Porting and polishing tools

With a very versatile selection of tools, the SR kit can also be used to modify 2 strokes above cc and 2 strokes as small as 30 cc of displacement. This kit give you all the equipment of the very popular 10 Kit, but with a AMC as the Right angle for 2 stroke transfer ports. Plus the SR kit costs less than the 10 Kit! The AMC has sealed bearings and smaller head than most right angle porting tools. This allows the AMC to still be used in larger displacement 2 strokes, but small enough to be used in 2 stroke cylinders of only 30 cc.

Everything you need to get started Porting and Polishing 2 stroke cylinders. This is TJ's new recommended kit for porting modern Scooters, chainsaws, MX bikes, fourwheelers, quads, snowmobiles, dirt bikes, Karts, streetbikes and just about everything else in the 2 stroke cc to 30 cc range. For more shipping, payment, or ordering options simply email this product to ccspecialtytool yahoo. We also accept Visa and MasterCard! New SR Kit! Smooth out the edges of the port once the material is removed with increasingly higher grit polishing pads and cones.

Smooth the edges of the opening into the manifold to give the air a smooth, progressive passage. Inspect the insides of the intake tracts for casting marks and rough areas. Remove the casting marks and smooth out the bends where the manifold changes direction with a rough cutting stone on the die grinder. This will promote air flow through the manifold as it moves to the engine.

Polish the inside of the intake manifold with increasingly finer polishing cones. Finish the polishing with grit sandpaper. NOTE: Do not polish the intake tracts until they are completely smooth, since this will inhibit fuel atomization. Reinstall the intake manifold in the reverse of removal. Start the car and check for leaks between the manifold and the engine. Porting the Heads and Intake Manifold. Combination wrench set 2. Spray marking ink 3.

Engine gaskets Intake manifold and exhausts 4. Die Grinder or Dremel with stones and sanding drums 5. Small cleaning brush 6. Detergent 7. Water 8. Bolt the intake manifold and exhaust header to the head. Spray ink into the intake manifold so that it will mark the overlapping area on the head. Be careful not to spray too heavily, which could cause runs.

Turn the head over and spray ink into the exhaust valve pockets to mark any overlapping sections of the header flange. Remove the header and intake manifold. Be careful not to smudge the ink on the intake mounting surface. Install a sanding drum in the die grinder and grind away any inked areas in the exhaust header ports. Gently smooth and round the transition into the ports. Be careful not to grind through the walls of the tubing. Install a stone in the grinder and grind away the marked inked area in the intake ports of the head.

Don't grind too deep, leave the last bit of material for the sanding drum. Install a sanding drum in the grinder and finish matching the intake ports. Keep a straight angle into the port; do not allow any hollows to form.

Turn the head so that the combustion chambers face up. Install a round stone in the grinder and smooth the valve pockets without changing their basic shape. Grind down parting lines and casting flash, and make a smooth transition from the port passage to the valve seat. Be careful not to touch the valve seat or valve guide with the stone. Do not try to make a mirror finish; just eliminate the most obvious roughness.

Clean the ports, valve seats and guides with the brush, detergent and hot water. Allow to dry, and oil to prevent rusting if the heads of not aluminum. Put an old exhaust manifold or header gasket on each cylinder head and hold it in place with two bolts. Spray ink over the gasket at the exhaust holes. Remove the gasket s.

Grind the inked material away with the die grinder and carbide bit until the ink is gone. Smooth all ports with the die grinder and a polishing bit. Put your cylinder heads in the parts washer and scrub them vigorously. Let the solvent flow over them while scrubbing to wash away any metal filings. Put the old exhaust manifold or header gasket on each header or exhaust manifold and hold it in place with two bolts. Put your manifold or headers in the parts washer and scrub them vigorously.

This process matches the exhaust ports of your engine heads to your exhaust manifolds. People constantly pay s for bigger bore systems that, without porting, create problems they do NOT want. Installers ignore the problem, don't do this all important work and the car is degrade d. Engine power is also about smooth flow of gases in and gases out. Owners fixate on the bling of shiny stainless pipes, especially their pretty branch manifolds, which discolour almost instantly with usage.

They forget that the major reason to spend so much money was to improve flow, not shininess. They then buy exhaust manifolds that are of a different size.