A few interesting topics-
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Joined: Aug 2001
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From: Nashville
A few interesting topics-
I found an interesting page that had some various difrent technology on it. Instead of just picking one of the interesting things and discussing it here, I figure I will link the 2 pages and see if anyone finds something interesting on it to discuss or give their opinion on.
http://www.geocities.com/MotorCity/L...evolution.html
http://www.geocities.com/MotorCity/L...lutionpg2.html
http://www.geocities.com/MotorCity/L...evolution.html
http://www.geocities.com/MotorCity/L...lutionpg2.html
Registered User
Joined: Nov 2001
Posts: 2,985
From: In a house by the bay
A multi-piece valve..... looks like a ticket to disaster.
A few things not mentioned in that little quiff, what is the operating mechanism and how reliable is it at 6k rpm and up? How does carbon buildup effect it? What about heat dissipation?
I'm old school, I believe guys like Mikhail Kalashnikov proved that the best things are most often the simplest. I don't think the multi-piece valve is the better mousetrap but I think technology will lead to the best solution there.... vvt, etc.
The intake is cool...
The 4-valve heads... cool also.
The late Jim Feuling's heads..... well that guy was a genius. He also built a 2-valve cylinder head for big block chevys that was pretty amazing. I remember reading an article about a 502 with his heads that made close to 700 lbs ft of torque on 87 octane, running 12:1 compression, 22* of total timing and with a bsfc of like ~.40!
Interesting stuff Ken.
-Mindgame
A few things not mentioned in that little quiff, what is the operating mechanism and how reliable is it at 6k rpm and up? How does carbon buildup effect it? What about heat dissipation?
I'm old school, I believe guys like Mikhail Kalashnikov proved that the best things are most often the simplest. I don't think the multi-piece valve is the better mousetrap but I think technology will lead to the best solution there.... vvt, etc.
The intake is cool...
The 4-valve heads... cool also.
The late Jim Feuling's heads..... well that guy was a genius. He also built a 2-valve cylinder head for big block chevys that was pretty amazing. I remember reading an article about a 502 with his heads that made close to 700 lbs ft of torque on 87 octane, running 12:1 compression, 22* of total timing and with a bsfc of like ~.40!
Interesting stuff Ken.
-Mindgame
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Joined: Jun 2003
Posts: 50
From: Louisiana
Method for Madness
Jim Fueling (owner of 2 world speed records) 7 technology patents and various other accomplishments. W3 AMERICAN motorcycle that put the best Japanese bikes to shame
(Genius is an understatement).
I also read the article about the 502 I think they had some fuel reversion problems but after they got those fixed it was a mule.
The vtec valves will be the future for some apps. tests show about a 20% increase in flow. I know some guys that run them on some bikes that have a lot of hours on them they are no more prone to carbon problems than a regular valve and seat is. Will they handle bigger engine we will see.
The Dominions would be great if ARAO would just offer a few intakes for the heads (Such as a regular carbed, A lt1, etc) you could buy as a package and think what they would do with vtec valves.
The rockers I would have to wait and see about.
(Genius is an understatement).
I also read the article about the 502 I think they had some fuel reversion problems but after they got those fixed it was a mule.
The vtec valves will be the future for some apps. tests show about a 20% increase in flow. I know some guys that run them on some bikes that have a lot of hours on them they are no more prone to carbon problems than a regular valve and seat is. Will they handle bigger engine we will see.
The Dominions would be great if ARAO would just offer a few intakes for the heads (Such as a regular carbed, A lt1, etc) you could buy as a package and think what they would do with vtec valves.
The rockers I would have to wait and see about.
Banned
Joined: Aug 2001
Posts: 3,505
From: looking for a flow bench so Brook and I can race
what ever happened to the theory of a camless motor using pnumatic (sp?) and/or hydrolic controlled valve train?
Wasn't the idea that you can have a computer controlled, camless valvetrain that operated on pnumatic/hydrolic soliniods?
What was the problem. The only thing I've ever heard is that they cant make the soliniods or whatever they will use strong enough
Why not electronically controlled valvetrain? I mean I know TRW has already made a competely electronic 4 wheel brake system that uses no vacuum assist or hydrolic pressure. And its DAMN strong, especailly for its early stages of "evolution"
So I guess my question is- why in this day- have we not created a camless motor?
baby smooth idle, wicked top end, no real high RPM valvetrain issues or valvefloat, any "cam profile" you want and all that good stuff.
so.... why
Wasn't the idea that you can have a computer controlled, camless valvetrain that operated on pnumatic/hydrolic soliniods?
