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Author
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Topic: Intake porting
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V8 Thumper
Gearhead Posts: 4652
From: Phoenix, Arizona
Registered: Dec 2001
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posted 07-04-2005 12:41 AM
   
Not to hog the thing out, just to match the transition from the runners to the ports; how far up the runners should I go with the burr? ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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V8 Thumper
Gearhead Posts: 4652
From: Phoenix, Arizona
Registered: Dec 2001
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posted 07-04-2005 07:06 PM
Anyone? Beuler?  I'm thinking .400-.500 up the runner to ease the transition... sound good? ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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kid vishus
Gearhead Posts: 6405
From: middle of NC
Registered: Oct 2000
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posted 07-04-2005 07:27 PM
That should work. I used to know more about this, but one thing I do remember is, the ideal intake runner is 1/8" smaller than the port in the head (and that came from a 'how to article' written in conjunction with the main man from Wilson.)
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Dubz
Gearhead Posts: 1890
From: Manitoba Canada
Registered: Oct 2002
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posted 07-04-2005 07:35 PM
quote:
Originally posted by kid vishus:
That should work. I used to know more about this, but one thing I do remember is, the ideal intake runner is 1/8" smaller than the port in the head (and that came from a 'how to article' written in conjunction with the main man from Wilson.)
any guesses as to why that is?
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kid vishus
Gearhead Posts: 6405
From: middle of NC
Registered: Oct 2000
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posted 07-04-2005 08:29 PM
If I remember correctly, it had something to do with velocity entering the port. Anymore that that and it would create turbulence, any less and it wouldn't have any effect.I sure wish I still had those articles. 
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