Frank Angerano

Welcome to quad crazy. The piston would probably fit but it’s not worth using it. There are two ways to go about it. You can bore the cylinder out and go with a bigger piston and rings and maybe have to re-jet the carb. Or you can buy a used one from eBay but I would buy a new piston since it’s all torn down. I just looked and found a used jug in great condition for $166. I rebuilt one of the same bikes about a year ago. Water cooled bike was super strong. I think I paid $45 bucks for a full gasket kit on amazon. I would also do the valve seals while your in there. But this all depends on the condition of the bike and if it’s worthwhile. Also are you sure the oil pump gear was the problem? Because here’s my question. The oil pump brings oil to the head to oil the top end valves, cams etc not the cylinder walls. That’s done by the oil that’s in the lower end. The piston could have just blown because it was beat on or the bike was ran out of oil.

Really the only thing I can think of is the timing. But even if the timing was off you would still get an ignition in the cylinder head burning off the fuel unless the exhaust stroke is pushing it out of the head and into the exhaust too fast before a full burn off? That’s a funny looking question! You’ve checked the spark is not breaking down after a few minutes of running ? I've seen some pick up coils out of spec with regard to the gap at the flywheel so maybe it’s a shot in the dark to check? Second is the pick up coil failing after it heats up and that would show up on the in line spark tester after a few minutes of running.

They really are. I’ve made so many different types of screw drivers to get up in there. This adjustment screw makes life a lot easier.

What makes you think it’s flooded? Wet plug? Excessive fuel left in the head ? Just curious. Valves should be adjusted to spec. A little wear is expected on the valves and rockers but would still be able to run. Have you tried to rebuild the original carburetor? I know aftermarket carbs are inexpensive but they don't work really well. I would rebuild the carb and set the air fuel mixture screw as per the manual and go from there. Then check ALL air intakes for any restrictions like bees or rodent nests. Check that the boot that connects the carburetor to the engine does not have a crack in it or a broken connection. Check the fuel delivery system and make sure the vent at the top of the tank is clear and not building up pressure inside the tank forcing unnecessary fuel pressure through the fuel line. I don’t think that bike has a fuel pump ? Make sure your fuel is clean. This should eliminate the fuel/carburetor problems. If the condition persists then you may have a break down in the ignition system and not a fuel problem. Maybe get an ignition spark in line tester that will show you the spark while the bike is running. If the spark breaks down as the bike gets hot it could be a bad pick up coil or rectifier, cdi etc. All can be tested with the exception of the cdi.

Hey @JacobSlabach welcome back how was the trip ? What do you mean behind it ? Is the cable connected and working and have you shifted the shifter so see if the gears are working ?

Wow cool mod to a go kart. It looks like an old Honda atc 200 engine. Maybe 82-85 on the year.

No worries. That’s what Quadcrazy is here for.

He’s super heavy lol. Didn’t look like he was in the shape of a heavyweight fighter by any means. I wonder what he’s thinking on this Monday morning! I’m not sure what the purse was but it had to be decent $

Busy bee ! looking good brother. I like the stiffener plates on the rear. Shop looks great and I love the table. Probably one of my next purchases. Nice work.

Looks good brother. Ride safe.

I watched a few minutes of the fight. I could not believe the outcome. He looked out gunned but just goes to show you that if you land a few in the right places the mighty can fall!

7/12’s is money ! Make it while you can! I’ve taken a look and there are parts out there. Even on eBay, depending on the parts you need. Make a list and post it on the forum and I’m sure myself and a few other members will know where to look and point you in the right direction and help out.

You will get there brother. And it’s very rewarding when you do. Once it’s running right then all the other stuff you want to do is a blast.

Any deeper ???? Any deeper your going to have a brand new bike when your done! Lol just kidding...... Take a look on YouTube I’ve seen a few different videos on splitting the engines for the Vinson just make sure you keyword it right. Cant hurt to post some pics where your stuck, maybe another set of eyes 👀 can help.

Your welcome. I hope it’s something relatively simple. Any questions you might have ask away. Also post some pics as it makes it easier to visualize something with a pic to help you out and don’t be shy there’s no such thing stupid question related to a quad repair. Good luck and yes please keep us posted.

Unfortunately your going to have to go through all of the components of the drive train to see what’s going on. Inspect everything, drive shafts, universal joints etc. You could be doing more bad then good by running it. I don’t think that the tires would do that but what I would double check and super important is the size of the tires. If the fronts are severely worn out it could cause a problem because 4x4,s must have all four tires rotating at the same time. So if one set of tires are worn out the tires essentially become smaller and rotate faster then the others. That can screw up the 4x4 last thing I would recommend is double checking all of your motor mount bolts, shock mounts and bushings etc. make sure nothing is jumping/banging because of a broken or missing bolt.

Have you taken the differential cover off and inspected everything ? Also try to get the bike off of the ground (all four wheels) safely and put it in 4wd give a little throttle maybe you can listen in and see what’s happening.

Good luck and keep us posted.

Take a few different color high lighters and a ruler. Color code the wires with the high lighter. Put the ruler on the paper where the wire is and run the highlighter along the wire so it’s neat. It will help out big time, and study it before you tackle it.

That with a fresh plug also ? Only other thing I can think of would be the regulator. The stator is putting out proper voltage ? Battery is putting out proper voltage ?

It locks out the start/cranking. Find the wires at the switch which should be located someplace around the shifter inside the engine and have two wires coming out and unplug them one at a time One of them should be green the other red. Not 100% sure of the color code. But one of them at least should be red. When they are unplugged you should loose the reverse light. Try to crank it then.

If the reverse light is always on it’s possible that the neutral safety switch is bad. That will lock the starting circuit out for sure.

Great bike. You should be able to find a manual in the download section but will only be able to do so by having 10 posts in the forum of contributing or by being a paid member. Now depending on how much you want to get involved with this bike you can find parts online via eBay and used parts dealers. Best to go back to the original solenoid and wore it up properly including the ignition switch all of which are cheap enough to replace.

Listen, I’m not sure what your situation is but I can tell you this. You have to make the time if this is something you like to do! I have enjoyed doing this work/play most of my life. I got married, had kids and all of that was put on the back burner for a long time. As soon as things settled down I had to make the time to do what I am doing now. Plain and simple this is what I like to do and it keeps me sane. Not saying it’s for everyone but you have a good old bike that you can get parts for and you can get the bike back to good. Question is do you want to have a project bike ? Its very rewarding bringing some back to life. Quadcrazy has a huge member base to help you along the way! Make a list, prioritize it and bang it out if this is something for you. No matter which way you go good luck!

Awesome pics brother. Doing great, keep up the good work.