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Post by wrnchbndr on May 27, 2011 20:20:43 GMT -5
This is my second scoot project. Not even sure what to call it yet  Lotsa ugly  It was run without the fan and shroud for quite sometime. I think I can see daylight under the head.  got the body off gettin everything nut and bolted. I was lookin at a site last night and my finger tripped on the buy it now for a 90cc mill.  First thing the wife asked was " Is it stolen?" :lol: she thinks she funny Thanks for lookin ,Skip |
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Post by 190mech on May 28, 2011 5:40:49 GMT -5
Looks like a nice project!Keep us posted!!
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Post by 90GTVert on May 28, 2011 6:14:55 GMT -5
On top of seeing a little gap between the head and gasket, you can see oil residue in that area. I'd be pulling the head off at least anyway knowing it was ran without a fan and shroud. That's hard on these engines.
It looks like a minarelli engine, but I've never seen one with a CVT cover like that where the clutch portion sticks out so much. I wonder if there's anything different under there?
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Post by wrnchbndr on May 28, 2011 20:52:59 GMT -5
That residue in the pic is actually whats left of the shroud. It is melted all over the head also.  I took the head and cylinder off and was suprised there wasn't more carnage in side. There was some scoring on the piston, but the cylinder looks good other than the plastic melted on it and I've gotten most of that off. A few mins. in the sand blaster should take care of the rest  Not too sure of the make of the scoot but the body is the same as the Rocketa MC17 and it has this plate on it  Nothing odd under the cvt cover   Ive got the chassis cleaned up and ready for the new JOG90 that should be here Tuesday. Regards Skip |
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Bong
Scoot Enthusiast
Posts: 235
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Post by Bong on May 28, 2011 21:12:39 GMT -5
WOW, I never saw a cooling shroud melt to the head like that. Obviously it over heated. As for a project name I vote "Meltdown"  Double pun cause when shes road worthy You'll "Meltdown" the competition  Just kiddin around, Do keep us posted with lots of pics and details on the build!!!!! We all like to see these type of "rise from the ashes" builds  Then again, It might just be me that loves this kind of stuff  |
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Post by drawkward on May 28, 2011 21:43:14 GMT -5
The smell of that scooter going down the road... oh, my, god. There would have been no way to ignore the smoke. I don't even...
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Post by wrnchbndr on May 28, 2011 21:51:35 GMT -5
The bottom end seems surprisingly good I think a piston and rings would get it running again. May just do that for a back up.
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Post by wrnchbndr on May 30, 2011 19:46:33 GMT -5
Cory and I spent the day cleaning the garage and working on scooters. Here are some pics of what we found under the flat black, after we spent a couple of hours with lacquer thinner on some of the body panels   It needs some body work so I'll have to paint it. I was kinda diggin the color till Cory said it looked like a chick's color :lol:  Regards Skip |
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Post by 90GTVert on May 30, 2011 20:02:24 GMT -5
It's a shame you gotta work it and paint it. It was actually quite a nice un-paint job. lol
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Post by wrnchbndr on May 30, 2011 20:28:59 GMT -5
Yeah I was surprised how good the paint came off it. They did absolutely no prep work which turned out good for me.  |
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Post by marshinman on May 31, 2011 19:31:56 GMT -5
With a piston and ring looking like that I can just about guarantee that the cylinder looks equally as bad. You should have in honed to say the least. I would also be looking at the connecting rod bearing and pin. I have worked on a lot of 2 stroke bikes and when ever that came out of a cylinder you knew that at the least a honing was in order.
What do the reeds look like are they warped or bent. There is no way with that kind of heat that nothing else go damaged.
What does the fan look like is it missing fins or does it have junk in it, this could be the reason for it heating like that.
That looks like self detonation like a bomb went off.
You got your work cut out for you, keep us posted.
Here is a trick for you to learn.
If the head gasket is a copper gasket dont throw it away, you can re-use it. What you say.
Take a propane torch and heat the gasket up till it is cherry red and then dip it in anti-freeze, this will soften the gasket back to being pliable again. If it has a crack or rip in it throw it away. Copper doesnt go bad.
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Post by wrnchbndr on May 31, 2011 20:03:39 GMT -5
Thanks for the tip on the copper gasket. I doubt I'll do any thing with that head and piston. The motor has 2600 miles on it. It is probably gonna be my first stroker experiment.
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