> Lisa Quinn asks:

> Hi all! I am confused. I have an '81 westy with a 2.0L fuel injected
> air cooled engine. Is it a type IV? If it is a type IV, will parts
> like heat exchangers listed "for all type IV" fit my engine?
> Thanks in advance!!
> Lisa
> 

 Well, yes and no. Your engine is a type IV by design but there are a few   
 variations that prevent everything fitting everything. Heat exchangers are
 one of the variations. The heads used up until 1979 are called "round port
 heads" and the heat exchanger pipes extend up inside the head and seal with
 a copper "ring". Head from 1979 on <sometimes referred to as "vanagon heads"
 or "square port heads"> have a flat sealing surface  for the heat exchangers
 and use a more conventional gasket. I think it is necessary to get the 
 correct heat exchangers for the type of head you have.

 Be a little wary of the "fits all type IV" phrase. There are CARS <the VW
 411 and 412> which are the true type IV. They are the original "hosts" of 
 the type IV engine, which subsequently spun off into the bus and the Porsche
 914-4. If the remark "fits all type IV" was applied to heat exchangers, that
 would indicate to me that they are early type <round port> since the 411 and
 412 were long since dead and gone before the heads were changed to square 
 ports. 

 This "type" stuff is always confusing.

 Dave Kautz