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fade-e Forums Junkie Location: Sydney Registered: June 2004	Re: BOV with horn Fri, 02 July 2004 15:39 I can understand thug_immortals point of view but i would recon that drag/race cars dont use BOVs cause the motor and turbo gets rebuilt after the race anyway, also the speed in gear changes is split seconds in racing and therfore i hardly think there would be time for back pressure. in regards to back pressure i would believe that it would cause some issues (maybe not major ones) cause if you take into consideration reflection and refraction then i would assume this:- pressure from turbo going to plenum is X PSI, when throttle closed then that pressure would hit closed throttle and therefore reflect/refract back at same X PSI. now although there is still pressure going towards plenum even during closed throttle/gear change all that will do is slow down the rate of back pressure, but because the back pressure theoretically would be higher than the pressure that the turbo would be extracting to plenum (& possibly reducing as turbo spin slowing down) during the change it is possible that it could reach the turbo before gear change and boost/pressure increase can occur and therefore damage may happen. the damage would not be to turbo but rather seals. think of it like this if you can; car in first gear, car rolling back and you rev dump first. yes very nice smoke show but not good for diff... same concept with turbo and therefore BOV would relieve that back pressure to prevent seals getting F!@#$D also hence quick shift no BOV required (turbo reaches boost before back pressure has time to make it back to turbo) but like thug_immortal thats my opinion......... [Report message to a moderator]

	Subject	Poster	Date
	BOV with horn	fade-e	Wed, 30 June 2004 12:03
	Re: BOV with horn	4ageeza	Wed, 30 June 2004 12:24
	Re: BOV with horn	4ageeza	Thu, 01 July 2004 12:08
	Re: BOV with horn	thug_immortal	Thu, 01 July 2004 12:19
	Re: BOV with horn	Skip	Thu, 01 July 2004 23:46
	Re: BOV with horn	thug_immortal	Fri, 02 July 2004 00:40
	Re: BOV with horn	ed_ma61	Fri, 02 July 2004 01:31
	Re: BOV with horn	Evil_Foetus	Wed, 30 June 2004 12:35
	Re: BOV with horn	jackel	Wed, 30 June 2004 13:49
	Re: BOV with horn	Simon-AE86	Wed, 30 June 2004 13:52
	Re: BOV with horn	fade-e	Wed, 30 June 2004 14:30
	Re: BOV with horn	ae95	Wed, 30 June 2004 14:48
	Re: BOV with horn	Draza	Wed, 30 June 2004 15:01
	Re: BOV with horn	bathurst-91	Thu, 01 July 2004 11:33
	Re: BOV with horn	thug_immortal	Thu, 01 July 2004 11:44
	Re: BOV with horn	Shraka	Wed, 30 June 2004 15:42
	Re: BOV with horn	Norbie	Wed, 30 June 2004 23:16
	Re: BOV with horn	Jag7799	Thu, 01 July 2004 00:02
	Re: BOV with horn	Chris Davey	Thu, 01 July 2004 00:55
	Re: BOV with horn	Jag7799	Thu, 01 July 2004 01:04
	Re: BOV with horn	Skip	Thu, 01 July 2004 01:45
	Re: BOV with horn	Chris Davey	Thu, 01 July 2004 01:56
	Re: BOV with horn	Norbie	Thu, 01 July 2004 03:33
	Re: BOV with horn	Chris Davey	Thu, 01 July 2004 05:26
	Re: BOV with horn	rvrolla	Thu, 01 July 2004 05:41
	Re: BOV with horn	Evil_Foetus	Thu, 01 July 2004 05:49
	Re: BOV with horn	AE86slut	Thu, 01 July 2004 05:57
	Re: BOV with horn	ae95	Thu, 01 July 2004 11:53
	Re: BOV with horn	thug_immortal	Thu, 01 July 2004 11:57
	Re: BOV with horn	thug_immortal	Thu, 01 July 2004 12:08
	Re: BOV with horn	Jag7799	Thu, 01 July 2004 11:57
	Re: BOV with horn	Jag7799	Thu, 01 July 2004 12:24
	Re: BOV with horn	ae95	Thu, 01 July 2004 14:52
	Re: BOV with horn	ed_ma61	Thu, 01 July 2004 16:02
	Re: BOV with horn	Ribbo	Thu, 01 July 2004 21:51
	Re: BOV with horn	MR. 2	Fri, 02 July 2004 00:52
	Re: BOV with horn	Chris Davey	Fri, 02 July 2004 03:09
	Re: BOV with horn	Norbie	Fri, 02 July 2004 04:14
	Re: BOV with horn	Skip	Fri, 02 July 2004 04:50
	Re: BOV with horn	fade-e	Fri, 02 July 2004 15:39
	Re: BOV with horn	ae95	Fri, 02 July 2004 15:45
	Re: BOV with horn	fade-e	Sat, 03 July 2004 02:55
	Re: BOV with horn	Norbie	Sat, 03 July 2004 13:49
	Re: BOV with horn	lang	Sat, 03 July 2004 14:15
	Re: BOV with horn	fade-e	Sun, 04 July 2004 05:05
	Re: BOV with horn	boris	Sun, 04 July 2004 06:01
	Re: BOV with horn	fade-e	Sun, 04 July 2004 06:11
	Re: BOV with horn	boris	Sun, 04 July 2004 06:13
	Re: BOV with horn	fade-e	Sun, 04 July 2004 06:23
	Re: BOV with horn	fade-e	Sun, 04 July 2004 06:51
	Re: BOV with horn	ae95	Sun, 04 July 2004 08:11
	Re: BOV with horn	M.J.H	Sun, 04 July 2004 09:27
	Re: BOV with horn	ae95	Sun, 04 July 2004 10:26
	Re: BOV with horn	fade-e	Sun, 04 July 2004 10:09

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