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Oversized Intercoolers

In message <c=GB%a=_BT%p=BT%l=BTEA/BTLIPHUB3/0009036C@b48ntas12.comnet.bt.co.uk> "Pearce,MR,NAIC4,PEARCEM3 M" writes:

> Basically, the main water rad is replaced with a uprated (higher
> capacity) device, and the aux rad is then replaced with a water rad for
> the charge cooler circuit. Water is then pumped through this rad, across
> the charge cooler matrix, and back. The charge cooler sits where the OEM
> intercooler sits.

Well, I simplified.  The auxiliary radiator in an ur-quattro is replaced in the 
Sport by a massive intercooler.  It has a huge surface area, and also seems 
slightly deeper.  The radiator is moved slightly downwards and is set at a 
slight angle - but it seems to be the same as the ur-q's radiator.
Can this be the case?  How can the Sport's 221KW engine be cooled by a single
radiator, when the WR/GV/WX/MB/RR engines all have an auxiliary?

 Phil Payne
 Committee Member, UK Audi [ur-]quattro Owners Club