The Racetractor. The End.

[Ruan]

Although we've not monitored the inlet temperatures actively, the turbo is thankfully about one of the more efficient units you can get for a sane cost, especially with the new billet compressor on - with the intercooler, the charge temperatures should be down from everything we've seen, the charge temperatures don't affect the heat into the cooling system as much as simply burning the fuel - sadly it's a real problem with indirect injection engines, when the IQ goes up, the heat transferred to the cylinder head and cooling system just goes up and up exponentially, you're spraying fuel into a chamber in the cylinder head and allowing it to go through a relatively tiny orifice onto the piston crown - the chamber is made from Inconel to stop it getting destroyed, but the heat transfer when you've added 100% more power to the engine is just extreme, it was touch and go at the stock 110hp! Oil cooler I think will help massively, essentially this is running about the same cooling system as a stock GTi6 which doesn't have forced induction nor part of the combustion chamber inside the cylinder head.

Usually you can keep this under control on the road, but on track, naturally it stresses the cooling system to extremes. Also, yeah the turbo is water cooled, so that'll be adding stress to the cooling system. It's why most manufacturers went off indirect and went to DI motors with the advent of more powerful CAD/CAE/CFD modelling - although indirect as a theory is a better technology, it's just not practical.