Bakerlite
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So basically , full of hot air = you don't know me and my posts make no sense to you?
Yeah, I think we'll just move on from that one.
Comp Cams recommendation evaluation
- Thread starter 999yards
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Yeah, I think we'll just move on from that one.
They don't have time to bleed down at higher rpm. When the engine is at low rpm, the lifters have time to bleed, at high rpm, it doesn't...
Calling them "fast bleed" is a little misleading.
You still haven't provided any PROOF of this. Just alot of hot air....
Show some proof. Show me a dyno test of an engine with standard lifters and then replaced with rhoades, and show the torque/hp numbers. Show that rhoades lifters did not make any difference.
Bakerlite
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So you don't believe Vizard who has tested 1000's of cams and lifters, that's not good enough for you? Or as Ramm said, none of the other leading engine builders use them? How many times do you see them used in engine build stories, and if they were so good, then just about everyone with a hydraulic cam would be using them by now. But guess what??? there not using them are they??? And there's a reason for that and you choose to simply ignore that reason....
All the new hydraulic lifter technology is going to less bleed down with lighter lifters and with way tighter clearances so they can perform better at longer durations and higher lifts, and RPM's but don't let those facts get in the way of some adverting you read in a car mag back in 1986 .You want to make your cam smaller all the way through the rev range? , then be my guest and use the snake oil lifters. Just don't go trying to push them onto some other poor unsuspecting sucker.
It's become plainly obviously to me that we are talking about a subject that is way over your head. Tell you what... I've just seen some electric turbos for sale on ebay. Why don't you go and put one of those on your car. Then you can have two secret weapons under the hood.
All the new hydraulic lifter technology is going to less bleed down with lighter lifters and with way tighter clearances so they can perform better at longer durations and higher lifts, and RPM's but don't let those facts get in the way of some adverting you read in a car mag back in 1986 .You want to make your cam smaller all the way through the rev range? , then be my guest and use the snake oil lifters. Just don't go trying to push them onto some other poor unsuspecting sucker.
It's become plainly obviously to me that we are talking about a subject that is way over your head. Tell you what... I've just seen some electric turbos for sale on ebay. Why don't you go and put one of those on your car. Then you can have two secret weapons under the hood.
Bakerlite
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Yes , they do have time to bleed down at higher rpm, even the slightest bleed will be effecting your cam timing. Also if you go to a lighter weight oil, or heaver valve spring, it will also effect how the lifter performs. Why do you think the cam is "lumpier" and the engine has less Vac when it's cold?
I think "fast bleed" is a spot on description for what they are.
Then why did my Rat
Chev,pick up another 300 rpm,before valve float from the swap? It was .540" advertised lift,stock Chevy parts ?.....
So you don't believe Vizard who has tested 1000's of cams and lifters, that's not good enough for you? Or as Ramm said, none of the other leading engine builders use them? How many times do you see them used in engine build stories, and if they were so good, then just about everyone with a hydraulic cam would be using them by now. But guess what??? there not using them are they??? And there's a reason for that and you choose to simply ignore that reason....
All the new hydraulic lifter technology is going to less bleed down with lighter lifters and with way tighter clearances so they can perform better at longer durations and higher lifts, and RPM's but don't let those facts get in the way of some adverting you read in a car mag back in 1986 .You want to make your cam smaller all the way through the rev range? , then be my guest and use the snake oil lifters. Just don't go trying to push them onto some other poor unsuspecting sucker.
It's become plainly obviously to me that we are talking about a subject that is way over your head. Tell you what... I've just seen some electric turbos for sale on ebay. Why don't you go and put one of those on your car. Then you can have two secret weapons under the hood.
Still a bunch of hot air with no data.... :bootysha:
LMAO!!!!^^^ No butts about it.....
The rhoades lifters were tested with high volume oil pumps, high pressure pumps, and different viscosity oil by Hot Rod back in the late 70's and they found that they don't affect the rhoades lifter.
As far as bleeding down at higher rpm.
