They look pretty.
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Cool pics..you can see the cross hatches from the honing.. looks good man!
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Nice Ken - Be certain that the port edges are not sharp.
They look like they are good to go but verify that just to be sure. It's hard to tell from the pictures. I made that mistake once and had a piston ring shatter on the sharp edge of a transfer port after building up an entire Kawasaki 100 from scavenged parts back when I was about 12...I remember thinking: "What the hell just happened? oh well, it's still running so it can't be that bad." :doh::lol::doh: |
Rob
it was the first thing I checked when the barrels came back. They did a good job of dressing the edges of the ports. thanks Ken http://i20.photobucket.com/albums/b2.../TZ250/009.jpg http://i20.photobucket.com/albums/b2.../TZ250/005.jpg |
Ay,
You start puttin her back together yet?:ride: |
today it begins..
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Got the motor completed today, just have to pressure test it. I put in a new clutch cover, new heads, replated cylinders, new pistons, bearings and some other stuff.
If I get the pressure testing done soon, I will fire it up and get it ready for the next track day. Ken |
Update.
I just got finished pressure testing the motor. I have the left cylinder holding pressure at 6PSI. THe intake manifold was leaking air and it took a little while to find the leak. Now its A-OK. The right one (forward cylinder) is leaking air into the cooling system. I pulled the head and re-sealed everything and checked the o-rings. Everything looked OK, but it still leaks. I have to pull the barrel now and check the base gasket to see that there is adequate sealant on the case/underside of the barrel. I was also sent the wrong heads and I had to return them to RSCYCLES.com for an exchange. While I was at it, I ordered the replacements to be from a 2000 TZ125 and I am having Roland Cushway machine them for the TZ250. Looking forward to getting those installed on the motor at the next top end rebuild. Tomorrow morning, I will be pulling the barrels again and re-checking the base gaskets and applying a little more Yamabond to everything. Sucks that I ran out of time today I have to head into work now. I am hoping that this takes care of the air leak. I would like to get the motor back into the bike this week so I can have my 250cc lawn mower back on the track soon. Ken |
Quote:
I am pulling mine apart tonight... new bottom end is needed I fear. |
Turned out to be my front cylinder base gasket. Some high heat silicone and that was it.
All buttoned up and ready to re-install. Ken |
Nice one Ken!
Ride it well and in good health! ps: wish I was going this weekend :sun: |
Nice work Ken, can't wait to see this thing in action :ride:
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I got the motor re-installed. I have to clean the carbs and set the ignition timing in the morning. Looking to fire it up tomorrow.
Ken |
Quote:
I am headed out with Jeff Quinn Saturday. Hitting the Boxing match in Jersey City on the way home. My brother is fighting in a charity bout there. Oh and clear out yout AOL mailbox ..emails have been getting kicked back for over a week. Ken |
I must say this is quite the interesting post! Never owned a 2 stroke nor realized the amount of work that can be involved with them. Excellent thread!
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