Would you all say that the YFZ is a dependable or not dependable machine? Ive heard some say that the engine on the YFZ is a ticking timebomb and that Yamaha designs the engine to only last 70 hours, true or untrue?
Thanks,
Cap'n

 

Untrue. Maybe the valves need adjusted after 70 hours. My old ds needed the valves adjusted every 100 hours of use, and it only revved to 8500 rpm. So I would think 70 hours could be right for a higher revving yfz. Got to love those high matinence dohc motors.

 

If you do not try to get every available HP out of them they are ok.
I have seen a couple of rods break and trash cases and cylinders.

 

Ours is pretty dependable, Its been riden for more than 3 years and nothing has broken yet, well we did do some bad to the sparkplug once but that was our fault.

 

I plan on keeping mine mostly stock. I will probably put an exhaust system on it, but I dont plan on doing anything crazy with it.
Basically, I will be racing it 2 weekends out of the year (drags, some XC racing, not MX), trail riding it 2-4 weekends out of the year and riding it on the lake some during the winter.
I doubt Id put more than 20 hours on it a year. If I can go 5 years between rebuilds, I think I could be happy with that. Also, when I trail ride and ride casually I will be riding with a Predator and utility quad riders, so its not like I will be running it near redline all the time.
Cap'n

 

Well, after shelling out close to 7large and once you ride that puppy, I bet you will find a way to ride it more than 20 hours/year. If you aren't constantly running near redline and doing a ton of race type starts, you'll get your five years out of it easily doing what you described. Might want to invest in a battery tender though for it.

 

Well too bad you live so far away. I'd let you "park" it at my house while you weren't riding it. Ya know I'd make sure nobody stole it and dust it every week.

 

LOL...Ive got a snowmobile right now and Im looking into getting something that has a longer riding season. I figure that the only quad that can even come close to matching the performance of my snowmobile is a YFZ.
Ive owned quads in the past ('97 Polaris Scrambler 500 4x4, '00 Polaris Xplorer 250 4x4) but I got out of the sport because I thought there wasnt anywhere to ride. Now I found some local races I can enter and realized that I can ride the lake all winter long, along with the trails in northern Wisconsin I can ride, so Id like to get back into the sport.
Ive ridden my brother's TLD Predator quite a bit, and its a fun quad but Im a Yamaha man, so YFZ here I come!
Cap'n

 

[quote]
Originally posted by: Sparky8370
LOL...I bet you would!
Cap'n

 

well, my brother has a yfz. It's a pretty nice machine. I recentley bought an 06 z400. I absolutely love it. We do mostly trails so he doesn't really blow me away, and I've got reverse. If your mostly gonna trail ride I'd get the z (as I did) but if you're mostly gonna drag than get the yfz. I'd do as much research as possible to see what fit my needs best. I researched for about 6 months before I bought my z.