polishing intake runners worthwhile? & bosch high psi/high vol. pump info

[justin ivan]

If the injectors are spraying on the back of the valve then I would say go 
ahead and polish the runners to the best of your ability. It certainly won't 
hurt and could realize a couple of HP. At least you could have a peace of 
mind knowing that you did all you could in that area, and as you said it 
should only take a handful of hours.
Justin
>From: Ross Corrigan <280zx at home.com>
>Reply-To: diy_efi at diy-efi.org
>To: diy_efi at diy-efi.org
>Subject: Re: polishing intake runners worthwhile? & bosch high psi/high  
>vol. pump info
>Date: Fri, 11 May 2001 09:47:30 -0700
>
>At 01:15 AM 5/11/01 , you wrote:
>>As far as i knew, the intake manifolds are designed to be slightly rough 
>>for
>>a purpose(jsut like if you look at and good head work, the combustion
>>chambers look like a mirror , but the intake runners and ports are 
>>slightly
>>rough)
>>this is so that when your air and fuel enter the runner, this slight 
>>texture
>>creates turbulence which keeps the gas molecules suspended better in the
>>air... gives a more even distribution(or would it be disbursement), and a
>>better mix(for lack of a better term).. which gets more essential the 
>>FURTHER
>>the injectors are placed from the head , in the manifold.
>>
>>hope this helps...
>>
>>Tony Blatnica
>
>Thanks Tony, I follow and agree with all you state. These injectors are
>practically at the end of the runner and shooting fuel at the intake
>valve...I'd polish most of the length of the runner leaving some near it's
>exit to the head etc was my thinking.
>
>
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