CB7Tuner Forums

Go Back   CB7Tuner Forums > Parts & Performance > Performance Tech > Naturally Aspirated

Reply
 
Thread Tools Rate Thread Display Modes
Old 10-31-2006, 12:59 AM   #1
F22Turbo702
CB7tuner Member
 
Join Date: Jan 2004
Location: Oregon
Posts: 630
F22Turbo702 is cool... so far.
Send a message via AIM to F22Turbo702 Send a message via Yahoo to F22Turbo702
Very unique intake valves

So, a guy named Vince who is a tinkerer/inventer approached me several months ago about a very unique valve design that he resently patented.

He wants to put a set of these valves into my engine for testing purposes and to get some data on them. He's only used them in V8's, and other domestic engines and is curious as to how much of a performance impact they will have on an econo-box 4 banger.

Now, I'm sure most of you haven't the slightest idea as to what I'm talking about...a valve is a valve right?...wrong.

These valves that he has designed use a CNC machined floating ring around the valve to serve as a floating seat, this floating seat allows the valve to close itself when intake air tries to reverberate back into the manifold. Follow me so far?

These valves are only for the intake side of the head and pretty much allow you to have as much overlap as mechanically possible without any losses in the low end, as a matter of fact these valves cause the torque curve on the low-end of the powerband to see dramatic increases. Also, because the valve essentially closes itself when air tries to escape the combustion chamber it makes even the most wildly cammed motor idle like stock.

I've seen the prototypes for these valves and I have also seen the documentation and dyno sheets. The best example he gave me was a Jeep rock crawler, they loaded it on the dyno, and placed a load on it, in order to maintain that load without stalling the motor, it had to be held at nearly 4000rpm. They then tested the same vehicle with his intake valves installed under the same load, and the Jeep idled through the load at only 550rpm...that's astonishing in my book. Also, the torque curve was impressive and climbed nearly 50lbs. ft.over the baseline, at only 800rpm...

Now, Vince basically wants me to install these intake valves and the largest overlap cam I can find. He has guarenteed that even with something similar to the Delta 282 race cam, my car will idle even lower than stock and will come to life at 500rpm and all the way till the cam runs out of juice, no 4000-7000rpm powerbands, just constant, consistent power.

I'll be seeing him again at SEMA tomorrow to give him one of my F22a intake valves so that he can make the prototypes for me. I just wanted to tell you guys about this amazing opportunity and I wanted to get your input. I know that the idea is a bit out there, but I have seen the proof and I understand the logic behind the design. This design also works well on turbo motors, allowing greater overlap in the cam without sacrificing any power. Let me know what you guys think, and I will keep you posted. I also need to know if anyone has specs on the Delta 282, as well as personal experience with idle, powerband, piston-valve clearance, etc. I will try to get some pictures or diagrams of the valves if he'll give them to me, but I know that these are still in the prelimenary stages of design and manufacture and he is still rather hush-hush about them.

-Kyle
__________________
SOHC Non-VTEC F-series for life

"It is the fools prerogative to utter truths that no one else will speak."
-Morpheus (The Sandman)
F22Turbo702 is offline   Reply With Quote
Old 10-31-2006, 01:48 AM   #2
shoxr10
CB7tuner Member
 
Join Date: Mar 2005
Location: toronto
Posts: 114
shoxr10 is cool... so far.
I'm skeptical but trial and error never hurt anybody. If It ends up working and you see the dramatic increases and improvements, how much would the valves and the cam be sold for???
__________________


I like my women like I love my cars, built for comfort and speed........
shoxr10 is offline   Reply With Quote
Old 10-31-2006, 06:27 AM   #3
Mike
CB7tuner Member
 
Join Date: Aug 2005
Location: NY
Posts: 1,390
Mike is cool... so far.
Send a message via AIM to Mike
sounds like an infomertial

correct me if im wrong but in a turbo w/ overlap situation the intake valves donít really matter because if the exhaust valve is open when air is being forced in there its going to start pushing out the exhaust valve before its closed whether or not you got some special intake valve
__________________

Old Ride-New Ride

Last edited by Mike; 10-31-2006 at 06:29 AM.
Mike is offline   Reply With Quote
Old 10-31-2006, 01:36 PM   #4
Dutchaccord
Contributing Member
 
Join Date: Sep 2003
Location: Netherlands
Posts: 557
Dutchaccord is cool... so far.
Send a message via AIM to Dutchaccord
think again

If theres no more air that can be crammed into the cylinder the piston going up will create a pressuredifferance causing this valve to shut. No matter what pressure.
__________________

No projects at the moment... danm

2k16:
For sale Demon+ tunerview RD2 Make offer brand new in box
Dutchaccord is offline   Reply With Quote
Old 11-02-2006, 09:52 AM   #5
MRX
Moderator
 
Join Date: Dec 2003
Location: Cal
Posts: 3,919
MRX is cool... so far.
Send a message via AIM to MRX
interested...would love to try them out myself actually.
__________________
Knowledge is power...in EVERY sense of the word

FSAE (F Series Accord Enthusiasts) ..."A dying breed thats taking it to the next level" #12
MRX is offline   Reply With Quote
Old 11-02-2006, 10:54 PM   #6
F22Turbo702
CB7tuner Member
 
Join Date: Jan 2004
Location: Oregon
Posts: 630
F22Turbo702 is cool... so far.
Send a message via AIM to F22Turbo702 Send a message via Yahoo to F22Turbo702
Well, I talked to Vince, and gave him one of the f22a's intake valves and he is going to starting working on it sometime next week, after SEMA is over.

I had Dennis from HP Heads (one of the best head guys in Vegas) take a look at the design. He believes that will work well, but he's not sure about two issues; noise and long term street use. He said these may cause some noise because the rings move and then the valve shuts on them, also could have issues if the rings become dislodged from their seats around the valves or get stuck in the closed position. But other than that he thought there was sound logic behind the design, and the dyno doesn't lie.

For any of you that may not have understood what I meant when I explained how these work...consider it "true" "variable valve timing". I say that because the valve will shut, not when the cam determines it should, but when cylinder pressure is high enough to close it on its own. Vince also explained to me that as the RPM increases the valves will end up shutting closer and closer to where they "should", so these are really designed to take up the area of the powerband where a larger cam doesn't make as much power, it fills in the torque curve. I'm still trying to get a copy of the before and after dyno graphs from the Jeep test.

-Kyle
__________________
SOHC Non-VTEC F-series for life

"It is the fools prerogative to utter truths that no one else will speak."
-Morpheus (The Sandman)
F22Turbo702 is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 01:08 PM.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.