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oldcorollas
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Re: SUPERCHARGERS VS TURBOS

Fri, 11 March 2005 00:05

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Henn wrote on Thu, 10 March 2005 23:12

I daily drive a 4AGZE. The torque is great, you can put your foot down at any revs and you take off fast. Boost does increase slightly throughout the rev range, from about 6-7psi at full throttle and 2000rpm to 10-11 psi by redline. Not sure why.

a couple of things. by redline the Volumetric Efficiency of the motor is decreasing (and so will torque, since not as much air is getting in), but also the eficiency of the SC id decreasing. at higher rpm, the SC heats up the air more, but it still pretty much pumps the same amount of air per rev.

now, the boost you see is ONLY a measure of the air NOT getting into the motor!! Wink

Wink

ie just because you have 20 psi doesn't mean you are getting 20psi into the cylinders Razz

Razz

so here, at higher rpm, the motor is not letting as much air in per rev, and the extra air that is not let in is also hotter, so it expands a little (well tries to) so you end up with a higher manifold pressure..

well, thats the way i see it anyway.
Cya, Stewart

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Read Message SUPERCHARGERS VS TURBOS supa_rolla Thu, 10 March 2005 04:49
Re: SUPERCHARGERS VS TURBOS TurboRA28 Thu, 10 March 2005 04:53
Re: SUPERCHARGERS VS TURBOS tim123c Thu, 10 March 2005 05:07
Re: SUPERCHARGERS VS TURBOS Kyosho Thu, 10 March 2005 05:21
Re: SUPERCHARGERS VS TURBOS oldcorollas Thu, 10 March 2005 07:08
Read Message Re: SUPERCHARGERS VS TURBOS Kyosho Thu, 10 March 2005 07:44
Re: SUPERCHARGERS VS TURBOS boxh34d Thu, 10 March 2005 07:53
Re: SUPERCHARGERS VS TURBOS oldcorollas Thu, 10 March 2005 07:57
Re: SUPERCHARGERS VS TURBOS IRA11Y Thu, 10 March 2005 08:30
Re: SUPERCHARGERS VS TURBOS oldcorollas Thu, 10 March 2005 07:55
Read Message Re: SUPERCHARGERS VS TURBOS river Thu, 10 March 2005 05:24
Re: SUPERCHARGERS VS TURBOS 4agte Thu, 10 March 2005 06:49
Re: SUPERCHARGERS VS TURBOS Henn Thu, 10 March 2005 12:12
Re: SUPERCHARGERS VS TURBOS oldcorollas Fri, 11 March 2005 00:05
Re: SUPERCHARGERS VS TURBOS supa_rolla Thu, 10 March 2005 23:45
Read Message Re: SUPERCHARGERS VS TURBOS THE WITZL Fri, 11 March 2005 00:34
Re: SUPERCHARGERS VS TURBOS Ben Wilson Fri, 11 March 2005 01:53
Re: SUPERCHARGERS VS TURBOS M.W.P. Fri, 11 March 2005 08:40
Re: SUPERCHARGERS VS TURBOS mick Fri, 11 March 2005 09:59
Re: SUPERCHARGERS VS TURBOS river Fri, 11 March 2005 10:10
Read Message Re: SUPERCHARGERS VS TURBOS Corona RT142 Fri, 11 March 2005 11:04
Re: SUPERCHARGERS VS TURBOS towe_001 Fri, 11 March 2005 12:11
Re: SUPERCHARGERS VS TURBOS boxh34d Fri, 11 March 2005 13:28
Re: SUPERCHARGERS VS TURBOS towe_001 Fri, 11 March 2005 14:04
Re: SUPERCHARGERS VS TURBOS joorsh Fri, 11 March 2005 14:34
Read Message Re: SUPERCHARGERS VS TURBOS joeninety Fri, 11 March 2005 22:09
Re: SUPERCHARGERS VS TURBOS M.W.P. Sat, 12 March 2005 03:37
Re: SUPERCHARGERS VS TURBOS fatmr2 Sat, 12 March 2005 01:30
Re: SUPERCHARGERS VS TURBOS Joshstix Sat, 12 March 2005 03:56
Re: SUPERCHARGERS VS TURBOS Norbie Sat, 12 March 2005 07:13
Read Message Re: SUPERCHARGERS VS TURBOS towe_001 Sat, 12 March 2005 09:18
Re: SUPERCHARGERS VS TURBOS IRA11Y Sat, 12 March 2005 09:32
Re: SUPERCHARGERS VS TURBOS THE WITZL Sat, 12 March 2005 09:13
Re: SUPERCHARGERS VS TURBOS Norbie Sat, 12 March 2005 09:45
Re: SUPERCHARGERS VS TURBOS IRA11Y Sat, 12 March 2005 10:04
Read Message Re: SUPERCHARGERS VS TURBOS brett_celicacoupe Sat, 12 March 2005 10:03
Re: SUPERCHARGERS VS TURBOS thu187 Sat, 12 March 2005 16:26
Re: SUPERCHARGERS VS TURBOS IRA11Y Sat, 12 March 2005 18:23
Re: SUPERCHARGERS VS TURBOS Kyosho Sun, 13 March 2005 07:43
Re: SUPERCHARGERS VS TURBOS YelloRolla Tue, 15 March 2005 13:29
Read Message Re: SUPERCHARGERS VS TURBOS JustenGT4 Wed, 16 March 2005 02:24
Re: SUPERCHARGERS VS TURBOS Chris Davey Sun, 13 March 2005 01:51
Re: SUPERCHARGERS VS TURBOS pro_ke Sun, 13 March 2005 02:20
Re: SUPERCHARGERS VS TURBOS Mookie Wed, 16 March 2005 23:13
Re: SUPERCHARGERS VS TURBOS THE WITZL Sun, 13 March 2005 08:28
Read Message Re: SUPERCHARGERS VS TURBOS thu187 Sun, 13 March 2005 14:11
Re: SUPERCHARGERS VS TURBOS TRD-ST162 Sun, 13 March 2005 23:14
Re: SUPERCHARGERS VS TURBOS...more things to consider!!! supa_rolla Sun, 13 March 2005 23:47
Re: SUPERCHARGERS VS TURBOS supa_rolla Mon, 14 March 2005 10:40
Read Message Re: SUPERCHARGERS VS TURBOS YelloRolla Wed, 16 March 2005 02:32
Re: SUPERCHARGERS VS TURBOS jamem Wed, 16 March 2005 02:45
Re: SUPERCHARGERS VS TURBOS Corona RT142 Wed, 16 March 2005 02:46
Re: SUPERCHARGERS VS TURBOS jamem Wed, 16 March 2005 10:28
Re: SUPERCHARGERS VS TURBOS GUN METAL 87 SC Wed, 16 March 2005 07:10
Read Message Re: SUPERCHARGERS VS TURBOS takai Wed, 16 March 2005 07:41
Re: SUPERCHARGERS VS TURBOS Joshstix Thu, 17 March 2005 06:59
Re: SUPERCHARGERS VS TURBOS Norbie Thu, 17 March 2005 09:59
Re: SUPERCHARGERS VS TURBOS IRA11Y Thu, 17 March 2005 10:03
Re: SUPERCHARGERS VS TURBOS takai Thu, 17 March 2005 10:06

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