Saw this and thought it was a pretty interesting setup to share. You'd want to have a fat wallet at $4400 starting price per pair. But uses stock style performance cams, push rods, tubes, barrels, flat top pistons etc.
The volumetric efficiency benefit would be the saving grace for any super hypo engine i would assume.
What a hideous rocker arrangement for the second set of valves!
Double the rockers, double the friction/wear points, double the mass. Those heads are huge chunks of metal too, and it doesn't look like they'd cool too well. Not for me thankyou. A very interesting exercise though, to try and cram four valves per cylinder into a pushrod engine.
I'm not sure why they have gone with such a complicated rocker setup.
The engines we rebuild at work are 4 valves per cylinder pushrod engines. They simply have a small metal 'bridge' between both valves and the rocker arms pushes down on the middle of this opening both valves.
I'm not sure why you couldn't run a similar setup instead of all that extra crap.
The engines at work are low reving diesels though, they top out at around 2000rpm, and only make like 3500hp 😀 So this setup possibly can't cope with revs.
Smiley 🙂
If you said I was a Volkswagen man, you'd be right.
