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Repair & Maintenance Having problems? Doing a rebuild? All Repair/Maintenance Discussions here.

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post #111 of 116 (permalink) Old 08-02-2019, 08:43 PM
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Yeah its huge! And it works! :-)
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post #112 of 116 (permalink) Old 08-03-2019, 06:30 AM Thread Starter
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looking good bro !!.
thanks to you and retro...

1998 Honda Foreman 450ES
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post #113 of 116 (permalink) Old 08-04-2019, 05:00 PM Thread Starter
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Hey I have twins!! Hope I remember which one to work on.....
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post #114 of 116 (permalink) Old 08-05-2019, 08:19 AM
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OK got the halves together, feel like I accomplished something today, will keep the piston and valve push rod opening covered...pretty fancy workbench huh??
Better than my coffee table. Wife put a stop to that one real fast, so I usually do them on a big piece of cardboard in the floor of my shop.
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post #115 of 116 (permalink) Old 08-08-2019, 09:39 AM Thread Starter
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So front and back assembled looks like its piston time. I don't have a compression tool for the rings how do you guys do this and how many hands does it take?
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post #116 of 116 (permalink) Old 08-08-2019, 10:00 AM
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I've found it easiest to sit the cylinder in my lap, compress the rings with my fingers, and get the piston up into the cylinder. Then I slowly push the cylinder back out until the wrist pin hole is clear. It's VERY precise placement to get it there without pulling the piston out too far where the rings clear the cylinder and pop out, but if you get it just right you can then slide the cylinder and piston together down over the studs and slide the wrist pin in and push the cylinder down over the piston.

That works on a 500 and 420. Didn't work on my buddies Rincon so I just cussed and fought it for hours before I finally got it in place. That one I had to put the piston on the crank and try pinching the rings together and then push the cylinder down over the ring. An extra set of hands would probably have made it much easier.

You need oil, oil and more oil on piston and cylinder walls.
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