Something that I have always wondered was... Can 4.2 egts be a little higher than 3ltrs? Reason is the turbo on a 3ltr is a vnt type, which is more prone to heat failure than a STD turbo setup - like what is on a 4.2.....

You never (or very rarely) see vnt turbos on petrol vehicles because of the hotter exhaust gases, which are known to kill the vnt setup...

I understand the block heat still has an effect, but just thought a 4.2 (or even a 2.8) would be more reliable at a hotter egt.

What do others think?


And for the record, I never allow mine over 550. Everyday driving sees me around 250-400