Hi!
I have been reading a litle here and there about this crankproblems. Can anybody tell me whitch year they got it right for the Mach Z and what are the symptoms and the fix?

Norwegian

It is my understanding that all the triple crank problems were fixed starting 1999 model year production.

The MachZ never really had a crank problem "rarely" it was the 6-700 triples, mostly the 700.

I thing all the triples were prone to pto crank bearing poblems, but I have also seen them go alot of miles with out a problem, A lot of the problems come from not storing the engine correctly.
Formula500, doo you have a crank problem?? The symptom is a siezed engine the solution is a remanufacted crank, you can get them from Ski-Doo, I just heard that the reman cranks when way up in price. A triple crank is around $1500. cnd.

mr670, no, i dont have a crankproblem, i just wanna know that my engine isnt a typical crankproblem machine.

Ok, thanks for the reply'es! I like this forum! Seems like those who can help, want to, and there is MUCH less crap than on the scandinavian forums! I guess it is essencial to store the engine correct so the bearings dont get dry. I love my tripple! :devil:

I havn't heard of any 800 crank problems but i have with the 700\600 triples. The problem i heard of was the pto side oil port wasn't big enough to feed both bearings... those bearings would go and then take out the rest of them therafter. A shop here in North Bay Ont. does a mod for the triples afflicted with this problem. They drill out the oil port a bit to ensure enough oil gets to the bearings. Since the mod, every sled they've done are all running as strong as ever. SWRules

If you're handy with hand tools, I can tell you how to fix it for less than a 20 dollar bill. It involves drilling a hole in the crankcase, taping threads and installing a grease zerk. All you have to take apart is to remove the engine clutch. You'll need a couple of drill bits, 1/4 x 28 tap, grease zerk with 1/4 x 28 threads, set screw with 1/4 x 28 threads and a GOOD synthetic racing grease. I used Amsoil. Want all the info, let me know-I'll explain it it detail for you. Very easy fix-takes about 30 to 45 minutes total. After you've done it once, you could do it in half the time. I now have about 4300 miles on my sled (1997 Ski Doo Grand Touring SE) Engine is the same thing as a Mach 1----700 cc
Triple w/ Triple pipes