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Old 05-15-2009, 10:02 AM   #31
photomd
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Quote:
Originally Posted by Stagehand
So weird, I just developed this strange tic on the left side of my face



feelin kinda woozy. Is that nostalgia?
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Old 05-15-2009, 11:35 AM   #32
BubbaZanetti OP
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Quote:
Originally Posted by Stagehand
So weird, I just developed this strange tic on the left side of my face



feelin kinda woozy. Is that nostalgia?

lol, if you wanna come down an help, you're always welcome
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Old 05-15-2009, 10:46 PM   #33
Inane Cathode
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Re: media blasting

Just make sure you avoid the valve seats and especially the valve guides when you're blasting. All you need to do is take the finish or god help you significant amounts of material off the ID of the valve guide.
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Old 05-16-2009, 05:54 AM   #34
Stagehand
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Quote:
Originally Posted by BubbaZanetti
lol, if you wanna come down an help, you're always welcome
Thanks! That actually sounds like fun. I'm thinking of starting a new line of work travelling around helping people forget o-rings!
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Old 04-05-2010, 07:01 PM   #35
ricohman
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Quote:
Originally Posted by Wirespokes
It all depends...

Don't you just love that answer??

Have you been in there before? Is the piston carboned up?

Frankly, it's really easy to leave the piston attached to the rod (if no piston cleaning is needed) to do the job, and to slide the piston back into the cylinder. I use my thumb nails to gradually work the rings back into the cylinder one at a time and it goes quickly - like a few minutes.

Clean everything up really well before taking apart to help prevent grunge entering the crankcase, but once apart, you'll want to clean some more - guaranteed!

So I'd say it all depends on the carbon build up. I prefer to remove all carbon and polish the piston tops and compression chamber and remove any sharp edges protruding into it - like around the spark plug and the edges of the valves. Carbon and sharp edges radiate energy and promote pinging. You'll notice the difference once this has been done.

And ensure the ring gaps are separated 120 degrees. I like having the oil ring with the gap up, which leaves the other two forward and back. It makes the most sense to me to have the compression ring gap towards the intake rather than towards the heat of the exhaust.
I may be doing the push rods seals on a 94' R100GS soon, if my buddy buys it.
I was planning on leaving the pistons on the rods as I could see no real reason for not doing it this way.
Unless of course there is a lot of buildup.
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Old 04-06-2010, 11:10 AM   #36
Rob Farmer
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Quote:
Originally Posted by ricohman
I may be doing the push rods seals on a 94' R100GS soon, if my buddy buys it.
I was planning on leaving the pistons on the rods as I could see no real reason for not doing it this way.
Unless of course there is a lot of buildup.
You will need the patience of a saint and the fingers of a gynaecologist. Good luck.
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Old 04-06-2010, 06:34 PM   #37
Grider Pirate
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Quote:
Originally Posted by P B G
Just from curiosity, what's the fit on the wrist pin? Is there interference with either the rod or piston or is it floating on both faces?
Depends on the year. Early bikes, heat the piston to get the pin out. Later (I think all the Nikasil) pin floats in the rod and the piston.
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