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Thread: Can someone help a newbie?
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06-01-2015, 08:13 PM #1
- Join Date
- Jun 2015
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- Martinsville, IN
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- 6
Can someone help a newbie?
Hello all!
Like many others I'm new to this whole forum thing. I recently purchased a 92 650 sl 3 cylinder jet ski. I bought it for $100 knowing that it wasn't operational. I know, it was a silly move but I wanted a toy I could tinker with. The guy said he had it turning over last year but it wasn't getting spark. He did a compression check on all 3 cylinders. The outside ones had good compression and the center one had mediocre compression, not 100% on the numbers there. A friend and I started to tear into the motor. All 3 pistons and rings looked good, the cylinders looked good. Hopefully I can have some pics up tomorrow for you guys. We pulled the motor out and found the crank case had a crack in it. I'm assuming from nobody draining the water out of it? I'm pretty sure its a water cooled motor. I could be wrong lol. I guess what I'm trying to get at, is this ski worth saving? it needs a few hundred bucks in it, I could probably save some money and heartache by buying a complete motor but at the same time I could probably take that money and buy a running ski or something very close. Any help would be greatly appreciated. This guy just wants to hit the water!
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06-01-2015, 08:14 PM #2
- Join Date
- Jun 2015
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- Martinsville, IN
- Posts
- 6
Sorry! I bought it for $200 lol
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06-03-2015, 03:59 PM #3
- Join Date
- Apr 2012
- Location
- Georgia - Lake Lanier - near 6TH
- Posts
- 960
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New reman engine from SBT is $600.
http://www.shopsbt.com/polaris-jet-s...1994-1995.html
If you rebuild it yourself you may be able to just buy the busted parts off ebay and reuse much of the rest.
Full gasket set is $100, so if all other parts are good I'd figure $150 for carb kits (3), $100 for gaskets and find a case on ebay for $50 or so, and you're up to $500 invested.
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06-18-2015, 08:34 PM #4
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- Jun 2015
- Location
- Martinsville, IN
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- 6
So do you think I could get away with just replacing the crank and crank case and new gasket set? I think the carbs were just rebuilt a few years ago. The ski has newish looking stickers on it from a marine service center and the lines and hose clamps look new on the carbs. Sorry still don't have pics yet. Appreciate you taking the time to help me out.
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06-18-2015, 09:03 PM #5
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- Jun 2015
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- 13
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- 1
If you are putting a brand new block in it, might as well rebuild the carbs.
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06-18-2015, 09:35 PM #6
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- Jun 2015
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- Martinsville, IN
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06-18-2015, 09:44 PM #7
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06-18-2015, 09:47 PM #8
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- Jun 2015
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You might be able to get away with making a good engine with your existing crank, but have you inspected it to make sure it's indexed properly / still in good shape?
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06-18-2015, 09:57 PM #9
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- Jun 2015
- Location
- Martinsville, IN
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- 6
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06-18-2015, 09:59 PM #10
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- Jun 2015
- Location
- Martinsville, IN
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- 6
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