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Head Porting For The Do It Yourselfer

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Old Nov 28, 2015 | 12:46 PM
  #11  
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Here's a detailed article with lots of good info.

http://www.austincc.edu/wkibbe/porting.pdf
 
Old Nov 28, 2015 | 03:00 PM
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Holy necro-bump!!!
 
Old Nov 28, 2015 | 03:52 PM
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Originally Posted by JustDave13
What's the most common mistake?
Doing it yourself and not leaving it to the pros. Much more than creating a direct shot to the port required like velocity, valve size, valve job, port matching intake, etc. etc.
 
Old Nov 28, 2015 | 07:11 PM
  #14  
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Originally Posted by djl
Doing it yourself and not leaving it to the pros. Much more than creating a direct shot to the port required like velocity, valve size, valve job, port matching intake, etc. etc.
You know what the difference is between an amateur and a pro?




...




...




...



A pro gets paid to screw it up.
 

Last edited by JustDave13; Nov 28, 2015 at 07:21 PM.
Old Nov 28, 2015 | 07:30 PM
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Originally Posted by JustDave13
You know what the difference is between an amateur and a pro?
A pro gets paid to screw it up.

Back when we owned a bike shop, we shared our building with a performance shop that both hand ported and CNC ported heads depending upon the application. Believe me, its a learned art. (I don't believe any of those guys did it right their first time either.)

 
Old Nov 28, 2015 | 07:46 PM
  #16  
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Originally Posted by Stiggy
Back when we owned a bike shop, we shared our building with a performance shop that both hand ported and CNC ported heads depending upon the application. Believe me, its a learned art. (I don't believe any of those guys did it right their first time either.)
That's what it sounds like, a learned art.

Back in the 80s Hot Bike magazine had a really informative article on porting and polishing, they got right down to the nuts and bolts of the objective.
I was tempted to port and polish my 89 FXR but never got around to it.
If I hang on to my Softail long enough I may do it in about 4-6 years, that's when I anticipate going into motor.
 
Old Nov 29, 2015 | 10:11 AM
  #17  
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Originally Posted by JustDave13
You know what the difference is between an amateur and a pro? A pro gets paid to screw it up.
Well, I think there are a couple of "pro" forum sponsors that might take exception to that remark.
 
Old Nov 29, 2015 | 02:28 PM
  #18  
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Originally Posted by djl
Well, I think there are a couple of "pro" forum sponsors that might take exception to that remark.
I'm sure they've made their fair share of mistakes too, everybody has to start somewhere.
I've worked 30 years in the auto repair business, I've seen it all when it comes to this stuff.

The trick for those who want to do things on their own is simple. Take your time and pay attention.
 

Last edited by JustDave13; Nov 29, 2015 at 02:31 PM.
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Old Nov 29, 2015 | 03:30 PM
  #19  
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Originally Posted by JustDave13
I'm sure they've made their fair share of mistakes too, everybody has to start somewhere.
I've worked 30 years in the auto repair business, I've seen it all when it comes to this stuff.

The trick for those who want to do things on their own is simple. Take your time and pay attention.
I know everybody has to start somewhere, that's not my point; it's where one ends up that I was making reference to. Good luck with your endeavors; should be an interesting journey.
 
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