Did my china girl blow up??

fall_down_stand_up · #1 09-09-2009, 09:28 AM

I had a spare 66cc engine laying around and mounted it last week....I had about 11 miles on it and was staying around 15mph for break in....As I was going down the road I heard a "cling" sound like my tire picked up a peace of metal on the road and threw it up into my fender....My first thought was here comes a flat,well about 20 seconds later I hear the "cling"again and thought man that had to have come from my motor,whats the chances of hitting 2 peaces of metal on the road with the same sound....The whole time thought my engine sounded great,then about 10 seconds after the second cling the engine started making all kinds of clinging and clanging noises,so I pulled the clutch in and the engine stalled....After coasting for 15 seconds I dumped the clutch and the back tire was locked up but if I pull the clutch in it coastes fine....With the clutch in it does have a slight sandpaper rubbing sound,but mabe im hearing things.....What was really strange with this engine was when I went to mount it I could not believe how far the clutch lever set in....of all the engines I have had I have never seen one ajusted so far in....It made for a perfect straight shot were there was no angle or bind in the cable....It was the smoothest clutch I had ever had....Could it be something in my clutch?
John-John

Kevlarr · #2 09-09-2009, 01:40 PM

Quote:

Originally Posted by granbury_man

Could it be something in my clutch?
John-John

I think the question may be is there something missing from your clutch. From what you describe the difference in angle on the clutch arm may just be the width of a missing ball bearing?

fall_down_stand_up · #3 09-09-2009, 09:00 PM

Quote:

Originally Posted by Kevlarr

I think the question may be is there something missing from your clutch. From what you describe the difference in angle on the clutch arm may just be the width of a missing ball bearing?

I pulled the rod and ball bearing out and greased it and put them back in....

**Dan** · #4 09-09-2009, 10:23 PM

any news GM?

Humsuckler · #5 09-09-2009, 11:23 PM

hm. clutch id say. especially if it runs fine still.... well. aside from not anymore if its that fubar.

pull that **** apart and take pictures for us

fall_down_stand_up · #6 09-10-2009, 12:21 AM

Quote:

Originally Posted by Dan

any news GM?

Yes I have some news and its all bad....Pulled the head today and the head gasket was hitting the piston and got shavings all down the cylinder....Its strange how the gasket was off center(only one side of the gasket was beat up),but whats really strange is the cylinder walls are smooth as silk....You would think I would have been able to hear the piston hitting the gasket,but It ran quiet and smooth as a sewing machine until it clanged and stopped....The only thing I can think happened is some of the shavings got down in the crank and messed up the bearings....tomorrow I will put some oil mixed with gas or some wd 40 in the cylinder to see if it will free the piston up so I can take the cylinder off....I have been to busy with a new engine today....
John-John
(aka GM),no wait that wont work im a Mopar man lol.... No GM will work lol....

Oh one more thing dan,I showed my girlfriend your bicycle video and she laughed her butt off....I dig the mega phone ductaped to the helmet....

Humsuckler · #7 09-10-2009, 12:31 AM

put diesel in it it will free it up i bet!

fall_down_stand_up · #8 09-10-2009, 12:43 AM

Quote:

Originally Posted by Humsuckler

put diesel in it it will free it up i bet!

Hmmmmmmmm ok I will buy 12 ounces of it tomorrow at the pump(got some empty bottles laying around somewere lol)....
John-John
AKA GM

fall_down_stand_up · #9 09-10-2009, 01:09 PM

Got an update....At closer inspection looking down in the cylinder I noticed that a small shaving was wedged at the very top of the pison....If I can get a sharp object like an ice pick or something to flip it out....or a tooth pick mabe?The cylinder walls are super smooth the motor only had 11 miles on it when the head gasket shavings got on top of the piston....If I get it out,do you think the engine will be fine if it turns over ok?I mean it is a very small shaving....I figure I just put a new head gasket on it and it will be rocking....

**2door** · #10 09-10-2009, 02:16 PM

If I understand you correctly, the engine is seized and the crank will not turn? If that's the case I doubt a small sliver / shaving, as you describe it, would be enough to bind it that much. If its bound tight enough to stop your rear wheel from turning I'm thinking you have more serious issues than a small piece of gasket material wedged. Keep us posted; this is an interesting problem.
Tom