Theirs follows a summary of the good the bad & the ugly.
DAY1
Figures made 769bhp @ 7.5k
.....................556ft/lb @ 6k
at 2.5bar on a 40/42 Turbo (the big one)
To me these seemed good but over Supper Mark declared that the Spec was not working as the Turbo was surging & he could not get the boost in to get massive Torque.
DAY 2
I assumed we would return to the smaller Turbo we had bought but Mark decided to build a Hybrid from the two & just try it. First pull of the handle
had Mark more excited than a Jenna Jamison porno.
At 4.5k it was over 600ft/lb & still their at 6.5k peaking at 644ft/lb at 5k.
Power was about 30bhp up on the other combo throughout the range we monitored & the last recorded point was 741bhp @ 6.5k with a probable 1k still to reach peak, yes lads 800bhp from this for sure.(I will post the graph of the aborted run probably tomorrow)
Then the game came to an abrupt halt, the 7k point was 50bhp down & water was seen. Mark said head gasket. The pictures below show the actual problem & reveals Totb was over.
Thats a .005inch feeler the Liner has distorted & is .002inch proud of the block which caused the head gasket to pop as shown below, their is also damage to the head.
Thir isnt a lot of gloom in the MAD camp as Mark got a glimpse of the promised land (he was probably talking about Genna again) the engine Spec will be changed on rebuild as its far from optimum for the Fuel used.
I think I can speak for Mark when I say the next effort will make 800+bhp & 650+ torque off gas. This on the old Swedish exhaust & a spaced rs500 inlet which showed no signs of having reached its limit.