I Bought a MONSTER Honda TRX 700cc (Super Risky Buy)

"It just stopped working" Translation "We heard a big noise and then a crap ton of clanking around until it finally seized up."

If I had to guess. It was a chain reaction of events. First started by the lexx pipe and cdi box upgrade. More exhaust flow due to enlarged pipe and adjusted fuel map due to cdi upgrade Which in turn allowed to rev higher and floated a valve. In turn piston meets valve and boom bob's your uncle. The hole in the piston is from the valve stem giving it a little pokey pokey. Imo. I'd go back to stock. This particular machine is very robust right from factory. After market parts destroy machines at least in my experiences. For general all purpose riding, stock is the way to go. Just my opinion.

Get a boreascope and take it with you on your inspections. It's a great tool that will save you thousands and help the seller to remember what really happened to it. 🙂 It will also give you way more leverage on the amount you are willing to pay. You might have been able to get it for $900 - $1000. If they won't allow you to scope it just walk away you'll be doing yourself a favor. You will know they are hiding something!!!! Great teardown and assement back at your shop.

Watching this shows something important that I need to work on for myself: treating each task as a voyage of discovery instead of a major catastrophe. Total zen. No stress. Well done.

Man I have quickly become addicted to your channel, this is rad ass content and the vlog style going to buy then fixing is making them all hits. Congrats 👏

I've said it before I'll say it again. I love how calm and methodical you are. I wish I could be mire like this when I get into projects especially when unexpected problems arise. Looking forward to the 300 being finished as well. As for this I'd go big bore. You have more proof of work than almost any reseller. You should be able to get a premium for this when it's all said and done. Keep up the great work.

He knew that it had catastrophic failure he just wanted to unload it and hope that he could get somebody to buy it and take it without too many questions he's not an idiot even if you're not mechanically inclined you know when something don't look right like a spark plug

I have the same bike. The seller did the same thing to me…..said he was riding it and it just stopped. Told me it was the solenoid stopping it from turning over. Paid “$1,700”for it…..must be the scammers price for exploded 700’s. Hope you put out more tutorials so I know how to repair this thing. Up until your video no one has put anything online about the Honda 700xx.

I’m wondering if that tuner box removed the rev limit and it was over reved and then boom!!

Great stuff sir! I’m not even into ATVs, but I enjoy learning stuff and understanding how everything works. You’re highly skilled. Thanks!

It failed at high RPM, not doing 15 mph as he stated. the valve head was hammering around the cylinder for several revs before it locked.

Don’t forget to look in the bottom end for that little chunk that came from the hole in the piston. That could cause problems after a rebuild. Keep up the good work.

My guess is valve failure, too. I’d stick with stock bore and all Honda parts, rebuild it and flip it. Great video!

Sorry to see all the damage. I would remove that aftermarket tuning box. Seen them break before and leaned out the engine. Good luck with the rebuild.

Awesome video man. Good luck with the rebuild. I'm not familiar with trx700 but I've seen that kinda damage from downshifting instead of upshifting. Engine spins to fast, valve springs can't keep up and piston makes contact with the valves. At least it's in good hands now.

Dude if you're someone who knows what you're doing as you do, this is 100% worth the rebuild on one of these. Especially if you're getting any deals on parts.

When you're getting a good deal you have to assume the worst and not take seller info at face value. That usually works in your favor except for when it doesn't. When it doesn't, we get some great content and a real world idea of the risks associated with "needs work".

Honda out did there selves on the Trx 700, this thing is wild. The rear end alone is bad ass!

Loving your channel!! Watching your shows everyday lately. I’ve grown up with motorbikes so it’s great to be learning so much about the inner workings!! Thanks for sharing . Keep doing what your doing 👌Reuben from Queensland Australia

this seems to be the best small engine repair channel on the tube, thanks!