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The general snowmobiling discussion. Discuss snowmobile tech, ask about trail conditions, talk about snowmobiling issues, whatever. Just keep it clean!

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Postby sleddogzrt » February 10th, 2005, 1:27 pm

I have riden about 10,000 miles on two ZRT 600 triples with no engine problems at all. All types of riding, but mostly trial riding.
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Postby XCSP_Dan » February 10th, 2005, 2:56 pm

I also had great success with the the triple I had. It was a 96 Polaris XLT. Traded it with 7800 miles. Nothing had ever been touched on the engine. Still had stong compression in all three holes.

Key is, and this applies to all sleds, is to let them warm up before you run them hard. Run quality fuel & oil and you should have long engine life.
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Postby DesertVenom » February 10th, 2005, 7:02 pm

Nothing Goes Like Three Holes!!!
1999 ZR600 EFI (Stock)
1990 Formula MX470 (I need a crank or rod kit)
1984 Yamaha RZ350 (Awsome Bike)
1983 Suzuki GS550ES (Great Bike)
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Postby reelrazor » February 11th, 2005, 12:48 am

http://www.groupk.com/rearseizures.html

Read the bit about cylinder torsioning.

#1(mag side) and #3(PTO side) fire at the same time(same coil). The crank torsions, the timing is controlled by the mag side, the load is applied at the pto side(a long ways away).

I have confirmmed the timing advance theory with a timing light and an old Sun 'scope.(marked the clutch and mag for tdc, dialed in the light for 5krpm at the mag-looked at how the pto side was and yep, crank retarded=timing advanced). So, apparently have the OEMs because they are building ignitions to compensate now.
JGW

No substitutions for revolutions
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Postby needmoresnow » February 11th, 2005, 1:36 am

I take your words over family members any day !!!!!!!!!!!!!!!!!
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