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Piston ring change

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Old 05-13-2007, 3:12 PM
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Re: Piston ring change

Alright, I've come upon another problem. I'm trying to get the clutch nut off and it just won't come loose. Something turns when I rotate it counterclockwise (the clutch gear and primary drive gears are locked), but it never advances on the threads. Does the engine have to be in gear to get the nut off? And if it does, how do I get it in gear after it's out of the frame?
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Old 05-13-2007, 4:11 PM
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Re: Piston ring change

If you have a service manual it should tell you how to do this, if you don't have one they are only like $10 to download one online.
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Old 05-13-2007, 5:34 PM
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Re: Piston ring change

Are you using in impact? You can put it in gear by grabbing hold this the shift shaft with vise grips (be very carefull not to damage the splines, use a rag bteween it and the vise grip). I'm with sinful consult a manual on what recommended procedure is.
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Old 05-13-2007, 8:22 PM
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Re: Piston ring change

I have the service manual, that is what has gotten me this far. I have been using an impact socket and a 20" breaker bar for all of the work I have been doing. The manual simply says to remove the clutch nut and lock washer. They don't explain how, so I assume it's simple.
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Old 05-13-2007, 8:26 PM
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Re: Piston ring change

Any engine I have worked on, once the clutch gear is locked it should just screw off. The outer clutch and gear is splined to the shaft the nut is on. It shouldn't just spin. Were you able to get it in gear, if so does the output shaft (where the sprocket goes) spin when you try and remove the nut?
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Old 05-13-2007, 8:37 PM
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Re: Piston ring change

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Originally Posted by scuba14c View Post
I have the service manual, that is what has gotten me this far. I have been using an impact socket and a 20" breaker bar for all of the work I have been doing. The manual simply says to remove the clutch nut and lock washer. They don't explain how, so I assume it's simple.
thats how helpful mine was with removing the front sprocket bolt... talk about a pain in the ass!!!!
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Old 05-13-2007, 8:47 PM
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Re: Piston ring change

need pics
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Old 05-14-2007, 9:57 AM
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Re: Piston ring change

I haven't tried getting it into gear yet, I'll get to that a little later today. How much force dhouls I have to put on it to get it to turn? I'm using most of my body weight just to get it started.

Here are the pics

Disassembly pictures from motor sports photos on webshots
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Old 05-14-2007, 10:40 AM
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Re: Piston ring change

Quote:
How much force dhouls I have to put on it to get it to turn? I'm using most of my body weight just to get it started.
To get what to turn? If you are talking about the clutch nut it is quite a lot, it shouldn't take much to put it in gear.
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Old 05-14-2007, 11:01 AM
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Re: Piston ring change

Yeah, I was referring to the clutch nut.
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Old 05-14-2007, 11:03 AM
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Re: Piston ring change

I don't know the exact torque but I think it should be around 75lbs. Use the impact on the clutch nut. How do you have the clutch gear locked?
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Old 05-14-2007, 11:06 AM
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Re: Piston ring change

looks like he is using the penny, it should come right off with an impact
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Old 05-14-2007, 11:09 AM
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Re: Piston ring change

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looks like he is using the penny, it should come right off with an impact

Am I missing something, where are you seeing this? The penny trick works great.
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Old 05-14-2007, 11:11 AM
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Re: Piston ring change

look closely where the counter ballencer and clutch gear meet, you can see all wadded up
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Old 05-14-2007, 11:13 AM
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Re: Piston ring change

I can't find any pictures.
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Old 05-14-2007, 12:46 PM
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Re: Piston ring change

The pictures are linked several posts up. Is it necessary to use an impact? I don't have easy access to one.
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Old 05-14-2007, 12:50 PM
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Re: Piston ring change

That is the easiest thing to do . If you use a breaker bar put pressure on the nut and hit the breaker bar with a hammer it generaly works better this way. Soak it down with pb blaster and try a little heat if no impact is available. I recommend the impact. it'll get it right off there.
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Old 05-14-2007, 1:30 PM
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Re: Piston ring change

you will catch hell with a breaker bar
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Old 05-14-2007, 3:39 PM
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Re: Piston ring change

Why would I catch hell with the breaker bar?

I'm just going to go buy an impact wrench tonight. We'll see if that loosens it.
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Old 05-14-2007, 3:47 PM
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Re: Piston ring change

the shock of the impact will usually spin them off, if you use an impact you have to make sure your air hose and compressor have enough volume to feed the gun. you can shock it with a breaker bar a friend and a big hammer
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Old 05-14-2007, 3:49 PM
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Re: Piston ring change

I was just going to get an electric impact wrench. It imparts 240 lb.ft. Will that be enough?
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Old 05-14-2007, 4:09 PM
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Re: Piston ring change

should be.
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Old 05-14-2007, 9:09 PM
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Re: Piston ring change

I bought the wrench. I spent an hour and a half with the breaker bar, the wrench only needed 4 impacts to loosen it! Now that the clutch and alternator are off, this should be apart by the end of the week.
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Old 05-14-2007, 9:25 PM
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Re: Piston ring change

Nice having the right tools for the job!
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Old 05-15-2007, 7:02 AM
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Re: Piston ring change

told you the breaker bar would be a biach glad you got it off
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Old 05-16-2007, 12:17 PM
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Re: Piston ring change

Hey, when I'm loosening these crankcase bolts, every once in a while there's some white liquid shooting out. Is this just a grease that honda used, or do I have something to worry about?
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Old 05-16-2007, 12:18 PM
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Re: Piston ring change

you did drain the oil right?
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Old 05-16-2007, 6:32 PM
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Re: Piston ring change

Yeah everything is drained. It looks like lithium grease, but I don't know why it would be in the screw holes.

The engine has been disassembled, and I think the leaking problem was caused by the piston rings not being aligned correctly. On the worst cylinder, the gaps were almost in line with each other. Is it normal for rings to rotate when the engine is in use? And if the rings are like that, does it mean I just have to spin them the other way to get the compression back up?

Here are pictures of the engine now-

Disassembly pictures from motor sports photos on webshots
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Old 05-16-2007, 8:00 PM
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Re: Piston ring change

I always put rings 120 degrees apart. Make sure to gap the new rings. As for the fluid in the case bolts, I have no idea. Are you using andything like wd40 or pd blaster? If so, then it could be that. Grease is not normally used on case bolts. Does the flywhee have to come of for you to get the crank out, it doesn't appear to? Did you use the puller or some other method, fast shipping on puller.
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Old 05-16-2007, 8:45 PM
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Re: Piston ring change

Would it be possible to reuse these rings, or would I be better off going with new rings. It looks like the only problem is that they rotated during use.

The alternator was the only part that needed the puller, and the impact wrench too and the motion pro puller took care of that. The crank just lifted out after I took the clamps for the pistons off. And I haven't needed to use any penetrating oil. I don't know what this stuff is.
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