Quote:
Originally Posted by Thecastle
Quick question, why did you switch to stiffer valve springs? Where you experiencing valve float from too much back pressure due to too small of turbines on the stock turbos? Or was it for my rpm had room?
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Original were so loose.
2,5bar boost and ~3bar back pressure was enough to make valves float.
I had 400hp with orig springs too, but very very low rpm.
Yes, even the bigger turbine wasnīt too big and yes I wanted more useable rpmīs.
Here is the pic from the situation before new valve springs.
407hp/2887rpm and 976nm/2565rpm
