50mm intake hurts performance!?

[robw_z@yahoo.com (Robbie Cotner)]

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I was reading the 8/86 Car and Driver review of the 16v Scirocco, and noticed this:

"The original prototype had excellent peak output, but its torque curve was a bit on the narrow side. By carefully tuning the intake-manifold design, including a reduction of the runner diameter from 2.0(50mm) to 1.7(42mm) inches, the engineers were able boost peak torque from 118 to 120 pounds-feet. Peak power was helf at 123hp, but the engine now has a broader torque curve than it originally did, developing 114 or more pounds-feet of torque from 3000 to 6000 rpm"

I always wondered why they went through the trouble of casting both 50mm and 42mm intakes, but is that the real reason?  Just wondering, I own an 8v myself but thought this was interesting-

Rob



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<P>I was reading the 8/86 Car and Driver review of the 16v Scirocco, and noticed this:</P>
<P>"The original prototype had excellent peak output, but its torque curve was a bit on the narrow side. By carefully tuning the intake-manifold design, including a reduction of the runner diameter from 2.0(50mm) to 1.7(42mm) inches, the engineers were able boost peak torque from 118 to 120 pounds-feet. Peak power was helf at 123hp, but the engine now has a broader torque curve than it originally did, developing 114 or more pounds-feet of torque from 3000 to 6000 rpm"</P>
<P>I always wondered why they went through the trouble of casting both 50mm and 42mm intakes, but is that the real reason?&nbsp; Just wondering, I own an 8v myself but thought this was interesting-</P>
<P>Rob</P><p><br><hr size=1>Do you Yahoo!?<br>
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