I have a mach 1 700 and have heard that triple cylinder engines last longer than twins. Is this true or not?

And if not what do you think the life on it will be

Mike

depends on who is riding it and if they take care of it or not.... I would say they last the same....

If any thing a triple is more of a problem,I think they tend to blow up more.the center cylinder is never the same heat is the other's

Yes the center cylinder does run hotter, BUT if you jet it correct it doesn't matter.

All 3 of my plugs are golden brown, so the heat has no effect on it. Also my heat gauge never comes up past 1/3 at the highest.

I would say it has A LOT to do with the driver. (up keep, oil, style.......)

The crank on my FIII600 let go at arund 900kms. Since it has been repaired, I have put on over 8000kms trouble free . I have raced mine in the summers since the repairs have been made and ride it like its stolen in the winter but with good maint. it keeps on chuggin. I ride with mostly triple owners and most are very reliable machines but like anything there will always be a lemon somewhere. some people will argue that they are unreliable but I have seen twin owners have just as many problems with their machines. Maintain it ,ride hard and have funafter all isn't that what its all about?

i think 8,000 miles is easy enough to get if you maintain it. i would think about rings at about 5,000 miles though, just to keep the power up there.

8,000 KM's is only 5000 miles.

To go from KM's to miles divide by 1.6 (and vise versa, miles to KM's, multiply by 1.6)

4,000 miles on my 1997 Mach 1 and counting, but that engine is out of a 1999 FIII 700. My old engine made it to about 1200 miles before I lost all of the coolant and it overheated (made it a long time before seizing, though, ).

My friend's 1997 Mach 1 700 has just over 7,000 miles on it. Crank update never been done (he is the original owner), he beats the snot out of it on the trails, asphalt drags, grass drags. Hasn't been rebuilt or re-ringed.

Another friend has a 1998 FIII 700 with about 4,500 miles on it. He picked it up from my brother's wife's brother w/ about 4,000 miles on it, and he let it sit for a couple years. Cleaned the goop out of the carbs and it runs good now.

Myself, I love triples, and my next new sled will be a triple. At least if they ever make one again. I think they do last longer because they don't get pushed as hard as a twin cylinder sled.

hey thanx :div20:

oh, BTW mine has just over 4000 KM's, or 2500 miles :div20:

yah mines got 4000Km or 2500 miles also

Less harmonics and vibration in a triple configuration. IMO, triples melt down LESS than twins.

I could see why a triple would go further miles before a rebuild. If a cylinder is down on compression on a twin, you'll feel it. If a cylinder is a little down on a triple, you could ride it for many many miles and may not even notice it.

the big bore skidoo's have a tendancy to blow main bearings. Other than this defect, they are good engines. Fast Mother F***ers.

I traded my 97' mach Z for fear of this happening with about 4000 miles. A rebuild should fix the problem for any die hard triple fans.

They fixed that problem in '99. You just have to drill out bigger oil ports on pre '99 models

Some guy on doo talk has 13k on his 98 Formula III yes you read that right 13,000 miles WOW

I know several people who have '00 Yamaha 700 SXs and they have over 10,000 miles without any major repairs.
I know another person who has a '97 700 SX with 14,000 miles.
One of the biggest factors is vibration. When I went from a '95 600 XCR to a '98 600 XC I could really feel the vibration in the handlebars. However, the sheer acceleration and torque of the 600 twin was well worth the noise, vibration and harshness.
Hebi

i think those f3 7s were the most underrated overlooked sleds ever built smooth great on fuel lots of lowend torqe and sweet triple sound but done quietly rode one alot but it didnt say cat on it. oh and 115 bone stock nice sled.

ive got 7500 on mine and i race it at the lake every weekend, ride there and back, never over heated on me.

one of the reasons the rotax engines might last as long as other brands is that the rotax sled engines have plastic bearing cages in the bottom end bearings.Once the plastic gets old or weak the ball bearing fly out like a granade.I see that as there only big down fall.

I have 8,300 miles on my tcat and it never misses a beat. I had a 94 machz and it blew up around 11,000 miles on it. I took care of it and even though it blew up at 11,000 it dont owe me a penny. I bought it with 4,000 miles on it and was able to put another 7,000 on it. Most of your Hi performance sleds can last a long while... just take care of it like others said.

I'd like you to say that to my neighbors 2000 Mach Z thats 9,000 miles and counting.

I have a friend who has about 12370 miles on his summit 7, he used it to check his traps every day, never really rode over 40 though.

I forgot, its a 2000 model, its the one I bought for free (my parents are friends with his family) lol, I was buying a fcat, but spent abotu 2000$ on my last trip, so I have about 800$ left to do repairs if needed...