Twin Turbo is still alive after dyno session! Here is the dyno sheets to look for. Those first two are from best results with 0.75 bar boost pressure and two others are from the wild testing of turning the boost knob only 1/4 turns. What a huge difference and our dyno man backed off from the pull as the boost started to climb over 1 bar of pressure .

Yes, I have to admit that we are chickens because we opted to run with only 0.75 bars at the next races. But, now Jyrki gets more experience about the car and the engine and seems to be that the engine holds fine that amount of load.

We run with E85 and with 32 degrees of igniton advance and we had no problems at all. No detonation, no nothing.

499.2 hp @ 5600 RPM and 678.5 Nm @ 4600 RPM (500.37 lb/ft)

524.9 hp @ 4700 RPM and 795.5 Nm @ 4700 RPM (586.65 lb/ft)

And this next illustrates the differences in curves .

So, this was very interesting and busy day. Jeah, sure... I hoped for 800 to 1000 HPs, but that is just behind the turning of the knob .

 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)

Pics now, video later...

Intercooler and the lines were bit of a challenge .

 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)

Impressive! Shouldn't the boost curve peak sooner than it did? It's like they're too big, or just can't spool quick enough on the dyno. Maybe the different technique at the track will result in a higher boost pressure at launch.


Lawrenceville, GA

Curve is just fine when using the 1.5 kilos of boost. Targets nicely between 5-6000 RPM if there is nothing to restrict it.(like nerves)

And yes, launch RPM must be well over 2500 if wheels can handle it.


Hyvinkää, FI

Small clip of that 1.02 run...

http://www.youtube.com/watch?v=hmxE-sQ0E-s&feature=youtu.be

 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)