Re: 16v throttle body porting

["Ryan Schuermann" <rts@nol.net>]

well looking into the t-body with adapter plate attached, it is 
beveled to split the air somewhat,much what the Corrado t-body is 
missing and is the mod thatI do to corrado t-bodys along with porting 
out the attachment piece. On the scirocco you might get away with 
making sure the two pieces are flush all around, as i believe there 
is a small lip felt,  and blending in the two pieces in the middle of 
the venturis, especially that thin flat piece, pointing it and taking 
it down a cm in the middle, beveling the adapter 'nipples' pointier 
is sure to increase airflow..maybe 5%, at most maybe 10%, won't hurt.

optimum is the weber large t-body..just one big O like the VR6.
What I would like to see other than one custom manifold on that 
yellow Golf Supercharged 16v is a large chamber, short runner intake
manifold. I guess the demand isn't high. But you realizethe shorter 
the runners are the larger the rpm range in which resonance intake
effect is available. You will definitly loose a lot of low end 
torque, but at the top rpm range where the 16v really has it's power, 
the car will scream! Face it our non-tuned runner manifolds suck. You 
go with a large chamber w/the t-body mounted in the middle back, 
strait and let the intake tube do the 90deg bend beforehand nets you 
equal ammounts of air at the same velocity entering all combustion 
chambers. Then you can even get fancy like the variable manifold 
resonance (but too much $$$ probably)

Ryan

ryan

> ok, i had a throttle body on one of my car apart and i was curious if
> anyone did and porting to the plate at the beginning of the throttle body
> (which is a seperate piece, and seems different than the bigger throttle
> bodies i've seen on the A2 cars...same size, just different design....or i
> coudl be wrong...)...anyway, has anyone ground down the little humps in
> the middle of this plate...to make it more like a straight pass through
> adapter plate?....if not, does anyone think/know if this would be a bad
> thing?......it doesnt appear that it would mess thing up, but i really
> dont kwow alot about engine airflow design from an engineering point of
> view.....
> 
> just had too much time on my hands to think bout this today ;)
> 
> dave
> 
> 
> 
> --
> To subscribe or unsubscribe, send email to scirocco-L-request@scirocco.org,
> with your request (subscribe, unsubscribe) in the BODY of the message.
> 
> 
- --
To subscribe or unsubscribe, send email to scirocco-L-request@scirocco.org,
with your request (subscribe, unsubscribe) in the BODY of the message.

------------------------------