What was the problem. The only thing I've ever heard is that they cant make the soliniods or whatever they will use strong enough
Why not electronically controlled valvetrain? I mean I know TRW has already made a competely electronic 4 wheel brake system that uses no vacuum assist or hydrolic pressure. And its DAMN strong, especailly for its early stages of "evolution"
So I guess my question is- why in this day- have we not created a camless motor?
baby smooth idle, wicked top end, no real high RPM valvetrain issues or valvefloat, any "cam profile" you want and all that good stuff.
so.... why
Registered User
Joined: Dec 1999
Posts: 2,248
From: Houston, TX
Originally posted by treyZ28
what ever happened to the theory of a camless motor using pnumatic (sp?) and/or hydrolic controlled valve train?
Wasn't the idea that you can have a computer controlled, camless valvetrain that operated on pnumatic/hydrolic soliniods?
What was the problem. The only thing I've ever heard is that they cant make the soliniods or whatever they will use strong enough
Why not electronically controlled valvetrain? I mean I know TRW has already made a competely electronic 4 wheel brake system that uses no vacuum assist or hydrolic pressure. And its DAMN strong, especailly for its early stages of "evolution"
So I guess my question is- why in this day- have we not created a camless motor?
baby smooth idle, wicked top end, no real high RPM valvetrain issues or valvefloat, any "cam profile" you want and all that good stuff.
so.... why
what ever happened to the theory of a camless motor using pnumatic (sp?) and/or hydrolic controlled valve train?
Wasn't the idea that you can have a computer controlled, camless valvetrain that operated on pnumatic/hydrolic soliniods?
What was the problem. The only thing I've ever heard is that they cant make the soliniods or whatever they will use strong enough
Why not electronically controlled valvetrain? I mean I know TRW has already made a competely electronic 4 wheel brake system that uses no vacuum assist or hydrolic pressure. And its DAMN strong, especailly for its early stages of "evolution"
So I guess my question is- why in this day- have we not created a camless motor?
baby smooth idle, wicked top end, no real high RPM valvetrain issues or valvefloat, any "cam profile" you want and all that good stuff.
so.... why
.
Ford Ryan
Registered User
Joined: Apr 2000
Posts: 326
From: northwest suburbs
Does anyone know a way to locate all the patents that Benz has. Supposedly most of the auto industry patents are held by benz. I believe they are working on the pneumatic or electronic operated valves. They do have brake by wire too.
Registered User
Joined: Oct 2000
Posts: 507
From: Sioux Falls, SD
Originally posted by treyZ28
what ever happened to the theory of a camless motor using pnumatic (sp?) and/or hydrolic controlled valve train?
Wasn't the idea that you can have a computer controlled, camless valvetrain that operated on pnumatic/hydrolic soliniods?
What was the problem. The only thing I've ever heard is that they cant make the soliniods or whatever they will use strong enough
Why not electronically controlled valvetrain? I mean I know TRW has already made a competely electronic 4 wheel brake system that uses no vacuum assist or hydrolic pressure. And its DAMN strong, especailly for its early stages of "evolution"
So I guess my question is- why in this day- have we not created a camless motor?
baby smooth idle, wicked top end, no real high RPM valvetrain issues or valvefloat, any "cam profile" you want and all that good stuff.
so.... why
what ever happened to the theory of a camless motor using pnumatic (sp?) and/or hydrolic controlled valve train?
Wasn't the idea that you can have a computer controlled, camless valvetrain that operated on pnumatic/hydrolic soliniods?
What was the problem. The only thing I've ever heard is that they cant make the soliniods or whatever they will use strong enough
Why not electronically controlled valvetrain? I mean I know TRW has already made a competely electronic 4 wheel brake system that uses no vacuum assist or hydrolic pressure. And its DAMN strong, especailly for its early stages of "evolution"
So I guess my question is- why in this day- have we not created a camless motor?
baby smooth idle, wicked top end, no real high RPM valvetrain issues or valvefloat, any "cam profile" you want and all that good stuff.
so.... why
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