Author | Topic |
Location: Adelaide
Registered: May 2003
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Re: Is 5 valve better than 4 valve?
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Sat, 28 May 2005 00:26
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At those sort of cam durations you will need to disable the VVT-i, and also look into valve clearancing, since anything over 8.4mm lift on the 20v makes it an intereference engine.
The Formula Atlantic engines are actually built by Hasselgren rather than TRD. But from memory there were a couple of 20v engines a few years back, but they pretty much fell flat on their face.
From everything i have seen, the 20v head has worse squish areas than the 16v head. For the 4AGE that is, plus the valve angles arnt ideal by any stretch of the imagination.
With that Yamaha review remember that the 5valve heads they use were specifically designed for that purpose. Wheras the 20v 4AGEs seem to be a testing platform, basically a 20v head chucked on a 16v block with new pistons as Toyota seem fond of doing. Just look at the GZE for an example of that.
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| Subject | Poster | Date |
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Is 5 valve better than 4 valve?
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170bhp | Fri, 27 May 2005 12:54 |
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Re: Is 5 valve better than 4 valve?
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Big T | Fri, 27 May 2005 13:39 |
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Re: Is 5 valve better than 4 valve?
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oldcorollas | Fri, 27 May 2005 14:49 |
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Re: Is 5 valve better than 4 valve?
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takai | Fri, 27 May 2005 15:09 |
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Re: Is 5 valve better than 4 valve?
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Jonny2TG | Fri, 27 May 2005 15:34 |
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Re: Is 5 valve better than 4 valve?
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takai | Sat, 28 May 2005 00:26 |
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Re: Is 5 valve better than 4 valve?
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CLG | Sat, 28 May 2005 01:12 |
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Re: Is 5 valve better than 4 valve?
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Jonny2TG | Sat, 28 May 2005 01:42 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sat, 28 May 2005 05:16 |
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Re: Is 5 valve better than 4 valve?
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floody | Tue, 31 May 2005 13:06 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sat, 28 May 2005 05:33 |
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Re: Is 5 valve better than 4 valve?
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Henn | Sat, 28 May 2005 05:41 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sat, 28 May 2005 05:48 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sat, 28 May 2005 05:46 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sat, 28 May 2005 06:05 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sat, 28 May 2005 06:07 |
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Re: Is 5 valve better than 4 valve?
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Acoustic | Tue, 31 May 2005 16:03 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sat, 28 May 2005 06:10 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sat, 28 May 2005 06:15 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sat, 28 May 2005 06:14 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sat, 28 May 2005 06:17 |
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Re: Is 5 valve better than 4 valve?
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shinybluesteel | Sat, 28 May 2005 06:40 |
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Re: Is 5 valve better than 4 valve?
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JFAllen | Sat, 28 May 2005 07:28 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sat, 28 May 2005 06:39 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sat, 28 May 2005 06:43 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sat, 28 May 2005 06:43 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sat, 28 May 2005 06:45 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sat, 28 May 2005 06:48 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sat, 28 May 2005 06:58 |
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Re: Is 5 valve better than 4 valve?
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Jonny2TG | Sat, 28 May 2005 07:52 |
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Re: Is 5 valve better than 4 valve?
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takai | Sat, 28 May 2005 08:24 |
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Re: Is 5 valve better than 4 valve?
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bored | Sat, 28 May 2005 10:45 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sat, 28 May 2005 10:08 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sat, 28 May 2005 11:12 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sat, 28 May 2005 11:14 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sat, 28 May 2005 11:24 |
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Re: Is 5 valve better than 4 valve?
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takai | Sat, 28 May 2005 11:19 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sat, 28 May 2005 11:32 |
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Re: Is 5 valve better than 4 valve?
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bored | Sat, 28 May 2005 11:40 |
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Re: Is 5 valve better than 4 valve?
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takai | Sat, 28 May 2005 11:43 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sat, 28 May 2005 11:48 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sat, 28 May 2005 11:49 |
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Re: Is 5 valve better than 4 valve?
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takai | Sat, 28 May 2005 11:53 |
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Re: Is 5 valve better than 4 valve?
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IRA11Y | Mon, 06 June 2005 07:26 |
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Re: Is 5 valve better than 4 valve?
