I know this is a topic that has been beaten to death I'm sure but here goes anyways. I searched most any pertinent topic on it and never really got what I was looking for.
Here goes. I am build a engine for my Corrado. I am going to be running the G60 block with a 16v head. I bought a 50mm Scirocco Intake Manifold that will be coming in shortly.
What I have heard and read in one thread was that the plenum is smaller on the 50mm then on the 42mm. Is this true? if so is it a hugh diference or are we talking about just a very small amount.
Also if it si a big difference would it be worth making a Frankenstein Manifold by using the plenum off the 42 and the runners off the 50. I also read that someone did this but not who or how it came out.
I am going to be spending alot on this build up of the car I am not really worried if it costs me a few hundred dollars for something that si going to flow significantly better.