K&n ?
Thread Starter
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Member
Joined: Aug 2010
Posts: 73
Likes: 0
From: San Diego
I don't know jack crap about engines, but I know quite a bit about mathematics and physics. From a physics perspective, it's a no brainer. Think of it this way. What do you think would happen if you performed the inverse of the GOTTS mod? What if you capped the intake and only allowed a 1" diameter opening? Your truck would probably develop asthma!
Senior Member
Joined: Jul 2004
Posts: 6,200
Likes: 39
From: Easton, Pa.
Ya, ok!
Here is some math based info I just happen to know, for you to consider.
As an example, a Ford 5L (302 cu/in) push rod motor at 5000 rpm cannot injest more than about 500 cfm of air MINUS the losses in the intake tract and usually a bit less.
Do you think for one minute the factory engineers would outfit any motor with a stock air intake filter system that flows less than the stock motor can consume within it's (rated) operating RPM on these modern fuel injected engine, and limit power when in competition for sales with other makes?
And yes before it's brought up, the old carbed engines were limited very much by a 2 barrel intake and carburator as far as total airflow but this in not the case now.
The stock air intake flows all that the motor can use in stock form and use.
Remember this motor is only 282 cu/ in (4.6L) and cannot aford to lose power to a restricted air intake as used in it's normal application.
Now you do whatever makes you happy.
So don't try to throw math and physics at me. I already know about it.
You need to plug in some numbers and see for yourself.
Just because the intake nose is necked down does not mean it won't flow all the air needed.
You know very well the air velocity increases and compresses thru the venturi that is formed with very little additionl losses. And were not to be silly talking about 1" holes.
Good luck.
No further response in this thread, from me.
Here is some math based info I just happen to know, for you to consider.
As an example, a Ford 5L (302 cu/in) push rod motor at 5000 rpm cannot injest more than about 500 cfm of air MINUS the losses in the intake tract and usually a bit less.
Do you think for one minute the factory engineers would outfit any motor with a stock air intake filter system that flows less than the stock motor can consume within it's (rated) operating RPM on these modern fuel injected engine, and limit power when in competition for sales with other makes?
And yes before it's brought up, the old carbed engines were limited very much by a 2 barrel intake and carburator as far as total airflow but this in not the case now.
The stock air intake flows all that the motor can use in stock form and use.
Remember this motor is only 282 cu/ in (4.6L) and cannot aford to lose power to a restricted air intake as used in it's normal application.
Now you do whatever makes you happy.
So don't try to throw math and physics at me. I already know about it.
You need to plug in some numbers and see for yourself.
Just because the intake nose is necked down does not mean it won't flow all the air needed.
You know very well the air velocity increases and compresses thru the venturi that is formed with very little additionl losses. And were not to be silly talking about 1" holes.
Good luck.
No further response in this thread, from me.
Technical Article Contributor
Joined: Oct 2005
Posts: 25,641
Likes: 19
From: MI
I don't know jack crap about engines, but I know quite a bit about mathematics and physics. From a physics perspective, it's a no brainer. Think of it this way. What do you think would happen if you performed the inverse of the GOTTS mod? What if you capped the intake and only allowed a 1" diameter opening? Your truck would probably develop asthma!
.... 
Thread Starter
|
Member
Joined: Aug 2010
Posts: 73
Likes: 0
From: San Diego
Ya, ok!
Here is some math based info I just happen to know, for you to consider.
As an example, a Ford 5L (302 cu/in) push rod motor at 5000 rpm cannot injest more than about 500 cfm of air MINUS the losses in the intake tract and usually a bit less.
Do you think for one minute the factory engineers would outfit any motor with a stock air intake filter system that flows less than the stock motor can consume within it's (rated) operating RPM on these modern fuel injected engine, and limit power when in competition for sales with other makes?
And yes before it's brought up, the old carbed engines were limited very much by a 2 barrel intake and carburator as far as total airflow but this in not the case now.
The stock air intake flows all that the motor can use in stock form and use.
Remember this motor is only 282 cu/ in (4.6L) and cannot aford to lose power to a restricted air intake as used in it's normal application.
Now you do whatever makes you happy.
So don't try to throw math and physics at me. I already know about it.
You need to plug in some numbers and see for yourself.
Just because the intake nose is necked down does not mean it won't flow all the air needed.
You know very well the air velocity increases and compresses thru the venturi that is formed with very little additionl losses. And were not to be silly talking about 1" holes.
Good luck.
No further response in this thread, from me.
Here is some math based info I just happen to know, for you to consider.
As an example, a Ford 5L (302 cu/in) push rod motor at 5000 rpm cannot injest more than about 500 cfm of air MINUS the losses in the intake tract and usually a bit less.
Do you think for one minute the factory engineers would outfit any motor with a stock air intake filter system that flows less than the stock motor can consume within it's (rated) operating RPM on these modern fuel injected engine, and limit power when in competition for sales with other makes?
And yes before it's brought up, the old carbed engines were limited very much by a 2 barrel intake and carburator as far as total airflow but this in not the case now.
The stock air intake flows all that the motor can use in stock form and use.
Remember this motor is only 282 cu/ in (4.6L) and cannot aford to lose power to a restricted air intake as used in it's normal application.
Now you do whatever makes you happy.
So don't try to throw math and physics at me. I already know about it.
You need to plug in some numbers and see for yourself.
Just because the intake nose is necked down does not mean it won't flow all the air needed.
You know very well the air velocity increases and compresses thru the venturi that is formed with very little additionl losses. And were not to be silly talking about 1" holes.
Good luck.
No further response in this thread, from me.
Senior Member
Joined: Jun 2007
Posts: 5,522
Likes: 6
From: Utah
I did the Gotts mod and I like the extra noise sounds better I think. Got rid of the K&N filter the rubber gasket failed and after all I've read about them decided the paper filter is good. I do have a K&N on my Mach I, I plan on keeping. Its the one that the top of the filter is a filter and I like it. I just dont clean it very often because I've read they work better a little dirty. I think thats the biggest problem with the K&N the guys who use buy them tend to over maintenance. The K&N is designed to go 50,000 miles without cleaning and allot of guys clean them every 6 months. To clean to much oil and all.. My kid bought one for his Dodge and I saw it when he was in town last week. 6 months old and he has already cleaned it. He was complaining about the Mach I's filter looking dirty. It's been on there for over 5 years and I've never cleaned it.