Polished Exhaust Muffler

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Polished Exhaust Muffler
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Want to get extra power from your engine? If you answered yes to that question, there's no better way to achieve this than to increase the airflow through your cylinder heads. Anyone - newcomer and veteran, who has been in the engine business will surely agree that a good flowing set of cylinder heads is the best way to increase horsepower in almost any engine.

How far you will you need to go with cylinder head porting? That largely depends on exactly what you're trying to accomplish and how you plan to use the vehicle.

So what exactly is this process known as 'port and polish'? Here's a simple definition -it is known as the process of removing the excess material found in the intake and exhaust ports along with the combustion chambers in order to enhance the air flow in and out of your engines combustion chambers.

Porting Your Cylinder Heads-DEFINED

This is the process when you carefully grind away the excess and unnecessary material to smooth the flow paths in your engine's intake and exhaust ports. Get this - every protruding point...no matter how unimportant it may seem, in that path will restrict and inhibit the flow of air, which causes your engine to work harder may it be by taking the air and fuel mixture in or pushing out the exhaust gases. By removing the obstructions and straightening out the air flow path, you will enable your engine to ingest and expel air more efficiently.

Polishing Your Cylinder Heads- DEFINED

As for polishing, well, it's just that. Polishing the surface of the combustion chambers will help reduce carbon buildup and reduce "hot spots". As for polishing the ports there's no need for a smooth finish here, all that's needed is to flatten the surface down with a 40 to 80 grit sanding roll. The end result being a slightly rough finish. A smooth finish will create more drag in the ports.

The end result - A significant increase in horsepower and torque.

A Very Important Reminder For First Timers. I think this is a good time to point out that for newcomers in the P&P game - go get an old junk head to practice on. Now I'm not saying that you can't use an new one. However, these would cost you a lot of money! And you don't want to make a mistake on a brand new head.

After practicing 'Port And Polish' with a couple of junk cylinder heads, you will learn how to and how NOT to manipulate the tools and the cylinder head, and when you are comfortable with your work you can move on to a P&P project where you'll be experienced enough to perform this work on the heads of your choice, a good used set or a new set of heads.

This job can be somewhat dangerous and you will be subject to a lot of flying debris so be sure to use the proper safety equipment, safety glasses or face shield, dust mask etc.

This job also requires the proper tools. A simple internet search for ' Head Porting Tools ' should get you everything you need. Have fun.

For more information and ideas on port and polish work visit http://www.squidoo.com/How-To-Port-Cylinder-Heads

2006 Aston Martin V8 Vantage N24

The 2006 Aston Martin V8 Vantage N24 racecar was designed subsequently in 2005 as a stock car, and it has its foundations firmly on the critically acclaimed V8 Vantage road car. The car was named after the "Nürburgring 24-hour race", which it has done very well in a couple of times, and it is one of the most exacting and assiduous racing circuits in the world. The N24 is only constructed toward European specifications, and it was given a multitude of alterations, upgrades, and changes to make it on the same plane as any other car in competitive racing. The car was only produced as a limited production vehicle, and only built by hand, which is the Aston Martin stamp of extensive fine craftsmanship.

The V8 Vantage N24's entire interior has been outfitted for optimum racing design, as little is left within the interior of the car. Items removed are all typical interior adornments e.g. airbags, air condition, embellishments, and seats. The facia molding is kept and is adjusted into Alcantara, plus a "Recaro Pole Position" competition seat is added to the car, with a passenger seat as an option, and a quick release steering wheel is fitted with suede trimmings, which is added as standard. All the interior coverings including the doors are substituted for the new "Twintex" lightweight mouldings. Also the interior has an FIA certified, complete high strength, steel roll cage measuring 40 x 15mm.

The body of the N24 is made up of lightweight aluminum side stripes, and redone side sills with a visible carbon fibre rib. The N24 also has a tail safety latch with the hinges are being kept; a quick release hood; a Motorsport towing eye fastened onto the chassis; polycarbonated side and rear windows with a slide opening for the driver; and there are preparation openings for tapping plates which serves use of pneumatic jacks. The specifications of the body are a width of 1865mm (73.5in); a front track of 1580mm (62.2in); a rear track 1590mm (62.6in); a wheelbase of 2600mm (102.5in); a height of 1210mm (47.5in); a length of 4380mm (172.5in); and a weight of 1330kgs, 250kgs lighter than a normal car.

The N24's engine is a 4.3 litre V8 has been changed to fortify throttle performance and replication by lightening and balancing the flywheel, the connecting rods, the pistons, and the crankshaft. The cylinder heads are redone by all the exhaust and inlet ports, which have been smoothed to advance the overall compression ratio. Also the engine regulator system was recalibrated for improved gas flow. The N24 also has a open flowing exhaust system with "ITG cylindrical foam air filters", and a lightweight rear muffler minus any skirt valves. The V8 Vantage's dry sump lubrication method is retained in order to assist with oil spillage while extreme cornering. The overall effect equated to a maximum horsepower of 410bhp (305kW) at 7500rpm, which is a 30bhp growth over the V8 Vantage, and a maximum torque of 425Nm (313lb-ft).

The transmission of the N24 is the traditional six speed manual, equipped with a "breather catch tank", along with a "Valeo twin-plate cerametallic clutch" (215mm) with a lightweight flywheel, entirely to powertrain formula. The V8 Vantage's highly polished suspension received minor changes for the N24's track use e.g. bigger front and back anti roll bars; "Bilstein Suspensions flexible ride height aluminum dampers"; solitary rate, flat ground, 2.5in "ID Eibach" springs with separate aiding springs; and the front sub-frame being modernized for more castor and camber. The wheels include front and rear "Speedline 10 x 18in, ET45mm cast magnesium", with "Yokohama A048-R" tyres, and "Pagid RS 29" racing brake pads.

The 2006 V8 Vantage N24 is developed on Aston martin traditions, has proven itself time and time again as a factory manufactured car that ready to take on any race. The level of fine details on a racing car conforms to the typical standards set so long ago, and has set its on rules for racing while carrying on the "Vantage" name.

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How to increase exhaust flow?

I have a 1997 VW Jetta and I would like to increase exhaust flow. This is my plan. I want to polish the exhaust manifold and take off the header muffler, then remove the resonator, then replace the stock muffler with a cherry bomb glass pack. Is there a header muffler and a resonator on this Jetta? If so, will doing that increase horsepower?

Rather than trying to polish the stock exhaust manifold, I'd just put on new header instead. That is where you would pick up the most power.

1992 Chevrolet Lumina z34 from North America - Comments
I have a 91 Z34. Arctic white with no rust anywhere. Rare for New England. These cars are fast and agile. She's put down some pretty stout cars both on the highway and back roads.

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