What does porting an engine head do?

What does porting an engine head do?

Cylinder head porting refers to the process of modifying the intake and exhaust ports of an internal combustion engine to improve their air flow. Cylinder heads, as manufactured, are usually suboptimal for racing applications due to being designed for maximum durability.

Does porting cylinder heads make a difference?

Once power increases from other methods have been maxed-out to a point, head porting can be a great next step to producing another incremental power jump. Couple head porting with a performance camshaft with a nice high valve lift and there can be some serious potential for higher upper rev range power output.

Is porting and polishing worth it?

But for those of you who don’t know, porting and polishing your heads is beneficial for power and efficiency of the engine. In a lot of cases, because of the increased CFM of the heads, as much as 30 horsepower is typical with good port work.

How do I protect my valve seats when porting?

Use an old head gasket to protect the deck surface. Use the old ground down valves to allow access to the edges but still protect the valve seat. You want to blend the transitions to the valve seat and any of the valve unshrouding that you performed with the carbide burrs.

Should I port and polish my head?

What kind of porting does a cylinder head need?

Includes full porting and polishing of the inside of the intake manifold. As well as port matching. Stage III: See below for pricing Complements any head porting for maximum horsepower. Includes full porting and polishing of the inside of the intake manifold. As well as port matching.

How much does cylinder head and manifold porting services cost?

From basic “Hot-Rod” mild cylinder head porting for that street and strip machine to all out class competition machines where every horsepower matters, you’re in good hands with CFM Performance! Contact Us! Pricing is for traditional V-8 cylinder head pairs.

What kind of cutting bit do I need to Port a cylinder head?

Carbide cutting bits with different cutting flutes are available as well. In both cases, make sure you match your cutters or sanders to the head material you are porting. Another critical consideration exists when it comes to these primary material-removing tools, and that is reach.

Why are dimples used in cylinder head porting?

In a port, we are looking to create a situation where fuel stays off the wall of the port. So the dimples would (in theory) help create this boundary layer of air that would keep the fuel off the wall and in suspense and atomized. First off, more than likely you have an engine with modern fuel injection if your reading this.