Guess you missed the RS6? That’s pretty significant.
For the record, the twin turbo or tuning part of the build are not the hard part. Not even close. There are a few twin turbo cars that JHM has built for people. A couple in Europe on that list. One was count vohn’s own car (a tiptronic ironically) that he put the kit on when fabbing it up.
The problem with bluerocket’s car is that he wanted built motor, massive power. Who doesn’t? Well the JHM research into the 4.2 has found that at about 450 whp the internals have problems. Rods are the weak link, but the pistons aren’t much better. They had a supercharged B6 running 490 whp on 034’s dyno at one point trying to blow it to see where the limit was. A more violent torque curve did the trick. Then they did it again. Then Count Vohn’s turbo car with an improperly installed boost gauge was the next one. I could put my fist throught the hole in the block that the piston created when it was ‘jettisoned’.
So the 450 whp mark is where JHM wants the stock motor to stay below. Get beyond that and you’re looking at spaghetti’d rods.
What’s next…‘drop in rods’ you might say? NIX. Pistons too? NIX. It’s far more complicated. They basically needed to re work the entire block. I’ve been lucky enough to hear some of what they worked on when meeting with the JHM guys, but I wont share it here as it’s their business to do that. Anyway, this is the delay with these cars…it’s the motor build part of the equation. That’s why it’s taking so long. Because 91GL wanted to go supercharged, he was able to leave his motor with JHM and use his second motor with stock internals and the ‘stage 1’ supercharger setup. BlueRocket’s car was far more complicated…they couldn’t ‘detune’ his car and just give it back to him while they completed the motor build project. I believe they offered him back his car with the stage 1 supercharger instead of waiting for this massive build, but since he didn’t take that option, he appears to be in it for the long haul. Good guy. Again, we owe him.
I’m sure if Notorious VR really wants to know, he need only ask his friend to explain more to him.