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97 Formula SL 500 blown engine

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97 Formula SL 500 blown engine

Postby PJLundborg » December 15th, 2003, 3:29 am

My son was riding this weekend and blew the engine on my 97 Skidoo. Before I bring it in for repair, can anyone give me a guest at the costs. There is a pretty good sized hole directly below the exhast and I can see one of the piston rods that is broke in half. Thanks for your input. Ride safe and have great holiday.
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97 Formula SL 500 blown engine

Postby LoKey » December 15th, 2003, 4:27 am

Thats some serious damage described. Ask your local dealers if they have a used engine for your setup. I think replacing the entire engine would be your best bet for time, money, and reliability afterwords. Post up want ads and see what you can find.

Good luck PJ
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97 Formula SL 500 blown engine

Postby kawicat » December 15th, 2003, 4:35 am

yeah, that motor would cost a fortune to rebuild. you need to have the crank rebuilt, with a a new rod, most likely new crankcases, new jug, piston, and maybe a head.

i would pull the old motor and throw it on the shelf for spare parts, and find a used on at a salvage yard.
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97 Formula SL 500 blown engine

Postby T'NT340rider » December 15th, 2003, 4:53 am

find a used engine. They range anywhere from 200-1500$ depending on miles, mods, age, etc. Much cheaper than rebuilding what you described.
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97 Formula SL 500 blown engine

Postby Bug Eyed » December 15th, 2003, 9:37 am

How'd he do that, riding in Iraq?
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1989 [red]Yamaha[/red] Phazer
2000 [blue]Polaris[/blue] XC 700 SP
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Bug Eyed
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97 Formula SL 500 blown engine

Postby skidoorider » December 15th, 2003, 10:20 am

Is this sled a 2-up rider ? I would be interested in buying it if you decide not to repair it.

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97 Formula SL 500 blown engine

Postby doo it » December 15th, 2003, 2:56 pm

Try I think thats the web adress. It's Central Snowmobile Salvage. They have rebuilt and used motors. I looked at the rebuilt price a while back. I think they were like $900.00

I'm rebuilding a 1996 503 fan in a SL right now. I picked it up for a song(Free) and the chassie looks like brand new! I will have about $500.00 to $600.00 in it when I'm done. Mine came from a guy that pulled something way heavy and took the PTO end crank bearings out of it and drove it untill the bearing bunched up and cracked crank. The rest of the motor looks like new Pistons, Cyl, heads, crank case.

If I were you, I would go with a rebuilt motor from someone like Central Snowmobile.

Take Care
doo it
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97 Formula SL 500 blown engine

Postby 583MXZ » December 15th, 2003, 5:34 pm

I had a 96 Sl with a blown 503 rotax motor also. I found a 1979 blizzard with a old 503 in it and bolted her in. I used all of the mounts and exhaust off of the newer motor, and it all bolted right up. It took awhile to work out the key and kill switches though, but I got everything to work(ever the grip and thumb warmers) in about 5 hours time.
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97 Formula SL 500 blown engine

Postby PJLundborg » December 16th, 2003, 4:28 am

Thanks for all the input. The cause of the problem is still unknown. He said it "just happened" and I guess most things run fine until they break, or in this case - explode. At this time I'm going to try and find a rebuilt motor. I found the Central Snowmobile site and it looks like a rebuilt motor will run me about $1000. Thanks again for all the input. Have a great holiday and ride safe.
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97 Formula SL 500 blown engine

Postby ski-dont » December 16th, 2003, 7:44 am

I just dropped off a completely rebuilt 503 for that sled to a snowmobile guy in proctor ,minn. his name is Emerson Stahl,1 218 624-2183,e-mail I beleave it was $600.00
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