Predator 212 fly wheel is stuck

[G.W]

My theory: rod let go or the plastic governor gear blew to pieces. @Michaelmac3 please do the engine autopsy, we want to see the damage so we can help others prevent it from happening.

It is always cool seeing the inside of an engine, especially when diagnosing failures

 

[G.W]

Hemi vs. Non-hemi???
It's your preference.

I see more destroyed hemi's. People don't pay attention to the piston to valve clearance, then add +.020" longer rod, .009" thick head gasket, a cam with more duration and lift. It only takes 1 time for that piston to touch a valve and it's done
Post in thread 'Engine suggestions' https://www.diygokarts.com/community/threads/engine-suggestions.47305/post-593992

For mostly stock performance it is my favorite. I have a stage 1 kit and it performs way better than a non hemi with stage 1. Plus I think it sounds better

 

[Denny]

I’m betting he dropped a valve!

 

[panchothedog]

Danny's diagnosis is correct. Looks like you broke off the head of a valve, and the piston pushed it right through the head. Buy a new engine. Your head is shot, the piston is toast, and the rod, crank, and cylinder bore all stand a good chance of being tweaked. Not worth trying to save much. Probably the carburetor and the pull starter.

 

[pearl111]

Any suggestions on weather it would be easier to fix or just replace the whole engine

I used J&B weld epoxy to patch a hole in a Pred. 212 motor block. It works great. ......I accidentally drove a screwdriver with a hammer through the side of my Pred. 212 hemi. Put J&B weld on it, works great.

 

[Denny]

Won’t work on a cylinder head.

 

[Thepartsguy]

Three ways that happened you sucked in a piece of somthing through the intake. the throttle butterfly screw falls out and can get sucked into the cylinder or the valve did it. But he said in earlier posts the valves pushrods were moving so?

 

[G.W]

Three ways that happened you sucked in a piece of somthing through the intake. the throttle butterfly screw falls out and can get sucked into the cylinder or the valve did it. But he said in earlier posts the valves pushrods were moving so?

If it broke in just the right way it could still move. He should look in the intake and exhaust ports to see of the valves are still there.

 

[Denny]

Or just pull the stupid head! I would not trust anything in that engine anyways.

 

[G.W]

Or just pull the stupid head! I would not trust anything in that engine anyways.

No doubt that engine is toast. All of us might want to see what's wrong, but not everyone wants to pull an engine apart to see what happened. Some people just want to replace it and be done with it when something like this happens.

 

[Denny]

No doubt that engine is toast. All of us might want to see what's wrong, but not everyone wants to pull an engine apart to see what happened. Some people just want to replace it and be done with it when something like this happens.

Not a good practice. How do you know what went wrong to stop it from happening again?

 

[student👍]

well he removed the governor so im guessing that with the extra rpm and stock springs, the piston and the valve had a fist fight and you kw who lost?
your wallet

 

[student👍]

i aslo agree that its easier to just look through the intake and exhaust ports to see if your valve is stll ther or if theres something in the engine

also that hole in the chamber looks like a hand coming out of a grave
thats how you kw something went apocalyptically wrong

 

[panchothedog]

If you pull the head in order to investigate, you might even pick up a little knowledge. It's all of 20 minutes work.

 

[G.W]

Not a good practice. How do you know what went wrong to stop it from happening again?

I personally would tear it down, but not everyone wants to know how things work, they just want ot to work.

 

[student👍]

same

I personally would tear it down, but not everyone wants to know how things work, they just want ot to work.

just open it
What's the worst that could happen? you might take some more minutes