[T3] VW 041 Racing heads

[MotorHole@aol.com]

 > I have often come across the description (in American Mags etc.) of
 > 'Genuine VW 041 Racing heads" .What are these & how do they differ
 > from the std. twin port head. 
 
> I also read about various heads specified by numbers like this and 
> don't know what these numbers mean or where they came from. 
> Does anyone know? Can you write out an explanation of each? >>

I don't know who invented these numbers but the only place I've ever seen 
them is from the Mofoco catalog 1-800-553-8955, www.mofoco.com. In their 
catalog they 
list these heads which they build;

O4O: dual port, come stock or bored out for 90.5, 92 or 94 cylinders. cast in 
brazil
        machined in milwaukee, 35.5mm intake  X 32mm exhaust

O41: dual port heavy duty springs, 39mm intake, 32mm exhaust. made by mofoco

042: brand new, not rebuilt, made by moforo, stanless steel 40mm intake, 35.5 
exhaust, 3/4" reach spark plugs, standard bore 

I don't know. I have installed the 040's on a friends bus and had a hell of a 
time getting the exhaust on because the heads make the longblock a bit 
longer. I called them and they said to use a hammer on the exhaust. I stay 
with the stock heads, but they did work for my friend once I got the exhaust 
on, and Mofoco is great for rebuilding your solex carbs anyway.

-Chris
70 fastback
72 slowbus

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