0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
How do you check the engine pistons of a 1998 Saturn SL1?
The only way to "check" a piston would be to remove it and visually inspect for damage and wear.Make certain that the piston is not cracked or otherwise damaged.check the ring grooves. Use a piston ring and a set of feeler gauges to determine the amount of wear. Excessive ring groove wear can result in piston failure and if the piston shatters, it can cause the engine to fail completely.Next, use a micrometer to determine the difference in the diameter of the piston between the top and bottom. The piston will wear and if the difference between the top and bottom is too great, the engine will exhibit "piston slap".Check the fit of the wrist pin, it should be tight.HOWEVERYou can run a compression test and get a good idea whether the piston is functioning somewhat correctly.
What is the function of a piston ring in a compressor?
Prevents wear on the pistin and reduces compression loss
What has the author Donel Rudolph Olson written?
Donel Rudolph Olson has written: 'The effect of detonation on piston ring wear' -- subject(s): Combustion, Mechanical wear, Piston rings
Why you measure the compression pressure?
to check the piston rings and the valve seals for wear.
What is a piston ridge?
Most people confuse ring ridge with piston ridge. The piston is wrapped in several rings which seal the combustion gases above the piston. These are made of a very hard material (usually cast steel). As the piston goes up and down they ride against the wall of the combustion chamber and wear it away. The part of the cylinder wall above where they reach that does not wear, resulting in a raised ridge. This MUST be removed when new rings are installed, as the old ring has also worn down, The new one will smash into the ridge and, being a hard brittle material, may break up, leaning jagged pieces of cast steel trapped between the piston and wall to tear grooves in both and ruin the engine. The rings fit tightly into the piston grooves, but there is some slack. The edges of the groove must match the angle between the wear surface of the rings and the top/bottom, so the rings are supported across their full width and circumference. It looks like 90 degrees, but usually it is a little less, so the pressure of the moving piston forces the rings outward into the chamber wall, to improve the seal. Every time the piston reverses direction the rings hit the edges of the groove. Over time this pushes up ridges in the softer metal of the piston above and below the groove. These are piston ridges. They are cause no problem as the piston is a softer metal than either the rings or chamber wall. If they are high enough, they will show as bright bands above or below the ring grooves in the pistons. If they piston rides are more than a few thousandths wide, the grove may be over sized enough that the piston should be replaced, as the walls of the groove no longer support the ring properly. I have never seen piston ridges on a motor with under a hundred and fifty thousand miles, except for K-Cars and some of the little Chevy's from the seventies. The cause there was not mileage, but less than ideal metal in the pistons.
Where does maximum cylinder bore wear normally occur and why?
most cylinder wear occurs at the top fo the ring travel. Pressure on the top ring is at a peak and lubrication at a minimum when the piston is at the top of its stroke
What is the purpose of the grooves on a car piston?
Not sure what you mean by 'grooves' but if you're talking about the ring grooves circumferentially around the sides of the piston, they are intended to locate and position the rings. Rings are the devices that attempt to form a seal around the piston and cylinder to contain the pressure generated by combustion. Since the size of the piston as well as the cylinder changes with changes in temperature the seal must be of a variable circumference. It must also be able to change as it moves up and down the cylinder which will vary in circumference from top to bottom (machining is not perfect and wear changes circumference as well). The ring is elastic and expands/contracts into and out of the ring groove to accommodate these differences in circumference from one part of the cylinder to another.
How do you rebuild a cr500 motor?
Two stroke engines are very easy to rebuild. The transmission component is not. The typical rebuild of a two stroke engine consists of removing the cylinder and replacing parts on the piston assembly. Before you order any parts, inspect the cylinder wall for wear and marking. If the cylinder is damaged you will need to get it machined and then order an oversized piston and ring to go with it. If its not damaged, order a standard (or performace) top end rebuild kit wich comes with a piston, piston ring, piston pin, piston pin bearing, and gaskets. So, for your standard rebuild of the top end you would remove one of the snap rings on either side of the piston pin. This will allow you to push the piston pin out from the opposite side. Once the pin is out the piston will come off the connecting rod. Take note of the piston orientation for assembly. The piston pin bearing will now be accessable (you will find on the connecting rod where the piston pin attached the piston). Minor assembly of the piston prior to installation makes it a bit easier to assemble. Place the piston ring on the piston and align the gap with the small pin you will see in the ring groove (turn the piston ring until it falls into place). Install 1 of the snap rings in the piston where the piston pin slides through it. The piston is now prepped for installation. Place the new piston pin bearing in the connecting rod with some assembly grease to hold it. Place the new piston onto the connecting rod so the hole in the piston matches the hole on the connecting rod. Slide the piston pin through the piston, connecting rod, and into the other side of the piston until it contacts the snap ring you installed earlier. Install the last snap ring into the piston to hold the pin in place, cover the outsides of the piston in assembly grease and lower the cylinder onto the piston. If you don't have a piston ring compressor you can hold the piston ring tight to the piston with your fingers. If you encounter any resistance when your putting on the cylinder you can LIGHTLY press the piston ring into the piston with a small slot-head screwdriver. Once that is together you should look up the torque specs for your make/model or if your not that picky just tighten them up at your discretion. If your looking to do anything on the bottom end of the motor or in the transmission I would HIGHLY recommend getting it done at a shop. Unless you know what you are doing you will have a puzzle of gears and springs to put back together.
What size small finger ring would a 6'5 man wear?
You would need to measure the finger for ring size.
What has the author Dale Lawrence McLellan written?
Dale Lawrence McLellan has written: 'The application of statistical techniques to piston ring wear as influenced by gasoline additives and jacket temperature' -- subject(s): Piston rings
What is alfin piston?
ALumnium Ferrous INsert PistonIt is a bi-metrallic piston, consisting of a body of aluminum alloy and a wear resistant cast iron inserted for the top grove. The top grove is fitted with a steel chrome in land ring. Which will give a enhanced piston life.
What would make a 1988 Nissan Sentra throw oil up into the breather and into the carb?
Engine "blow-by" excessive engine wear - bad piston ring
