We don't see many S62 builds for forced induction, why is that? Well, for one, the cylinder walls are pretty thin as the motor is at max displacement. On stock internals it won't take too much. Properly building the motor is freaking expensive.
The best S62 builds have been by Discovery Automotive. Their stuff does not come cheap. However, they do the job correctly.
Check out this M5 build:
Dyno of the car at only 6,000 rpm (it will spin to 8,000):
Specs of the build:
Starting with the block:
Here is a picture of the surface/deck of the fully machined block with a pair of the Darten sleeves visibly pressed in place:
The Engine internals, 9.5:1 compression pistons, carillo rods:
Getting to work:
Here is a picture of the DCS pump now neatly mounted inside the frame rail. This particular modification is required in order to proper place the intake tube and the two mass air flow sensors:
Custom water injection tanks designed to fit behind the fender on the driver's side……all they require are for the bungs to be installed for the BMW OEM level sensor, the BMW OEM filler neck assembly, a vent hose, and the feed line for the fully map able Aquamist water injection system:
Being prepared to fit the Supercharger and supporting pieces:
I'm not exactly sure which Vortech unit this is:
Using a Nitrous Express N-tercooler setup on the heat exhanger, nitrous or C02 is used for cooling on the exterior:
The comparison of the new higher boost pulley compared to the first pulley. Estimation is now at 22lbs of boost with this pully set up:
Carbon Fiber discharge tubes having the water injection bungs bonded in place:
Very nice intake:
What wiring should look like:
The Ntercooler system in use:
The finished product:
The dyno runs we have done were for tuning purposes only. We can share that at 6000rpm the engine was putting down well over 600rwhp running only a little more then half its boost. When at its full peak potential the Blower will be at 22lbs. boost:
This car supposedly will make over 800 whp which I don't doubt. How much does a build like this cost? Well, D/A won't share prices as I asked a few years ago. Their setups are tailored to the individual so not an off the shelf kit. It also does not have an off the shelf price, expect to pay well over 30k.