Koenigsegg free valve system

[redneck]

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I love the DIY aspect.

Other “Do it yourselfers” and small businesses will retrofit the technology to vast array of other engines.

The increase in performance and efficiency is nothing to sneeze at.

Reliability will be dealt with and overcome.

Free valve is the future.

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[cRiPpLe_rOoStEr]

Originally Posted by redneck

Other “Do it yourselfers” and small businesses will retrofit the technology to vast array of other engines.

I wonder at which cost it would happen, but maybe having a software catering to each application will be the most critical part than the hardware itself which eventually may be interchangeable between different engines.

[Isaac Zachary]

Has anyone else posted the Miata build?

http://www.youtube.com/watch?v=_Ljwk-ByvjI

In the second video he posted all his documented work for free. This makes me want to try this,

[cRiPpLe_rOoStEr]

Originally Posted by Isaac Zachary

This makes me want to try this

Me too. I'd be curious to see how far it could increase performance and fuel economy on a turbocharged 1.0L 3-cyl engine that GM released with port-injection in Brazil and direct injection elsewhere.

[Isaac Zachary]

The fact that this guy got a Mazda Miata to run and drive without a cam is impressive in and of itself.

I guess the real question would be: could it be worth it?

There are costs associated with fabricating a camless head. It didn't seem too much though as it can be done with a lot of off the shelf parts and simple machined pieces.

But then there's longevity and the chance of destroying a good engine.

But then there's the chance of greatly improving fuel efficiency and power at the same time.

[cRiPpLe_rOoStEr]

Originally Posted by Isaac Zachary

I guess the real question would be: could it be worth it?

Most likely it would be worth.

There are costs associated with fabricating a camless head. It didn't seem too much though as it can be done with a lot of off the shelf parts and simple machined pieces.

I'd be more concerned about the electronic control and how it would integrate to the ignition and injection.

But then there's longevity and the chance of destroying a good engine.

A cam belt slap is also quite expensive to fix.

But then there's the chance of greatly improving fuel efficiency and power at the same time.

Considering it would also eventually not require some components such as a throttle-body, and keeping port-injection would allow avoiding the OPF which is now required in Europe and the USA for gassers fitted with direct injection, it seems worth a try.

[cRiPpLe_rOoStEr]

The engine of this beauty has an electro-hydraulic intake valvetrain, while the exhaust valvetrain still resorts to a camshaft. Makes me wonder to which extent would be better to use an electro-pneumatic system for the exhaust instead of going electro-hydraulic like the intake.

[freebeard]

I didn't think about this much earlier today when you posted #27, but I was looking at Donut Media videos on Youtube, then Wesley Kagan's February video, and now I'm thinking about doing this to a flat four boxer. I'd always liked the idea of a flathead flat-four; maybe this would be the way.

One could do a real tight dual cannon exhaust and not have to worry about valve adjustments.

[cRiPpLe_rOoStEr]

Originally Posted by freebeard

now I'm thinking about doing this to a flat four boxer. I'd always liked the idea of a flathead flat-four

Remember that D-Motor aeronautical engine? It's a flathead available either as a flat-4 or a flat-6.
https://d-motor-usa.com/index.php/lf26/

[freebeard]

Interesting.

SAFE
When a valve of an overhead valve engine fails, the engine stops and an emergency landing usually ensues. When a valve of a side valve engine fails, only one cylinder ceases to function and the plane has the power to make a landing at the nearest airport, saving both airframe and passengers!