Liduno's vertical 250 By Bashan (Read 2,450 times)

[Alleyoop]

Well that could be it If when you bring the piston up to TDC and you cannot see the timing mark ROTATE it 360 degrees again and look for as it it coming up again. Now I have to question the valve adjustment since this is a 244 vertical motor which has the valve adjustments on the outside. So take the plug out stick a straw down into it and turn the motor over by hand and watch the straw to see when it comes out the highest that will be PISTON is at the TOP but not necessaryly on the COMPRESSION STROKE now look at the flywheel to see if you can see the marks. IF not rotate it again and let the straw again come out the higest NOW again check for the timing marks on the flywheel. ONE of those will be TDC.

I mean who knows what they did to this motor the WOODRUFF key could be shot for all you know or they took the cam off and installed it wrong.
Alleyoop

[liduno]

Man that would suck...lol

I used the straw trick to find TDC when I was adjusting the valves and I could see the valves opening through the spark plug hole so I new I was on the right stroke. I also watched the flywheel through a few full rotations looking for A mark of any kind.

Any chance the mark has worn off over time? Is it just a line or does it say TDC? Or just the letter T?

It's quite the project to get the CVT cover off this thing to turn it over by hand. I know because to set the valves without the engine running you have to
1-Get it to TDC
2-Move the adjuster till you feel tension from the valve
3- Back it off a half click.

After I had it running and up to temp I did the adjustment the easier way.
1-Backing off till it clicks
2-Moving it till the clicking stops.

I had marked the adjuster when I did it the first time, with the engine not running. The results were the same.

[jct842]

Liduno, if you do drill out a jet too far...just solder it shut and start over. When a dog ended the life of my 150 it had over 5000 miles on a soldered over jet. I was always going to order the correct size but I forgot what drill bit I used. Got several sets of oraface drills. 3 I think.

[Bashan]

Jan 9, 2015 21:37:24 GMT -6 liduno said:

When I was adjusting the valves I had both peep holes open, I could not see a single mark on the fly wheel or the timing chain gear.

They are there but they are almost invisible. I'll get some pix of them tomorrow.

[liduno]

Jan 9, 2015 22:42:15 GMT -6 jct842 said:

Liduno, if you do drill out a jet too far...just solder it shut and start over. When a dog ended the life of my 150 it had over 5000 miles on a soldered over jet. I was always going to order the correct size but I forgot what drill bit I used. Got several sets of oraface drills. 3 I think.

I doubt I would be able to solder it without turning the whole thing into a giant blob of solder..lol  I can solder 2 wires together and occasionally get a piece of copper pipe to not leak, but that tiny little jet would be a challenge.

[liduno]

Jan 9, 2015 22:55:37 GMT -6 Bashan said:

Jan 9, 2015 21:37:24 GMT -6 liduno said:

When I was adjusting the valves I had both peep holes open, I could not see a single mark on the fly wheel or the timing chain gear.

They are there but they are almost invisible. I'll get some pix of them tomorrow.

I figured there had to be something there I just couldn't find it.

[cyborg]

180 out?,,, quite possibly

[liduno]

Here's the thing, when I first got it running it seemed to run great, till the auto choke fully extended.

[Alleyoop]

From what you just said it is LEAN so if you unplug the ENRICHER it will keep on feeding it more fuel and not shut the extra fuel off.
You are bouncing from one thing to another and saying things that are opposite of what you said before. In one you say if you take the air filter tubing off the carb it runs better(BUT THAT INDICATES IT IS GETTING TO MUCH FUEL). This last one INDICATES NOT ENOUGH FUEL SO PICTURES BRO, of the carb area the hoses and the Valve adjusters on the side of the valve cover.

[liduno]

Trust me I see the contradiction. It goes against all conventional knowledge..lol That's why I'm on this forum talking to people with experience on this motor.

I did try leaving the auto choke/enricher unplugged. From a cold start to normal operating temperature it made no difference. I Plugged the auto choke back in, turned the key on, and watched it extend. Took about 5 minutes.

My crappy arse flip phone takes pictures so blurry on small things that you wouldn't be able to tell what you were looking at. Is there something specific you are looking for?





It will not rev with the with the air box all together but it will rev some if I take the airbox cover off but leave the filter on

[Bashan]

Here's the flywheel marks. There's three and of course they are supposed to be viewed through the reference window to get the engine in the proper orientation. The one lining up with the T mark is hard to see here:

This is a little better:

This is as good as it gets:

One more from the top:

If you think they are hard to see here you should try identifying them through that little window that's about as big as a quarter! I'm assuming you use the mark that lines up with the T. That's what I did and it did start.

[liduno]

Wow! I don't think it's possible to see that through my peep hole..lol All I could see was the edge. Maybe the engine cradle is in the way on the buggy.

I have some semi good news. I drilled the jet out a little more and now it revs with the air box installed. WOOHOOO!! It's still too lean though, red exhaust pipe and backfire after a WOT run and the plug is white.

I need to go bigger but of course those drill bits are the ones I broke. I suspect I'm going to end up somewhere near a 138.

[jct842]

I hope you are not using a powered drill motor on those small bits. They sell a pin vice for them and I am using a miniture jacobs chuck with a 5 inch long shank in my fingers. A pin vice is about the size of a fat ball point pen and chucks the bit in the end. A motor will snap them off in a flash.

[liduno]

Believe it or not I use my 1 HP floor model drill press..lol The trick is to feed the drill slowly. I was free hand drilling carbon fiber rod when I broke the other bits. I can drill brass jets all day long with no issues. My pin vise is frozen solid from lack of use.

[liduno]

Drilled out the jet some more and got it running pretty good. I know it doesn't make sense but it worked.

Bashan, I took another look at the peep hole, there is no possible way to see timing marks on this motor without taking the stator cover off.

I suspect maybe it has a larger stator than what the peep hole was designed for. I can only see the lip of the magnet.