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Location:
Melbourne
Registered:
July 2002
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Re: 1JZ stock BOV.. normal sound?
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Tue, 02 December 2003 00:08
 
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You guys talking about intercooler shockwave?
Correct me if i'm wrong but that 'autobot transformer' noise is actually not from the blow off valve, but from the turbos (is heard through the air filter). When you boost, and shift, the thottle plate is closed but the turbo is still producing boost (cause its still spinning), the compressed air runs to the throttle plate and cause its closed, has to go back down the pipe work to the turbo. It hits the turbo blades in 'shockwaves' slowing the turbine down. The bi-product is the transformer noise which is heard out of the air filter.
Now, to get around this we install a BOV .. But, a BOV only operates under vaccuum. So when the thottle is still slightly open, the BOV stays shut, and we get this 'shockwave' effect happening onto the turbines.
This sound about right to everyone?
Cheers
Gaz
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| | Subject | Poster | Date |
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1JZ stock BOV.. normal sound?
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HedgehogSandwich | Sun, 30 November 2003 19:33 |
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Re: 1JZ stock BOV.. normal sound?
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speakafreaka | Mon, 01 December 2003 01:33 |
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Re: 1JZ stock BOV.. normal sound?
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HedgehogSandwich | Mon, 01 December 2003 12:04 |
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Re: 1JZ stock BOV.. normal sound?
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Celia-Sue | Mon, 01 December 2003 02:27 |
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Re: 1JZ stock BOV.. normal sound?
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pimp1j | Mon, 01 December 2003 06:40 |
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Re: 1JZ stock BOV.. normal sound?
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2Lsupra | Mon, 01 December 2003 08:36 |
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Re: 1JZ stock BOV.. normal sound?
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Shraka | Mon, 01 December 2003 12:07 |
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Re: 1JZ stock BOV.. normal sound?
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jackel | Mon, 01 December 2003 14:23 |
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Re: 1JZ stock BOV.. normal sound?
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mrsoopra | Tue, 02 December 2003 00:08 |
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Re: 1JZ stock BOV.. normal sound?
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HedgehogSandwich | Tue, 02 December 2003 11:59 |
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Re: 1JZ stock BOV.. normal sound?
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E30-323ti | Tue, 02 December 2003 21:09 |
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Re: 1JZ stock BOV.. normal sound?
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Danish | Tue, 02 December 2003 23:18 |
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Re: 1JZ stock BOV.. normal sound?
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HedgehogSandwich | Wed, 03 December 2003 00:35 |
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Re: 1JZ stock BOV.. normal sound?
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mrsoopra | Wed, 03 December 2003 01:12 |
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Re: 1JZ stock BOV.. normal sound?
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HedgehogSandwich | Wed, 03 December 2003 01:21 |
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Re: 1JZ stock BOV.. normal sound?
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Norbie | Wed, 03 December 2003 01:37 |
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Re: 1JZ stock BOV.. normal sound?
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HedgehogSandwich | Wed, 03 December 2003 11:54 |
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Re: 1JZ stock BOV.. normal sound?
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mrsoopra | Wed, 03 December 2003 01:38 |
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Re: 1JZ stock BOV.. normal sound?
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E30-323ti | Wed, 03 December 2003 03:28 |
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Re: 1JZ stock BOV.. normal sound?
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mrsoopra | Wed, 03 December 2003 03:37 |
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Re: 1JZ stock BOV.. normal sound?
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Norbie | Wed, 03 December 2003 03:43 |
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Re: 1JZ stock BOV.. normal sound?
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viagra_cressida | Thu, 04 December 2003 10:38 |
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Re: 1JZ stock BOV.. normal sound?
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speakafreaka | Thu, 04 December 2003 13:18 |
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Re: 1JZ stock BOV.. normal sound?
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JZA70_R | Thu, 04 December 2003 12:36 |
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Re: 1JZ stock BOV.. normal sound?
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pimp1j | Thu, 04 December 2003 15:44 |
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Re: 1JZ stock BOV.. normal sound?
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Soarer | Thu, 04 December 2003 23:42 |
