Porting cylinder heads
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Another type comes as a liquid in an alchol base that can be sprayed or wiped on. When the alcohol evaporates, the dye is left behind for scribing. | Another type comes as a liquid in an alchol base that can be sprayed or wiped on. When the alcohol evaporates, the dye is left behind for scribing. | ||
| − | == Porting methods == | + | ==Porting methods== |
===CNC machining=== | ===CNC machining=== | ||
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===Hand porting and polishing=== | ===Hand porting and polishing=== | ||
| − | == Step by step porting methods == | + | ==Step by step porting methods== |
Before you go out and grab your tools and start grinding on those $1000 Edelbrock heads you just bought, STOP. Porting requires practice, so do exactly that, practice on a set of old nondescript heads that you picked up at the local auto recycler. Try out your tools and see what they do. Remember to use the correct tool for cast and aluminum heads so you do not ruin the tool and hurt yourself. After you feel confident with working with your tools, we will go on to explaining what we want to accomplish in each segment. | Before you go out and grab your tools and start grinding on those $1000 Edelbrock heads you just bought, STOP. Porting requires practice, so do exactly that, practice on a set of old nondescript heads that you picked up at the local auto recycler. Try out your tools and see what they do. Remember to use the correct tool for cast and aluminum heads so you do not ruin the tool and hurt yourself. After you feel confident with working with your tools, we will go on to explaining what we want to accomplish in each segment. | ||
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|[[File:Intake_Edelbrock.jpg|thumb|left|400px]] | |[[File:Intake_Edelbrock.jpg|thumb|left|400px]] | ||
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| + | ==Milling the deck== | ||
| + | When the decks of the block or heads are milled to raise compression, or to true the surfaces, or to correct the [http://www.crankshaftcoalition.com/wiki/Quench '''quench measurement'''], often the ends of the intake and/or the intake flanges need to be milled to correct the port and bolt hole misalignment this can cause. Whether this is necessary depends on the amount of material removed and the angles involved. In the case of the Chrysler B/RB and Pontiac engines, nothing needs to be removed from the ends. | ||
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| + | It should be taken into consideration that when the heads are milled, the geometry changes and piston to valve clearances will be closer. | ||
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| + | See [['''Milling cylinder heads''']] for more info. | ||
==References== | ==References== | ||
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*A more technical approach: [http://hubpages.com/hub/Cylinder-Head-Porting-101 Cylinder Head Porting 101] | *A more technical approach: [http://hubpages.com/hub/Cylinder-Head-Porting-101 Cylinder Head Porting 101] | ||
*A great article on valve shrouding: [http://www.diyporting.com/Shrouding.html Valve Shrouding] from diyPorting.com | *A great article on valve shrouding: [http://www.diyporting.com/Shrouding.html Valve Shrouding] from diyPorting.com | ||
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| + | {{newarticle1}} | ||
[[Category:Engine]] | [[Category:Engine]] | ||
[[Category:Cylinder head]] | [[Category:Cylinder head]] | ||
[[Category:Undeveloped articles]] | [[Category:Undeveloped articles]] | ||
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