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Old 03-14-2018, 08:40 PM   #1 (permalink)
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Floating intake power valves

Does anyone remember or know about Floating intake power valves??

These have been patented a few times, the concept is a floating valve behind the stock valve that is close by the beginning of compression and give a much higher power cycle in lower RPMs.

Makes your motor a torque monster.

There was a shop in Vegas making them.

I lost his contact info.

Rich

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Old 03-15-2018, 08:38 AM   #2 (permalink)
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I was under the impression torque is improved on the low end by having appropriately small valves - that's the point of Honda's VTEC, isn't it? You have small / fewer valves open at the low end because it still flows adequately, and you get better combustion due to better mixing. More/larger valves open as the engine revs up to let in the extra air needed.
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Old 03-15-2018, 09:22 AM   #3 (permalink)
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These are a set of floating second valve behind the main original valve...when the piston starts up during the compression stroke the pressure closes this free valve causing a earlier closing that the cam is programed for and this makes higher compression and lower the torque curve, BUT at higher RPMs the reaction time is cut so at one point things are too fast so your stock cam timing takes over.

It gives you a variable valve timing: a very small low RPM timing and then as you RPMs rise a power cam (stock) or even a performance cam.

I do not know how well these ware, nor if carbon build up will mess with them.

BUT I plan on trying them IF I can find (the) a company making them.

There have been patterns issued for versions of these over some 50 years.

Rich
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Old 03-15-2018, 01:11 PM   #4 (permalink)
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I found a couple of documents BUT cannot put them on a website.

Note on these they were called "Torque Valves"

Found the Patent: https://patents.google.com/patent/US6598577

This is what I am looking into.

Last edited by racprops; 03-15-2018 at 01:23 PM..
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Old 03-15-2018, 10:23 PM   #5 (permalink)
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This makes me think of the Rhoads lifters

They would pump up to full height for better flow as the oil pressure and rpms increased, but at low rpms reduce valve lift and duration for more torque
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Old 03-15-2018, 10:42 PM   #6 (permalink)
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And I know of Rhoads lifters and A) they do not work very well and B) are nosy...

And I drive a 2000 Mercury and it has a wide oil pressure range as low as 10PSI and as high as 80PSI it would be hard to set up Rhoards Lifters in such an engine.

Until they make heads for Ford & Chevy engines with then new camless electric hydraulic valves, this was the best I can get of either my Ford and Chevy Van.

Rich

Last edited by racprops; 03-15-2018 at 10:52 PM..
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Old 03-15-2018, 10:46 PM   #7 (permalink)
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Not much I hate more than nosy lifters.

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