TwinTurbo.NET: Nissan 300ZX forum - boost is actually a measure of restriction. (n/m)
Subject
boost is actually a measure of restriction. (n/m)
Posted by
Antonio(AZ->NYC)
on September 14, 2009 at 9:38 AM
This message has been viewed
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In Reply To
Boost = pressure
posted by BobbyT
on September 14, 2009 at 03:48 AM
Message
Follow Ups
How do turbos degrade and fail?
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Zarcasm(Hfd, CT)
22:09:45 09/13/09
read inside
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jdubs
22:25:50 09/13/09
Helpful but everything here assumes like-new performance
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Zarcasm(Hfd, CT)
09:05:36 09/14/09
Re
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pacmanpth
22:48:20 09/13/09
Don't the intercoolers relieve the temperature concerns?
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Zarcasm(Hfd, CT)
08:56:15 09/14/09
No, intercoolers have nothing to do with going beyond
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boost420
11:50:23 09/14/09
Re
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pacmanpth
11:57:18 09/14/09
So installing a BIGGER intercooler will alleviate intake tmp
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Zarcasm(Hfd, CT)
14:55:44 09/14/09
how do you sound so intelligent yet know how 2 destroy cars? (n/m)
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SuparexTT
15:55:13 09/14/09
Boost = pressure
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BobbyT
03:48:45 09/14/09
Engine benefits from both airflow AND pressure.
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Zarcasm(Hfd, CT)
08:49:37 09/14/09
"Airflow" implies the rate of mass flow
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pacmanpth
11:59:40 09/14/09
If my math is correct...
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Adam (NoVA)
13:08:16 09/14/09
You are referring to compression ratio, not compression.
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zellamay
13:41:49 09/14/09
Correction: "It's just NOT as simple ... (n/m)
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zellamay
14:09:34 09/14/09
yes, i was attempting to illustrate that its more
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Adam (NoVA)
14:48:47 09/14/09
Thanks for the reference - makes good sense. (n/m)
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Zarcasm(Hfd, CT)
15:08:21 09/14/09
The engine will not "benefit from the increased pressure"
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zellamay
13:21:13 09/14/09
Read ^ this post ^ Zarcasm
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BobbyT
13:58:19 09/14/09
It's NOT just about the number of molecules!
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Zarcasm(Hfd, CT)
15:24:54 09/14/09
I was under the impression that the fact that the molecules
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Z_Cherub
15:51:31 09/14/09
You are exactly right. At the same (boost) pressure,
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zellamay
16:35:46 09/14/09
Molecules probably have the advantage, BUT...
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Zarcasm(Hfd, CT)
22:02:51 09/14/09
There are a couple of issues here. I don't understand your
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zellamay
23:17:00 09/14/09
Molecules probably win / MechE = Mechanical Engineer
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Zarcasm(Hfd, CT)
08:16:54 09/15/09
Molecule # doesn't "win"; it's THE limiting factor
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BobbyT
05:05:42 09/16/09
Well said.
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Z_Cherub
15:20:30 09/17/09
boost is actually a measure of restriction. (n/m) -
Antonio(AZ->NYC)
09:38:31 09/14/09
What do you mean?
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Zarcasm(Hfd, CT)
21:34:42 09/14/09
restriction imposed by the engine itself
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aliaZ
06:13:21 09/15/09
In other words, your turbo smacks a bunch of air molecules
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BobbyT
05:11:02 09/16/09
not really
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aliaZ
09:04:57 09/16/09
The point was that you're putting things in a close volume
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BobbyT
17:18:00 09/16/09
an engine is not a closed volume
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aliaZ
17:31:53 09/16/09
Zarcasm is insistent that secondary characteristics matter
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BobbyT
05:18:08 09/17/09
Can a used turbo be refurbished to close to new performance?
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Zarcasm(Hfd, CT)
08:48:07 09/14/09
A used one can even be improved (SP500 etc), depends on
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Bernie (NoVA)
11:10:32 09/14/09
Well depends on what? What typically gets damaged?
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Zarcasm(Hfd, CT)
15:32:50 09/14/09
Depends on what is damaged, if the housing is cracked or
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Bernie (NoVA)
16:07:01 09/14/09
yes, but why? Newer technologies (better/stronger spool)
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boost420
13:20:22 09/14/09
Can you give me some new vs refurb turbo comparisons?
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Zarcasm(Hfd, CT)
15:35:56 09/14/09
Are you asking for compressor maps or just
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boost420
15:43:37 09/14/09
If you're mechanically inclined, using "off the shelf"
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boost420
17:02:48 09/14/09
Off the top of my head: you can do a cheap rebuild of
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zellamay
16:44:32 09/14/09
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