Intake manifolds

[roccit_53 at scirocco.cs.uoguelph.ca (C Boyko)]

Well, dispite the fact that I'm working really hard to upgrade the vastness
of the butt dyno this holiday season, you know I don't trust it at all.
Even quarter mile times can be deceptive, they vary quite a bit. Dynojet's
not perfect, but it's better than my butt, so that's what I go by.
Cathy
dynoed 97.7 whp with the Fox manifold
66.6 with the stock one, all things being (not very) equal 
There really IS no replacement... :)

On 9:15 am 12/26/06 "Dan Bubb" <jdbubb@verizon.net> wrote:
> Plus there's the extra added bonus that the old butt dyno is
> notoriously unreliable mostly cause it doesn't sense acceleration, it
> senses change in acceleration. So, an engine with a flat smooth
> torque curve will feel slow and an engine that dramatically "comes on
> the cam" will feel really fast once it hits the increase in the torque
> curve. Another thing is engine power vs. driver input. An example
> here is the bigger throttle body, or in particular a Weber single plate
> throttle body, vs. the stock TB. Because those TB's allow more air flow
> for a given pedal movement, they feel faster since the engine has a
> greater response for given operator input. In reality they only supply
> an HP or two even on an extensively modified engine. Dan
>
> From: "C Boyko" <roccit_53@scirocco.cs.uoguelph.ca>
> Sent: Tuesday, December 26, 2006 9:03 AM
> Subject: Re: Intake manifolds
>
>
> >  Well, that is sure interesting, and anther downside of the Fox
> >  manifold is that it needs a bit of firewall clearancing to fit
> >  into a MkI. And I often wonder if the performance improvements are
> >  real or perceived for some mods, maybe I'm not typical, but mine
> >  never seem to happen in isolation, my car was sure faster when
> >  that Fox manifold went on, but the car also got a cam, more
> >  displacement, different gearing and so on at the same time.
> >  Interesting stuff! Cathy
> >
> >  On 7:34 am 12/26/06 "Dan Bubb" <jdbubb@verizon.net> wrote:
> >>  Ran across an interesting thread.
> >>  http://rotorcharged.com/phpBB2/viewtopic.php?t=30
> >>
> >>  with some data from this site:
> >>
> >>  http://scientificrabbit.com/index.php?option=com_content&task=view
> &id=
> >>  13&Itemid=1
> >>
> >>  Apparently, the Fox manifold doesn't flow as well as a stock A1
> >>  manifold!
> >>
> >>  Course it looks like none of the 8V manifolds flow very well.
> >>
> >>  Another area for improvement for our poor disadvantaged 8V's.
> >>  Dan
> >>
> >>
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