conservative by leaving that complication out.
Follow Ups
Anyone have MAF readings from your dyno runs?
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sorka
22:45:53 11/17/05
Tons of datalogs. Here you go (from the data we collected
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Ash's Z
23:31:26 11/17/05
Thanks....nice info
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Seb (Specialty-Z)
01:22:02 11/18/05
Give me a moment and I'll export the data and plot it (n/m)
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Ash's Z
01:24:15 11/18/05
Re: Give me a moment and I'll export the data and plot it (n
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Seb (Specialty-Z)
01:26:57 11/18/05
Here it is.
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Ash's Z
01:53:48 11/18/05
Re: Here it is.
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Seb (Specialty-Z)
01:59:03 11/18/05
Nah, I'll spend the time on them as my progression in
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Ash's Z
02:03:44 11/18/05
Re: Nah, I'll spend the time on them as my progression in
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Seb (Specialty-Z)
02:11:20 11/18/05
Yeah, I'm going to bed.. Its 3AM here.. I'll send them over
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Ash's Z
02:15:59 11/18/05
My dual MAF setup never hit higher than 3.82v
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2960cc of fury (Houston)
00:39:54 11/18/05
Anywhere from 17-20 degrees of timing on 93 is fine. (n/m)
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Ash's Z
01:18:25 11/18/05
What kind of boost pressures would you recommend him
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Seb (Specialty-Z)
01:24:22 11/18/05
I think you are confusing CAS timing vs. ignition timing map
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Ash's Z
01:56:41 11/18/05
Re: I think you are confusing CAS timing vs. ignition timing
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Seb (Specialty-Z)
02:07:50 11/18/05
Yes I am referring to the actual timing maps, my CAS
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2960cc of fury (Houston)
08:52:46 11/18/05
I can email you my log in excel format if you would like (n/m)
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2960cc of fury (Houston)
00:41:07 11/18/05
Any single POP data?
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sorka
01:04:36 11/18/05
Something wasn't right with that data.. The MAS maxes
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Ash's Z
01:16:40 11/18/05
Um.....
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sorka
01:41:22 11/18/05
Sure sign of a boost leak there.... Your MAS voltage
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Ash's Z
01:58:00 11/18/05
No boost leak...
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sorka
02:05:21 11/18/05
Re: No boost leak...
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sorka
02:12:36 11/18/05
Re: Something wasn't right with that data.. The MAS maxes
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sorka
01:43:53 11/18/05
4.54 volts single pop == 3.67 volts dual pop.
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sorka
02:47:20 11/18/05
Check out this data before and after SS DPs....
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sorka
01:37:52 11/18/05
You math isn't correct as there isn't a linear relationship
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Ash's Z
02:00:51 11/18/05
Yes, I know that.... -
sorka
02:07:00 11/18/05
Take it to the dyno and show me a 29HP increase. (n/m)
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Ash's Z
02:09:50 11/18/05
Re: Take it to the dyno and show me a 29HP increase.
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sorka
02:16:19 11/18/05
BTW, volumetric efficiency is unrelated to boost - it is a
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Ash's Z
02:14:35 11/18/05
Which is why I made the comparison before and after at the
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sorka
02:28:43 11/18/05
There isn't even a linear relationship between AIRFLOW and
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Z-Jay (Edmonton, AB)
10:08:34 11/18/05
That's what the VQ table is for....
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sorka
10:30:33 11/18/05
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