Re: 16v vs. 8v

["Ramon R. Delgado" <titod@worldnet.att.net>]

Can you really do that swap?

----------
> From: Brandon Rife <brandon@redrose.net>
> To: scirocco-l@privateI.com
> Subject: Re: 16v vs. 8v
> Date: Friday, November 08, 1996 8:52 PM
> 
> Or you could just drop a VR6 into blow the 8v or 16v away, which ever the
> case my be. 
> 
> ----------
> | From: Brandon Sommerville <brandon@caseware.com>
> | To: scirocco-l@privateI.com
> | Subject: Re: 16v vs. 8v
> | Date: Friday, November 08, 1996 6:59 PM
> | 
> | >No, your way off. The valves are not effected. The valves open and
close
> the
> | >same as before. Both intake valves will open and close. This function
is
> not
> | >effected by the 4 butterfly valves were gonna add.  (One per
cylinder.)
> | >
> | >This will be MY last attempt to explain this system. Its quite simple,
> | >really. I think your knowlege of 16V mechanics is lacking and this is
> why
> | >your having difficulty in understanding. Dont take that as a personal
> slam,
> | >I want you to understand whats going on or I wouldnt have explained it
> in 4
> | >different ways already. 
> | 
> | Hey, don't worry.  As I said before I am mechanically challenged!  :)
> | 
> | Im just running out of descriptions is all. 
> | >8V engines have 4 intake and 4 exhaust valves. This is a 4 cylinder
> engine
> | >with each cylinder getting 2 valves per cylinder. of these 2 valves, 1
> valve
> | >is for the intake and the other is the exhaust.
> | >
> | >16V engines have 8 intake valves and 8 exhaust valves. This is a 4
> cylinder
> | >engine with each cylinder getting 4 valves per cylinder. of these 4
> valves,
> | >2 are intake and 2 are exhaust. 
> | 
> | That part I knew and understood.
> | 
> | >The problem:
> | >16V engines have poor low end performance. They dont flow air well
> enough on
> | >low rpm's due to the design of having 2 intake valves per cylinder.
They
> do
> | >flow alot better on higher rpm's due to the 2 valves. Its performance
> | >advantage is on the high rpms. Its lacking performance disadvantage is
> on
> | >low rpms. 
> | >
> | >The solution: (We think)
> | >Change the low rpm airflow to each cylinder.
> | >
> | >How we do this is by adding to the intake manifold a set of butterfly
> valves
> | >(Like what you see inside a carbuertor or throttle body. It opens and
> closes
> | >ect.) We place one butterfly valve on one cylinder. its job is to
close
> off
> | >the airflow to one of the 2 valves. The other valve will not be
effected
> by
> | >it and will flow air as it has before. As rpm's increase, the valves
> will
> | >slowly open with the increase of engine rpm's until it's fully open
and
> the
> | >full benefit of having a 16v are used.
> | 
> | But isn't this reducing airflow at lower rpms?  Or is that how the
power
> is
> | gained?  My assumption was that the 2 intake valves on the 16v were
each
> a
> | little smaller than the 8v valve.  Is that where my mistake is?
> | 
> | >So essentially, you will have an 8V engine intake system for low RPM's
> to
> | >have the low end torque. Then once yuove gotten the engine up to where
> the
> | >16V motor's advantage comes into play, you have it. It would be th
best
> of
> | >both 8V & 16V worlds.
> | >I hope that got it.
> | >
> | >
> | >>If this isn't it I'm gonna quietly shake my head, go out back and
shoot
> | >>myself.  ;)
> | >
> | >
> | >Hopefully I saved a life today! 
> | 
> | I'm barely holding on.  But I won't get your answer till Monday.  :(
> | 
> | >Is anybody else having problems understanding? Or am I just an idiot? 
> | >DONT ANSWER THAT!!  :)-
> | >
> | >
> | >Shawn
> | >
> | 
> | Brandon Sommerville
> | 
> | "And then I says, tell me I'm wrong! And she says, I can't baby, 'cause
> | you're not!" 
> |  - The Evil Midnight Bomber What Bombs at Midnight
> | 
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