WHINE envy? Video with Audio! - Page 6 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Forced Induction All questions and problems regarding Superchargers, Turbos, NOS, ZEX, intercoolers, water injection, etc.

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Old 09-08-2003, 02:59 AM   #51
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Hearing those clips made me smile! Sounds like my 01 ssei, love the whine. My father has the same radar dectector, same sounds, I've got an Escort cordless and it'* pretty good. I like your front and rear setup. Good videos. I need to figure out how to make one someday. guess I got to get a camera first.

Boost- mine with thrasher cai and 3.4 won't make the gauge jump that fast, but defently peggs +10 psi with highway WOT quite quickly. Won't a prted blower help make it spool up even faster? And the GTPs boost gauge is a joke, I test drove an 02GTP and the light bars were just to funney, so pointless, they all let up evertime you hit the gas, only 6 psi, what is GM thinking sometimes. I also laughed at the design of the stock airbox. My Aurora box was also a joke. Oh, lets jost throw a whole bunch of pointless plastic in and make the air change direction a couple of times and that ought to quite things down. I like to hear my intake, first time I heard WHINE in my car, I almost messed my self, now I need to hear it everyday!
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Old 09-09-2003, 10:20 PM   #52
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Quote:
And the GTPs boost gauge is a joke, I test drove an 02GTP and the light bars were just to funney, so pointless, they all let up evertime you hit the gas, only 6 psi, what is GM thinking sometimes.
The GTP gauge is the crappiest boost gauge I have ever seen in my life. It is 12 squares in a 1/4 circle on the DIC. Each bar is .5psi boost, meaning it only goes to 6psi, and the gauge is not labled so if you didn't know from outside sources how much boost each box was, it would be completely useless. With the 2.7" Pulley my dad runs on his GTP on the street accelerating normal from a corner will get you most of the "gauge" filled up. Going up a slight grade on the freeway with the cruise on will get you 1-3 bars depending on the grade and how long you are on it. About 1/3 throttle will peg the gauge, and with the 14.3psi the M90 puts out on the street it makes the gauge useless at WOT, and it is the same situation but worse with the 2.6" Pulley at the track, because the car makes 14.96psi on that pulley. We have to use the autotap as a boost gauge and that isn't much fun because you can't see it while you are driving, you have to calculate later. GM=Dumb. People with SSEi'* are lucky...at least they have 10psi gauges! But, there is no need for more than a 10psi gauge seeing that the cars only make 6-7psi stock, and most are stock for their whole life.
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Old 09-09-2003, 10:41 PM   #53
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Things aren't all rosey in the Series 1 camp, either. Our SC'* put out 8-9 psi stock, which puts us very near top indication on the gauge. Jeffrey10x2 and I are well over the limit on the gauge with our intakes and pulleys, and DrJay should be soon. At least with the analog needle gauge, and proper labelling, you can guess pretty close where you are.
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Old 09-11-2003, 12:33 AM   #54
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<<<
Series 1 Engines have the M62 supercharger:

At 14000rpm and 5psi of boost it flows 460cfm. But at 10psi it flows 440cfm. Picture what the people running 13-16psi are getting in terms of actual flow.
The temperature is also night and day between 5 and 10psi. At 5psi (14000 rpm) the delta temp is 115deg F. Move that up to 10psi and we get 180deg F.
Now lets look at the parasitic losses associated with this supercharger. At 10psi and 14000rpm we lose 36hp trying to spin it. Wow I hope the gains are more than 40hp! At 5psi we only lose 24hp. They really should come up with better lubricants for these things!

Series 2 engines have the M90:

Now looking at the M90'* flow rate we see 540cfm at 5psi and 520cfm at 10psi. It still gets the same level of loss as boost goes up as did the M62. The temp at 5psi is 120deg F and 190deg F at 10psi. Interesting it runs hotter huh? So all that flow creates more friction and hence more heat, our enemy. I wonder how much power it takes to spin this joker. Well at 5psi we have a parasitic loss of about 29hp but move that up to 10psi and we lose an astounding 44hp!
<<<
.....so what'* the point of increasing boost pressure if you are effectively decreasing flow, and increasing temp and hp losses ??
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Old 09-11-2003, 12:42 AM   #55
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Quite simple, really. I hope.

Do we know where that data came from? A car? A bench? Real world situations can be quite different. Where it pulls the air from, how much it can grab, which thermostat you're running, how well you control the temps of your SC. All these are factors, not to mention any exhaust mods.

Heat is the enemy, ultimately, and we're all doing what we can to control it. I'll bet you if my car were still unmodified, and I put that 2.2" pulley on, I'd lose power on the top end, but I think with what I've done to the car, I'm scavenging quite well.

The REAL advantage to the smaller pulley is the snappier throttle response, and quicker SC reaction.
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Old 09-11-2003, 10:56 PM   #56
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Quote:
The REAL advantage to the smaller pulley is the snappier throttle response, and quicker SC reaction.
You forgot the best part...the whine!!!
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Old 09-11-2003, 11:08 PM   #57
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Quote:
Originally Posted by dbtk2
Quote:
The REAL advantage to the smaller pulley is the snappier throttle response, and quicker SC reaction.
You forgot the best part...the whine!!!
Ok, the snappy throttle response, quicker boost reaction, cool whiney sound AND the look on people'* faces when they see a 2.2" pulley on that nosedrive......assuming they know what they're looking at
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Old 09-11-2003, 11:10 PM   #58
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If they are edjumacated it'd look something like this...



Well atleast at BonnieFest!
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Old 10-08-2003, 09:51 PM   #59
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is that with the new kn
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Old 10-08-2003, 09:54 PM   #60
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That'* with the older cone. I haven't done audio since the new RX K&N, but the sound shouldn't be much different.
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