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D
Re: Equally Sized Valves
#1
No life (a.k.a. DattoMaster)
Joined:
2002/10/28 6:49
From under the Firmament LOL no twiglight effect BS
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Posts: 10926
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There is no gain to have an exhaust 1mm smaller if thats what you mean?
The exhaust has 4 times more pressure behind it than the inlet charge
so best use a ratio of inlet vs exhaust valve size around 100/80.
eg.
40mm inlet x 0.8 = 32mm exhaust
40mm inlet / 32mm exhaust

Still a stock H89 head has perfect valves and ports from stock for turbo

Posted on: 2013/6/16 14:41
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Subject Poster Date
     Equally Sized Valves Liebonhardus 2013/6/15 9:07
       Re: Equally Sized Valves dattodude 2013/6/15 11:40
       Re: Equally Sized Valves dattodude 2013/6/15 11:44
         Re: Equally Sized Valves dattodude 2013/6/15 12:30
       Re: Equally Sized Valves lamb_daiquiri 2013/6/16 1:01
         Re: Equally Sized Valves mcdat 2013/6/16 1:13
           Re: Equally Sized Valves D 2013/6/16 4:15
             Re: Equally Sized Valves Liebonhardus 2013/6/16 13:15
             Re: Equally Sized Valves Liebonhardus 2013/6/16 13:29
               Re: Equally Sized Valves D 2013/6/16 14:41
                 Re: Equally Sized Valves Liebonhardus 2013/6/16 19:39
                   Re: Equally Sized Valves D 2013/6/17 1:42
       Re: Equally Sized Valves D 2013/6/17 1:56
         Re: Equally Sized Valves ssskiwi 2013/6/17 7:29
       Re: Equally Sized Valves he1278 2013/6/17 11:08
         Re: Equally Sized Valves ssskiwi 2013/6/17 11:33
       Re: Equally Sized Valves levey 2013/6/17 12:25
         Re: Equally Sized Valves D 2013/6/18 2:30
       Re: Equally Sized Valves CA_1200_project 2013/6/18 4:14
         Re: Equally Sized Valves Liebonhardus 2013/6/18 8:21
           Re: Equally Sized Valves D 2013/6/18 14:18
       Re: Equally Sized Valves nismo1 2013/6/18 18:20
         Re: Equally Sized Valves Liebonhardus 2013/6/19 9:38
           Re: Equally Sized Valves D 2013/6/19 16:06




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