Unicam = Nothin Is New

Honda's use of the unicam where one set of valves is operated directly from the cam lobe and the other set is operated by a follower is a cool idea. They used it for space savings. I though, "way to go, Honda, keep on comming up with new and cool stuff"

Then today I was looking at the valve train of a Junkers Jumo 211b V-12 motor from a German WWII bomber, and I noticed they used the same layout. While this is a rather nerdly discovery, I though it worth mentioning, espescially because it is thought of as innovative in 2010, but it was being used in 1936.
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back to your regularly scheduled oil thread...........

They should have used synthetic in that motor, as it is filthy.

ONE LOUSY REPLY AND IT'S TURNED INTO A DAMN SYNTHETIC VS. DINO OIL THREAD ALREADY!!!! :beatdeadhorse:



:unsure: :goofy: :laugh:

(And it's a roller cam as well!) :unsure:

It's not a real Junker -it uses a cam chain instead of gears. I don't think they should count it.

[image: View Post]timmythecop, on 19 March 2010 - 11:02 AM, said:

Then today I was looking at the valve train of a Junkers Jumo 211b V-12 motor from a German WWII bomber,
You need a new engine for your pick-up? :unsure:

Look closer, the cam does not operate directly on the valve. Both intake and exhaust valves are actuated by cam follower/lever. :unsure:

That's cool, is he rebuilding it? That HAS to be a new cam.

Oh and its a three valve head too..., some body call Ducati.
I did notice those cam lobes have a pretty steep ramp on them as well.

[image: View Post]JES_VFR, on 24 March 2010 - 11:02 PM, said:

I did notice those cam lobes have a pretty steep ramp on them as well.

Mate that's not a ramp, it's a hammer! That top end must have taken some serious grunt to turn over.

Don't forget that they're roller rockers.

Rolls-Royce Merlin:

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