How many times per second does a lifter cycle at an 900 rpm idle? :read2:
How many times per second does a lifter cycle at 6000 rpm? :read2:
Do the math, post it up and let me know. I'm waiting.... :-\"
I've just seen some electric turbos for sale on ebay. Why don't you go and put one of those on your car. Then you can have two secret weapons under the hood.
Sorry, I'd rather be blown.
Spoken from a guy that's been here since 2007 and only 1 friend on his list... :tool:
What does that tell you? --> Real charmer... :goodman:
Bakerlite
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Wow , you just don't see it do you.... The lifters made your cam look SMALLER to the valve spring, thus staving off valve float slightly before the spring totally lost control. Springs do not just suddenly go into float, they lose control of the valve train before you can feel it...:banghead:
Bakerlite
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In 2005 Hod Rod magazine tested them and the conclusion was that you lost some top end power with them...
LOL.. yeah , so oil makes no difference?, then tell me why the idle gets better as the engine oil temp rises when you use those lifters compared from changing from a stock lifter when everything ( like intake manifold heating) is the same???
So you think that lifter is moving so fast at 6000 rpm that not one bit of oil is going to leak from it as it's load conditions also go up?
Forget it, keep using the lifters.
"Some men, you just can't reach"
The Rhoads VMax are kinda a new thing, but far as Rhoads lifters go, I've always figured if you want to run a smaller cam, pick a smaller cam. They always seemed like a band aid for choosing a cam that's to big IMO.
In that test, what was the horse power increase at the lower rpm?
Ok, even IF you do loose a little top end with the rhaodes lifters, the engine will make more overall power (be able to do more work). Also, how often is a daily driven street engine going to see 6000 rpm?
Let's see if you understand this concept: the ability of an engine to do work is based on the "area under the curve". By increasing horsepower at lower rpm, the torque/horsepower curves are higher at lower rpm. The cumulative additional horsepower under the curve is now higher at lower rpm and increases the engine's ability to do work.
The ability of an engine to do work is the directly related to how fast it can move your car.
Still waiting for your answers for how many times per second the valve cycles at 900 rpm idle versus 6000 rpm. If you can handle the math.....
Bakerlite
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Well, when you consider the cam runs at half the crankshaft speed, then even a guy like you should be able to handle the maths for how many times the lifter or valve is cycled at 6000 RPM.. Or can you??
" the ability of an engine to do work is based on the "area under the curve". By increasing horsepower at lower rpm, the torque/horsepower curves are higher at lower rpm. The cumulative additional horsepower under the curve is now higher at lower rpm and increases the engine's ability to do work. "
Ha, where did you cut and paste that from LOL...Yeah I understand the concept. Most people are striving to increase the area under the curve, not reduce it. So there's another concept you don't understand even though you pasted it from somewhere else.
You may as well just go to a smaller cam that's better suited to your application. Would also be cheaper than the snake oil lifters.
I think I've wasted enough of my time on this and you. As I said, keep using those lifters, the advertising compels you too.
" the ability of an engine to do work is based on the "area under the curve". By increasing horsepower at lower rpm, the torque/horsepower curves are higher at lower rpm. The cumulative additional horsepower under the curve is now higher at lower rpm and increases the engine's ability to do work. "
Ha, where did you cut and paste that from LOL...Yeah I understand the concept. Most people are striving to increase the area under the curve, not reduce it. So there's another concept you don't understand even though you pasted it from somewhere else.
You may as well just go to a smaller cam that's better suited to your application. Would also be cheaper than the snake oil lifters.
I think I've wasted enough of my time on this and you. As I said, keep using those lifters, the advertising compels you too
.
I can do the math, I'm just testing to see how much you really know. It's a simple calculation that any high school math or physics student should be capable of figuring out.
Do you even know what "the area under the curve" means?
Let's just say that I've had a few "technical classes" in my day. I didn't need to "cut and paste" that, they are my own words.
Those of you that think you know everything are annoying to those of us who do...
Don't go away mad, just go away....
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