3.0 16V engine mods, etc

[Bergerac]

Haven't pushed the boost yet, refurbished variocam tensioner has finally arrived and is getting installed Monday.

[Thom]

I have finally found a clamp that's strong enough to hold the hose on the intercooler inlet. Man how fast that car is at 24 psi and part throttle only, to the point of not feeling brave enough to floor it.
With the larger turbo and the binary, not progressive clutch disc it is the polar opposite of what it was with the smaller turbo and 930 clutch disc, an apparent relaxed drive that requires composed and fully focused (read SLOW) gear changes yet pushes like a rocket once the torque wave kicks in. The ultimate high speed cruiser. It may seem odd as described and it took a while to get to grips with it but this is a one way ticket to relaxed, unassuming performance heaven. With that much punch delivered in such a relaxed manner topics such as pushing the car beyond 6000 rpm tend to become slightly redundant for road use.

IMG_20260515_111119.jpg (584.34 KiB) Viewed 204 times

Whilst cleaning the hose between the IC pipe and the intercooler inlet with brake cleaner I was struck to feel far less oil contamination than when the catch can was connected to the compressor inlet. Goes on to show and as experienced earlier that the 16V head flows so much that the compressor pulls way too much oil from the crank case with the stock breather layout.

[Tom]

I have finally found a clamp that's strong enough to hold the hose on the intercooler inlet. Man how fast that car is at 24 psi and part throttle only, to the point of not feeling brave enough to floor it.
With the larger turbo and the binary, not progressive clutch disc it is the polar opposite of what it was with the smaller turbo and 930 clutch disc, an apparent relaxed drive that requires composed and fully focused (read SLOW) gear changes yet pushes like a rocket once the torque wave kicks in. The ultimate high speed cruiser. It may seem odd as described and it took a while to get to grips with it but this is a one way ticket to relaxed, unassuming performance heaven. With that much punch delivered in such a relaxed manner topics such as pushing the car beyond 6000 rpm tend to become slightly redundant for road use.


IMG_20260515_111119.jpg


Whilst cleaning the hose between the IC pipe and the intercooler inlet with brake cleaner I was struck to feel far less oil contamination than when the catch can was connected to the compressor inlet. Goes on to show and as experienced earlier that the 16V head flows so much that the compressor pulls way too much oil from the crank case with the stock breather layout.

I ran 24psi on my 8v for a while and it was insane -- that was before the KW coilovers and the car would squat like crazy. Dyno showed my car right at 500/500 at the wheels. I can't even imagine what your car must feel like! Congrats -- been a very long journey I know. Results speak so much louder than words.

I may be in Italy late this summer -- might make a nice road trip!

[Thom]

Tom, if you can make it to my neck of the woods please drop me a line. Patrick had some excuses to not drive my car but I'd appreciate you to check it out for yourself. With the IC pipes that you made and the clutch disc recommendation (and other things I may have forgotten) there is a bit of yourself in it.

[Bergerac]

I have finally found a clamp that's strong enough to hold the hose on the intercooler inlet. Man how fast that car is at 24 psi and part throttle only, to the point of not feeling brave enough to floor it.
With the larger turbo and the binary, not progressive clutch disc it is the polar opposite of what it was with the smaller turbo and 930 clutch disc, an apparent relaxed drive that requires composed and fully focused (read SLOW) gear changes yet pushes like a rocket once the torque wave kicks in. The ultimate high speed cruiser. It may seem odd as described and it took a while to get to grips with it but this is a one way ticket to relaxed, unassuming performance heaven. With that much punch delivered in such a relaxed manner topics such as pushing the car beyond 6000 rpm tend to become slightly redundant for road use.


IMG_20260515_111119.jpg


Whilst cleaning the hose between the IC pipe and the intercooler inlet with brake cleaner I was struck to feel far less oil contamination than when the catch can was connected to the compressor inlet. Goes on to show and as experienced earlier that the 16V head flows so much that the compressor pulls way too much oil from the crank case with the stock breather layout.

How did you modify the breather to stop it sucking so much oil?

[Thom]

I simply removed the hose between the catch can outlet, fitted now with a hose pointing downwards (and tree huggers will appreciate that it has remained dry ever since), and the compressor inlet.
Only mod is the AOS outlet hole opened up to the size of the hose, a straight carry over from the previous 3L 8V engine.