I'm Glad I Took This QT Engine Apart

My latest acquisition is becoming quite a comprehensive preservation/restoration. But that's OK. I'll know what I have when it's completed! When draining the transmission before transporting it, there was water in with the oil. The owner said the guy he got it from said it had been left outside for an unknown amount of time, probably several years. I pulled the head to check the cylinder condition before attempting to start it and WOW! , deeply scored piston and cylinder wall from seized rings. Well let's just do the whole engine. So while waiting for seals, bearings, gaskets, a new top end ( stock) and some miscellaneous stuff, I took apart and cleaned the speedo head, the cables ( broken accel and choke cable), rear signals, both brake assemblies, repacked rear pinion, polished the chrome, and tested all the bulbs.

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Re: I'm Glad I Took This QT Engine Apart

Please post up a pic of the most important part... the carburetor. I want to see if the oil injection nipple is broken off of the carb housing from being knocked over or crashed.

Re: I'm Glad I Took This QT Engine Apart

Pushrod Fifty /

That piston is spent!

Re: I'm Glad I Took This QT Engine Apart

Sorry- I didn't take any pics of the carb and it's all rebuilt and ready to put back on. It wasn't broken anywhere and still had the original black hoses with the mini-mini constant tension clamps on both the fuel and the oil injector lines.

Re: I'm Glad I Took This QT Engine Apart

How does one do that to a cutie?

Re: I'm Glad I Took This QT Engine Apart

> Bob Naske Wrote:

> -------------------------------------------------------

> Sorry- I didn't take any pics of the carb and it's all rebuilt and ready

> to put back on. It wasn't broken anywhere and still had the original

> black hoses with the mini-mini constant tension clamps on both the fuel

> and the oil injector lines.

Check and see if the "low oil" indicator bulb is burned out.

Re: I'm Glad I Took This QT Engine Apart

The bulb bench tested OK but I found the oil pump shaft seal had popped out of it's place and the lip spring had broken, possibly allowing some/all of the oil to drain into the transmission. The water/transmission oil cocktail had some tinges of purple coating the gears so that could have been 2T from the oil tank, draining it and causing the scoring/seizing rings. Speculation, I know, but there's always something new to learn no matter how long we've been fixing stuff. I'll test the oil level sender when the engine is re-installed and there's electrical power to test it. Thanks for the suggestion.

Re: I'm Glad I Took This QT Engine Apart

> Pushrod Fifty Wrote:

> -------------------------------------------------------

> That piston is spent!

Ha . It looks a whole lot better than the piston I'm currently running in my FA50 .

And , have been for the last few years .

Just so you know , I'm not an 'easy rider' . Most often it's WOT . ;)

I might get a new piston and rings , maybe .

It got that way from me inadvertently pinching an oil line , once . Seized it real good .

Re: I'm Glad I Took This QT Engine Apart

^ Wait, there are other throttle positions than WOT on a moped? Who knew? :D

Re: I'm Glad I Took This QT Engine Apart

> Stephen Keller Wrote:

> -------------------------------------------------------

> ^ Wait, there are other throttle positions than WOT on a moped? Who

> knew? :D

Sure , idle . ;)

Re: I'm Glad I Took This QT Engine Apart

I guess there is that....I just dont stop often....lol

Re: I'm Glad I Took This QT Engine Apart

> Bob Naske Wrote:

> -------------------------------------------------------

> The bulb bench tested OK but I found the oil pump shaft seal had popped

> out of it's place and the lip spring had broken, possibly allowing

> some/all of the oil to drain into the transmission. The

> water/transmission oil cocktail had some tinges of purple coating the

> gears so that could have been 2T from the oil tank, draining it and

> causing the scoring/seizing rings. Speculation, I know, but there's

> always something new to learn no matter how long we've been fixing

> stuff. I'll test the oil level sender when the engine is re-installed

> and there's electrical power to test it. Thanks for the suggestion.

I always try to figure out the cause of a problem, starting with the simplest things first.

Re: I'm Glad I Took This QT Engine Apart

> live ɘvil Wrote:

> -------------------------------------------------------

> starting with the simplest things first.

Kinda like baby steps before a marathon . ;)

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