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What causes the piston ring groove clearance to widen in service?
As the piston moves up and down in the cylinder it also moves the piston rings up and down in the grooves. With the rings moving up and down it gradually increases the side clearence. Material is taken off from both the piston groove and the ring.
Is the piston skirt the portion that is cut out on one side or is that the piston crown?
Piston crown is the top, skirt is the side below the ring lands (ring grooves). The as you say, the skirt often has cut aways to clear the counterwieghts on the crankshaft.
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.
Where do the piston rings line up on the piston of a 1999 blaster?
There should be a arrow on top of the piston close to the pistons edge. Your top ring's gap should be on same side as arrow. Then alternate next ring 180 degrees from last gap. The arrow should facing forward when installed into the jug.
Why won't my car start there is a knocking sound on left side when I try to start it?
the knocking is a broken piston rod or piston ring broke it will be from $550-$1k to have it replaced. u need to have it checked out ASAP
How do you install a piston?
Most pistons are attached to the connecting rod with piston pin. These are either pressed into the side of the pistion using a hydaulic press or held in with clips. (Or both) You can compress the piston rings to fit in the cylinders by hand, or with a special ring compressor. I would suggest that someone who has done it before helps you.
Where is the piston 1 on the Ford Freestar?
I was told the number 1 piston is at the back side of the motor closet to the passenger side.
Why your 302 smokes out one side?
The smoking out one side and not the other is a bad piston ring, a blown head gasket or cracked head it can be one or the other. If the smoke is blue its a bad ring or valve, if the smoke is white its a blown head gasket or a cracked head. Hope this helps you. D.
Why is the breather side of the valve cover keep blowing smoke on your 1986 Chevy caprice?
That is because the compression ring on the piston/pistons are bad and need to be replaced. Time for engine overhaul.
Where is the number 1 piston located on a 1973 volkswagen beetle?
Driver side, front piston.
What Parts in an engine?
piston pin, piston rings, side bearings, connecting rod bearings
How do you compress rear calipers on a 1995 Maxima?
If they are the same as a 97 Maxima then you twist them, don't compress them. To compress the piston you do it with a 'Disk Brake Piston Tool'. You can get this at Pep Boys for $12. To compress the piston on the passenger side you turn the piston clockwise. To compress the piston on the driver side you turn the piston counter-clockwise. Be careful trying to turn the piston using pliers or some other tool as you may tear the rubber seal around the piston.