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ke382TG | Sat, 28 May 2005 11:50 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sat, 28 May 2005 11:59 |
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Re: Is 5 valve better than 4 valve?
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ke382TG | Sat, 28 May 2005 12:37 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sat, 28 May 2005 13:58 |
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Re: Is 5 valve better than 4 valve?
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boudan | Sat, 28 May 2005 15:22 |
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Re: Is 5 valve better than 4 valve?
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Acoustic | Tue, 31 May 2005 16:16 |
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Re: Is 5 valve better than 4 valve?
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*rivmasta* | Wed, 01 June 2005 00:38 |
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Re: Is 5 valve better than 4 valve?
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off-road | Sun, 05 June 2005 09:14 |
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Re: Is 5 valve better than 4 valve?
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off-road | Sun, 05 June 2005 09:31 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sun, 29 May 2005 01:29 |
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Re: Is 5 valve better than 4 valve?
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Ben Wilson | Tue, 31 May 2005 00:03 |
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Re: Is 5 valve better than 4 valve?
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Joshstix | Sun, 29 May 2005 02:26 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sun, 29 May 2005 08:14 |
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Re: Is 5 valve better than 4 valve?
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SEXY 16 | Sun, 29 May 2005 09:41 |
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Re: Is 5 valve better than 4 valve?
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river | Sun, 29 May 2005 11:53 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sun, 29 May 2005 12:00 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sun, 29 May 2005 12:08 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sun, 29 May 2005 12:11 |
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Re: Is 5 valve better than 4 valve?
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Mr Revhead | Sun, 29 May 2005 12:34 |
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Re: Is 5 valve better than 4 valve?
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oldcorollas | Sun, 29 May 2005 13:35 |
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Re: Is 5 valve better than 4 valve?
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ROLLA GTi | Sun, 29 May 2005 13:45 |
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Re: Is 5 valve better than 4 valve?
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Jonny2TG | Sun, 29 May 2005 14:15 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sun, 29 May 2005 14:58 |
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Re: Is 5 valve better than 4 valve?
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THE WITZL | Mon, 30 May 2005 02:34 |
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Re: Is 5 valve better than 4 valve?
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funkdoc | Mon, 30 May 2005 11:02 |
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Re: Is 5 valve better than 4 valve?
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4agte | Mon, 06 June 2005 08:18 |
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Re: Is 5 valve better than 4 valve?
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floody | Mon, 06 June 2005 09:57 |
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Re: Is 5 valve better than 4 valve?
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4agte | Mon, 06 June 2005 10:10 |
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Re: Is 5 valve better than 4 valve?
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floody | Tue, 07 June 2005 04:13 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Mon, 30 May 2005 09:14 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Mon, 30 May 2005 09:18 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Tue, 31 May 2005 10:36 |
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Re: Is 5 valve better than 4 valve?
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Jonny2TG | Mon, 30 May 2005 15:37 |
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Re: Is 5 valve better than 4 valve?
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Johnny | Mon, 30 May 2005 15:55 |
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Re: Is 5 valve better than 4 valve?
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justcallmefrank | Tue, 31 May 2005 02:07 |
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Re: Is 5 valve better than 4 valve?
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takai | Tue, 31 May 2005 00:26 |
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Re: Is 5 valve better than 4 valve?
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Ben Wilson | Tue, 31 May 2005 01:02 |
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Re: Is 5 valve better than 4 valve?
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takai | Tue, 31 May 2005 01:04 |
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Re: Is 5 valve better than 4 valve?
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THE WITZL | Tue, 31 May 2005 07:41 |
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Re: Is 5 valve better than 4 valve?
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Jonny2TG | Tue, 31 May 2005 08:23 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Tue, 31 May 2005 11:40 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Tue, 31 May 2005 11:56 |
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Re: Is 5 valve better than 4 valve?
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Merudo | Tue, 31 May 2005 11:57 |
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Re: Is 5 valve better than 4 valve?
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xolent | Tue, 31 May 2005 12:17 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Tue, 31 May 2005 12:25 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Tue, 31 May 2005 12:43 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Tue, 31 May 2005 12:34 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Tue, 31 May 2005 12:57 |
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Re: Is 5 valve better than 4 valve?
