Question about 1982 kawasaki Csr 1000

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I have one kawasaki z 1000 st, and I want to change the ring set of the piston, I recived by ebay this ring set from germany by S M , in the box noted 1,2 x1,2x2,50 and 70,50 : I don't understend because I can't put it in the cylindre because it's biger, my moto is the first time I open the engin, what I can do with this ring set and I think you verry much.

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Here is the deal; Assuming the rings that were sent to you are the correct thickness for the piston ring grooves but were actually made for a 1st, 2nd or 3rd oversize piston, they may still be able to be used. Put a single ring into the cylinder. There should be an end gap of about .025 in the ring. If not, you can carefully grind the end of the ring by using a bench grinder or a rotary grinder. File off any rough edges. Re-fit in the cylinder and check the end gap. If you do not have a thickness guage, .025 is about the thickness of a paper matchstick. Once all rings have been fitted for cylinder size, mount them on the piston and put the bike back together. Please rate my answer. Thanks.

Posted on Aug 21, 2010


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Yes, the problem is linked to compression getting past the rings. The pressure goes to the gearbox then some oil gets carried out of the box along with the compression. Too much oil in the gearbox makes the problem even worse. You shouldn't need pistons. Chances are the rings are just stuck in the piston ring grooves. Sometimes they can be freed up by the mechanic manipulating them. Often they break when manipulated. It all depends on how badly they are stuck. If a piston is badly scored it needs to be replaced. The scoring can stop the rings from sealing the cylinder. Do this; drain the oil then fill the box to the proper level. Wash the bike to rid it of previous oil spills. Now see if the problem returns after the washing. If the rings are stuck , the bike should be smoking as you start and ride it. Chances are that only the rings will need to be replaced. Any chance you can be there as the mechanic takes the cylinder off? A dishonest shop could bring you a badly scored piston and rings and say they came from your bike when in reality they came from another bike. They free up your rings and charge for new pistons and new rings as if they actually put them in.

Jul 27, 2011 | 2006 kawasaki KX 450 F

1 Answer

I have a 98 kmx125.. my prob is where to get geniune parts???? piston, piston ring, piston pin and connecting rod???

Most major manufacturers supply manuals online so if you were to log on to the manufacturer's web site, you may be pleasantly surprised as usually, if available, one is able to download, by model number, Dealer Network for spare part supplies as required.

The information is normally free of charge.

Try ebay

I hope this helps.

Mar 01, 2011 | 2000 kawasaki KMX 125

1 Answer

Hi! I bought a Kawasaki gpx 750r 1989. It was not used since 1997. I wonder, should i change the piston rings?or any other mechanical part?except for fluids an so...thanks :)

No, their would be no reason to change the piston and rings first up, unless you know that they are worn from the previous owner, Get the bike up and running first and go from their, will be a good chance the piston and rings will be fine.

Change the oil first up as their is a good chance condensation has occurred and put water in to the oil. Drain the fuel from both the tank and carburettor, as this would have gone stale. Change battery or jump start if required.

suspect. With the spark plugs out, crank the engine over a few times. (ensure oil level correct) If it winds over all good, put a few drops off oil in the cylinders. This will help build compression. Re-fit spark plugs, Full choke and give it a shot. Away it should go! Aerostart or ether may come in handy.


Jan 23, 2011 | 1989 kawasaki GPX 750 R

2 Answers

Why would clip holding gudgon pin in on piston come out and make a bit of a mess after 70 hrs use kx 85 08

Unfortunately it is never possible to find out the cause, it is not very common, but does happen. For this reason when doing work on the piston it is recommended to always use new circlips.
Even then it may be the installers fault, or a damaged clip, or the groove in the piston not machined exactly.

May 25, 2010 | 2003 kawasaki KX 125

1 Answer

Kawasaki kdx 125 plugs oil up and bike stalls

I think you have worn internal engine parts. To much oil is getting past the piston rings. Try installing new piston rings and honing the cylinder walls.

May 23, 2010 | kawasaki Full Suspension Mountain Bike Men

1 Answer

Kx500 head stuck on

Is the bike locked up? Did the piston melt into the cylinder head?

If so you need to free up the piston to release the cylinder head.

You could try a little penetrating oil on the piston ring area and some heat. Then a wood stake and a mallet with a couple solid hits might unstick the rings.

Of course, after that...the head, rings and probably the piston are all gonna be scrap! Which they are anyway if the melted together right?

This is a link to your bikes online parts list from Kawasaki. You can at least get part numbers for replacements if needed.

Good luck and be careful!

Feb 08, 2010 | 2003 kawasaki KX 500

1 Answer

Kawasaki ZZR 250. Engine hydrauliced after fuel

sounds like you blew a set of piston rings. instead of building compression in the cylinder its pressurizing your crank case forceing the oil out the breather into your air box

Dec 18, 2009 | 1992 kawasaki ZZR 250

1 Answer

I have a1987 kawasaki kx 250. it is very hard to kick

Once u have the piston out then there is a tool you can use for extracting the rings or you can simply use strips of tin and slide it behind the rings from were the two ends of the ring meet and slide them round the piston. Be very careful when putting the new rings on because ther are quite brittle

Feb 25, 2009 | kawasaki KX 250 Motorcycles

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