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Everything looks perfect other than the smoke. No matter what you got a fantastic deal for $400!

Based on the condition and how dirty it was it doesn't look like it was well taken care of previously. I'm willing to bet the rings and cylinders were worn and that's why it smoked from the start. Also that valve left a pretty good dent in the one piston, it may have moved material and deformed the piston making it not perfectly round anymore and it doesn't take much for it to push on the cylinder wall. That would have made it score the cylinder fast and eventually caused a ring failure resulting in the smoke.

you needed a new engine from the start but I don't blame you for putting on a band-aid. cheap find you have everything you need just get engine and you are good 2 go

Throw a new 37 vanguard on there. Love the build!!

When you get it running again, I wonder if the seat would clean up with some mold & mildew spray and a magic eraser? Great video series.

What a cliffhanger!! Im ready for part 4 bro! I am rebuilding my John Deere 717a now too!

Nice paint job mate 👌 In Australia Scag is a slang term for junkies.

Heartbreaking, after all that hard work and effort. Hopefully it turns out to be a seal or something minor. You never know until you get into it. You'll still have a nice mower when you're done!

great job brother! you will get it sorted! waiting for the next video! the SCAGa continues!

The work you did on the engine looked to have been done correctly. Wonder what caused the failure. I hope the other head didn't drop a valve seat as well. Actually I hope it did. Because that's a less invasive repair than almost anything else. It starting to smoke only while under load, though, makes me think piston ring :(

Sounds like it’s running off one cylinder. Need to check spark. Check valve adjustment. Even make sure the reed valves are good.

Good job

That mower turned out great! Depending on how catastrophic the engine is try to find a known good used engine for it. Try to stay away from another kohler though they are ok if theyve been taken care of but always had the most issue when they came into the shop

I have an old Cub Cadet Tank that started smoking like that. Runs great, but because of its age, the hydraulic hoses get dry rotted and will split. One busted and was spraying hydraulic oil on my muffler. I replaced all four of the hoses, never another problem.

Nice job my friend

You done a great job on that mower! It looks great! Don’t know what happened but im sure you will fix it! Great Video!

Did the rings out on the pistons?

I just restored a older Kubota Diesel Zero turn and I swear I blew my budget with all the new parts I put on it and painting areas to get it good as new.

Awwww Mann u put in all that work for the engine to blow dammm at least when u get new engine you’ll have a new mower

Oh no! Hope you can fix it!

the way it smoked and where it came from makes me think its drivetrain. like a belt or a clutch. didnt seem like the smoke came from the exhaust. either way, im ready to see what happened

24:50 engine 💣💥

You ever do a compression test after you reinstalled the new heads?

in your first video, there was a very bent upper shock bracket on the upper right side in the back

3 out of 4 of my brand new scags purchased 2 years ago smoked like that on start up (all Kawasaki's). the dealer didn't answer my calls, emails or text messages. The 4th scag from a different dealer was a tiger cat with a Vanguard 28 EFI. the new mower went from my trailer into my conditioned garage and the next morning I had 5 puddles of oil on my epoxy floor. It leaked from the Vanguard due to missing gasket material and the Parker wheel motors were not torqued correctly and also the hydraulic fittings at the pumps were loose. The dealer bought that one back, but scag didn't do anything to make any of it right. scag sucks.

Good job,keep up the good work man

It's possible there could have been a blockage (rodent nest) under the engine cover causing cooling air not to circulate, overheat the engine and drop a valve seat. Hope its nothing major and is an inexpensive fix. Good luck and nice job.

now you took a new one engine for that scag wildcat ride on mower

Even a new engine, you’re still in it low enough.

Still firing on 1 cylinder? I must have missed a video.

I personally would avoid modern Kohler twin Engines and put in a Kawasaki because they are bullet proof Kohler dropped the ball around the mid 2000s. and from experience I despise Briggs Intek V twin engines no matter how well you take care of them they fail but The vanguard i hear is a great engine.

Rebuild time! That sucks bro but at least it will be fun to watch the videos for us 😅

what happen

you should have took a leaf blower or compressesed air to blow the whole mower off first because your pressure washing of the mower would be faster and more efficient and effective if you blow it of first before you pressure wash it.

Ironic, the very first thing that’s usually done with Scag mowers is remove the grass flap😂

Should of replaced those old pesky lifters

There’s more to the story…let’s see what happened

Part 1 m.kzfaq.info/get/bejne/n5ynpdaQpsDbdZ8.html Part 2 m.kzfaq.info/get/bejne/d5mSlLp8qbzWmIE.html

Blown engine, big repair, big money.

Head gasket maybe

Moral of this video. Never buy a scag mower.

should have 1) used a leaf blower first and 2) left the air cleaner/filter assembly in place.

A wash and a paint job isn’t a restoration. Why do you think it was $400.

Drove one just like that one great mower,only thing I didn’t like was that you sat so low every thing blew back on you.

Put a new Kohler engine on it.