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-   -   2 stroke fun for 200 bucks (http://www.advrider.com/forums/showthread.php?t=660717)

hardwaregrrl 02-16-2011 10:14 AM

2 stroke fun for 200 bucks
 
Lookie what baldwithglasses and I just picked up:evil


http://i814.photobucket.com/albums/z...l/82f849bb.jpg

More info to follow

anotherguy 02-16-2011 10:20 AM

Wheee..........looks like a fun toy.

England-Kev 02-16-2011 10:22 AM

That seems a lot of money for a salad sandwich:D

Beater 02-16-2011 12:40 PM

OOOoooo ... That's stoopid-fun there. Reminds me of the YZ125 of my youth ...

Nice find!

KZJohn 02-16-2011 01:02 PM

I had one of those! Same year,size,model. That bike was a blast. I rode it everywhere, to work, on the motocross track, the dez, school. I ran it so long that I had to resleave it after the last oversize piston then picked up another cylinder and went through all the overbores/resleave on it too. Great bike.

WB-PDX 02-16-2011 02:39 PM

Great machines. Sold for a really long time (still?) in other parts of the world; MX especially.

Here is my 77 TS185 (sold) with a few modifications:

http://farm4.static.flickr.com/3228/...20c9a9cd66.jpg

bumblebee1 02-16-2011 02:44 PM

200 bucks??? :eek1
Is that the rental for the weekend? :deal

hardwaregrrl 02-16-2011 02:46 PM

http://i814.photobucket.com/albums/z...l/e23cd868.jpg
Not much progress. Water in the carb and compression is very low. 60psi

Sniper X 02-16-2011 03:08 PM

Quote:

Originally Posted by hardwaregrrl (Post 15206959)
http://i814.photobucket.com/albums/z...l/e23cd868.jpg
Not much progress. Water in the carb and compression is very low. 60psi

yeahbutt, both are super easy fixes and won't cost more than a night on the town. Plus, after fixed it will be way mroe fun than a night on the town!

bgoodsoil 02-16-2011 06:23 PM

I didn't have any carb cleaner. Maybe a jet was clogged.

We pulled the muffler off and looked into the exhaust port. There were streaks down the side of the piston. We had a bright blue spark and still couldn't get it to fire using starter fluid. I emptied the float bowl, there was a lot of water in it. We're getting fuel to the bowl. Jenna checked that with the bowl drain. The slide's moving fine.

Jenna got the good 2-stroke oil that's made for oil-injection. Changed the oil in the sump. 20w50 dino juice motorcycle oil. I kicked it with the muffler off and they saw a flame come out. Even with the low compression I expected to at least get it to run badly but it didn't run at all.

Putting on the Sherlock hat: I'd say somebody older owned this bike and they gave it to a nephew or a son. That guy happened to be a stoner teenager that runs it into a creak and causes all kinds of mayhem in the top end. Worst case scenario: bore the cylinder for $75, get new pistons and rings for $50.

Anybody know if a TS250 top end will fit? :evil

One Less Harley 02-16-2011 06:29 PM

good looking little bike, rings,oversize piston, bore. Have you actually priced pistons lately????? I bought a Wiesco for a MT250, prices are frigin' ridiculous.

concours 02-16-2011 06:35 PM

Quote:

Originally Posted by bgoodsoil (Post 15208510)
I didn't have any carb cleaner. Maybe a jet was clogged.

We pulled the muffler off and looked into the exhaust port. There were streaks down the side of the piston. We had a bright blue spark and still couldn't get it to fire using starter fluid. I emptied the float bowl, there was a lot of water in it. We're getting fuel to the bowl. Jenna checked that with the bowl drain. The slide's moving fine.

Jenna got the good 2-stroke oil that's made for oil-injection. Changed the oil in the sump. 20w50 dino juice motorcycle oil. I kicked it with the muffler off and they saw a flame come out. Even with the low compression I expected to at least get it to run badly but it didn't run at all.

Putting on the Sherlock hat: I'd say somebody older owned this bike and they gave it to a nephew or a son. That guy happened to be a stoner teenager that runs it into a creak and causes all kinds of mayhem in the top end. Worst case scenario: bore the cylinder for $75, get new pistons and rings for $50.

Anybody know if a TS250 top end will fit? :evil

Nope. WORST case scenario is rusted crank roller bearings, conecting rod needle roller bearings on both ends. I hope it's NOT the case, but I've done a few sleds that were sunk and set. The transmission calls for 10-30 oil, not 20-50, JFWIW when you get it running.

anonny 02-16-2011 06:42 PM

Nice score, looks all there and in good shape.

bgoodsoil 02-16-2011 07:20 PM

jenna found a manual on-line that called for 700mm of 20w-40. It's GA, seemed better to go to the warm end of things and use 20w-50 rather than 10w-40.

I hear ya on those crank bearings. The oil was pitch black so it was old but it wasn't milky. I don't think there was any water in the bottom end. Jenna drained it into a pan then poured it into the oil catcher looking for shavings. She said it looked good. So far I haven't seen anything to think there's anything wrong with the bottom end.

norton73 02-16-2011 07:32 PM

If you're getting a flash out the exhaust, check the timing. I'd guess that thing has points, start with the gap, then static time it.

2 smoke compression is different than 4 stroke compression. The piston only starts compressing when it passes the last port, which maybe 2/3 of the way up the stroke, unlike a 4 stroke, which starts compressing when the valve closes.
60 PSI doesn't sound too low, but then it's been a while since I checked.

Once you get it running, use Silkoline light gear oil in the tranny. It treats me well in my trials bikes and I run it in the primary on my Norton. Far better than any dino oil for the gears and clutch.

Next time we're sitting around a campfire, remind me to tell you a story about launching old enduros into lakes.

Oh, BTW, that's not the stock taillight


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