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takai | Tue, 31 May 2005 13:13 |
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Re: Is 5 valve better than 4 valve?
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funkdoc | Wed, 01 June 2005 12:41 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Wed, 01 June 2005 14:04 |
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Re: Is 5 valve better than 4 valve?
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emmac | Wed, 01 June 2005 14:45 |
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Re: Is 5 valve better than 4 valve?
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rx-3 ip | Sat, 04 June 2005 06:26 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sun, 05 June 2005 13:15 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sun, 05 June 2005 13:47 |
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Re: Is 5 valve better than 4 valve?
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Kr0n1k | Sun, 05 June 2005 17:34 |
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Re: Is 5 valve better than 4 valve?
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170bhp | Sun, 05 June 2005 22:28 |
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Re: Is 5 valve better than 4 valve?
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EMP-2TG | Sun, 05 June 2005 23:50 |
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Re: Is 5 valve better than 4 valve?
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off-road | Sun, 05 June 2005 23:34 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sun, 05 June 2005 23:40 |
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Re: Is 5 valve better than 4 valve?
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jkvsnn | Tue, 07 June 2005 03:19 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Tue, 07 June 2005 03:34 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Sun, 05 June 2005 23:44 |
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Re: Is 5 valve better than 4 valve?
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SEXY 16 | Mon, 06 June 2005 01:00 |
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Re: Is 5 valve better than 4 valve?
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oldcorollas | Mon, 06 June 2005 02:01 |
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Re: Is 5 valve better than 4 valve?
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off-road | Mon, 06 June 2005 02:40 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Mon, 06 June 2005 04:02 |
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Re: Is 5 valve better than 4 valve?
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oldcorollas | Mon, 06 June 2005 07:04 |
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Re: Is 5 valve better than 4 valve?
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*rivmasta* | Mon, 06 June 2005 07:29 |
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Re: Is 5 valve better than 4 valve?
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*rivmasta* | Mon, 06 June 2005 07:32 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Mon, 06 June 2005 08:14 |
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Re: Is 5 valve better than 4 valve?
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takai | Mon, 06 June 2005 09:06 |
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Re: Is 5 valve better than 4 valve?
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4agte | Mon, 06 June 2005 09:11 |
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Re: Is 5 valve better than 4 valve?
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takai | Mon, 06 June 2005 11:38 |
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Re: Is 5 valve better than 4 valve?
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Bobski | Mon, 06 June 2005 16:41 |
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Re: Is 5 valve better than 4 valve?
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Blown86 | Mon, 06 June 2005 23:30 |
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Re: Is 5 valve better than 4 valve?
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Corona RT142 | Mon, 06 June 2005 23:31 |
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Re: Is 5 valve better than 4 valve?
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adamaw11 | Tue, 07 June 2005 01:26 |
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Re: Is 5 valve better than 4 valve?
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Bill Sherwood | Tue, 07 June 2005 02:54 |
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Re: Is 5 valve better than 4 valve?
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shinybluesteel | Tue, 07 June 2005 03:03 |
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Re: Is 5 valve better than 4 valve?
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lumpy | Tue, 07 June 2005 05:52 |
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Re: Is 5 valve better than 4 valve?
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oldcorollas | Fri, 10 June 2005 01:50 |
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Re: Is 5 valve better than 4 valve?
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TheStitt | Wed, 08 June 2005 06:24 |
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Re: Is 5 valve better than 4 valve?
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510rob | Thu, 09 June 2005 19:48 |
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Re: Is 5 valve better than 4 valve?
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takai | Fri, 10 June 2005 04:23 |
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Re: Is 5 valve better than 4 valve?
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oldcorollas | Fri, 10 June 2005 04:57 |
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Re: Is 5 valve better than 4 valve?
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Mr Revhead | Fri, 10 June 2005 05:49 |
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Re: Is 5 valve better than 4 valve?
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oldcorollas | Fri, 10 June 2005 06:21 |
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Re: Is 5 valve better than 4 valve?
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Mr Revhead | Fri, 10 June 2005 07:02 |
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Re: Is 5 valve better than 4 valve?
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oldcorollas | Fri, 10 June 2005 07:24 |
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