Difference between intake and exhaust pushrods

  • Note that there is a big difference between the CJ and standard 429/460 Intake gaskets. A problem to watch out for is when you call the parts store (and even specify it must be a CJ gasket) they still often send the standard 429/460.
Steel is more heart resistant than aluminum. My guess is the steel one is the exhaust valve. Also fuel in has smaller volume than expanded exhaust out (the gas expansion is what pushes the pistons...

If you want to use a 351C intake, you can buy plates to make up the 1.100 space, and wider intakes are also available ready to go. Camshaft and valvetrain gear swaps over with no effort. 351C headers will work, they'll just be a bit higher in the engine bay.

When you compare the 2 exhaust ports you can see that the valve guide protrudes further into the port on the earlier heads. The valve guide height is between the yellow and green arrows (Picture 1). In the '05 heads, the valve guide doesn't block as much of the port. Compare the distance between the green and red arrows (Picture 1). Picture 1
  • Harley exhaust choices vary almost as much as those who ride. Drag pipes, slip-fit mufflers, 2-1, staggered duals, and the list goes on. An exhaust system is made for every bike, engine, style, and configuration imaginable. However, there is a big difference between performance and what looks “cool”.
  • Aug 25, 2012 · On the B series they're different part numbers - the only difference is exhaust is designed to handle higher temps. Some after market gasket companies just make exhaust style seals and get you to run them on the intake side.
  • These numbers are (1) intake opening BTDC, intake closing ABDC, (3) exhaust opening BBDC and (4) exhaust closing ATDC. For these numbers to have meaning, the lift at which the numbers are taken must be specified. Duration - the difference between the closing and opening angles. This is the number of degrees the valves are "off their seats".

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    Shop our huge parts diagram database, searchable by brand, model number, spec number, part number and save. If all you have is a serial number call us at 888-652-3990 or email us [email protected] and we would be glad to look it up fo you.

    Q: What's the difference between the F-body LT1 and that in the Corvette? A: The engines are exactly the same with the exception of the air intake and the exhaust. Also the Corvettes have two knock sensors and 4-bolt mains compared to 1 knock sensor and 2-bolt mains on the F-Bodies, respectively.

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    Note that there is a big difference between the CJ and standard 429/460 Intake gaskets. A problem to watch out for is when you call the parts store (and even specify it must be a CJ gasket) they still often send the standard 429/460.

    The exhaust valve(s) were driven by a camshaft, but were located in the engine block as per side-valve engines. The 1894 Diesel prototype engine used overhead poppet valves actuated by a camshaft, pushrods and rocker arms, therefore becoming one of the first OHV engines. In 1896, U.S. patent 563,140 was taken out by William F. Davis for an OHV ...

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    Feb 04, 2010 · Some aftermarket intakes have both styles or designs, while others, like Navarro, have most/all bases flat or level. Using a late-style tilted intake on an engine sitting level results in the carb(s) angled forward and looking somewhat odd; using an early intake on a '49-'53 car results in the carb(s) angled to the rear.

    and the pushrod converge if their alignment is extended upward, while the rocker shaft angle lies somewhere between those two. As we raise and lower the rocker arm on its shaft, we are also moving the roller rocker back and forth across the valve stem tip. Raising the rocker moves the roller toward the exhaust side of the

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    * Intake is 25-30% larger than exhaust. The bigger valve is the inlet valve and the smaller one is the exhaust valve. The spark plug lies between the two. * Difference between both is diameter.

    Harley exhaust choices vary almost as much as those who ride. Drag pipes, slip-fit mufflers, 2-1, staggered duals, and the list goes on. An exhaust system is made for every bike, engine, style, and configuration imaginable. However, there is a big difference between performance and what looks “cool”.

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    The wheel at the right of the picture is what the cam belt rides on. This wheel is attached to the cam itself. The cam, then actuates the rocker arms which you can see are pointing to either side of the head. This is an example of a 3-valve per cylinder head (2-intake and 1-exhaust per cylinder).

    Nov 06, 2014 · Between the pushrod V-8, wing windows, granny-geared manual transmission, solid axles holding 4.10:1 ring-and-pinions, super thick sheetmetal…oh, we could keep going, but we’ll spare you.

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    The exhaust valve remains closed through the intake and compression cycle and most of the power cycle and commences opening at the end of the power cycle and is open throughout the exhaust cycle. The intake valve is closed during the entire power and exhaust cycles.

    The exhaust valve(s) were driven by a camshaft, but were located in the engine block as per side-valve engines. The 1894 Diesel prototype engine used overhead poppet valves actuated by a camshaft, pushrods and rocker arms, therefore becoming one of the first OHV engines. In 1896, U.S. patent 563,140 was taken out by William F. Davis for an OHV ...

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    Balancer assemblies and shafts, camshafts and kits, timing gears, connecting rods, crankshafts, cylinder heads, intake & exhaust valves, flywheel parts and assemblies, governors, hand cranks, lifters, oil pans, oil pumps, pistons & sleeves, push rods, o-rings, ring gears, rocker arms, thrust washers, tappets - most engine parts can be found here.

    The LS6 shares its basic block architecture with the GM LS1 engine, but other changes were made to the design such as windows cast into the block between cylinders, improved main web strength and bay to bay breathing, an intake manifold and MAF-sensor with higher flow, a camshaft with higher lift and more duration, a higher compression ratio ...

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Therefore it should be 2.435 sq. in. for the intake ports and 1.502 sq. in. for the exhaust ports. The stock port c/s areas therefore need to be enlarged by 9.0% for the intake and 11.3% for the exhaust. The ports should be matched to the intake and exhaust manifold runners to smoothen airflow and prevent power-robbing turbulence.
Generally, one of the camshafts handles the intake valves, while the second one handles the exhaust valves. The 4-valve per cylinder setup allows for better breathing for the engine, and better performance in most cases, making DOHC a choice for engines that need to rev higher.
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