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Thread: SL650 or SL700?

  1. #1
    1996 SL900 & SL700 turk0004's Avatar
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    SL650 or SL700?

    I am considering purchasing either a 93 sl650 or a 96 sl700. Already have a 96 sl900 so I am leaning towards the sl700 since it's a domestic. Both need new engines. What do you guys think? 650 or the 700?

    Thanks

    Turk


  2. #2
    mr. happyfunbear tenjuna's Avatar
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    the 93 650 uses a smaller non modular pump, so if you are getting that you would want to consider upgrading that.

    I love my 93 650, but if the 700 is similar in price and does not need a lot more work, I would probably get that instead, just for the extra boost in power & handling.

  3. #3
    1996 SL900 & SL700 turk0004's Avatar
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    Didn't even think about the pumps. Does anyone know if I could fit a 900/1050 or even a 1200 in that sl700 hull?

  4. #4
    johnsonmtz's Avatar
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    I'd say the SL700. I recall during the Starved Nationals someone asking Randy which polaris engine he thought was the most reliable. He didn't even flinch to say the 700. His reasoning was that in regard to all physical portions of the engine (cases, heads, crank), these motors were the furthest from their mechanical limits. I don't recall which brands he referenced, but he said there are other manufacturers that design their engines to work at the absolute max limits of what the parts can handle. In his opinion, the parts in the 700 have the strength to generate far more power than what Polaris gets out of them. That's what he felt made this the most reliable engine.

    Yes, the domestics had some electrical issues, but from a sheer mechanical standpoint these are pretty tough motors. That leads to the big question: what blew on the one you're looking at? No oil? water ingestion? Plugged carb?

    The other thing to consider is only repairing 2 cylinders instead of 3.

    KJ

  5. #5
    rob2337's Avatar
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    The only thing I have to say is from my experience there are a lot more parts on ebay for the Fuji engines, and they seem to be cheaper.

    I was trying to find a crank on ebay for a 900 / 1050 engine a while ago, and all I found were Fuji cranks.

    Just something to think about.

  6. #6
    1996 SL900 & SL700 turk0004's Avatar
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    Quote Originally Posted by johnsonmtz View Post
    That leads to the big question: what blew on the one you're looking at? No oil? water ingestion? Plugged carb?

    The other thing to consider is only repairing 2 cylinders instead of 3.

    KJ
    Guy says that there is a broken rod but it didn't do any damage to the crankcase...we'll see when I go take a look at it.

  7. #7
    1996 SL900 & SL700 turk0004's Avatar
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    Quote Originally Posted by rob2337 View Post
    The only thing I have to say is from my experience there are a lot more parts on ebay for the Fuji engines, and they seem to be cheaper.

    I was trying to find a crank on ebay for a 900 / 1050 engine a while ago, and all I found were Fuji cranks.

    Just something to think about.
    Your right, tons of fuji parts on ebay, but the are quite a bit of 900/1050/1200 parts too. There is a guy on ebay that sells 900/1050 cranks like 1 week.

    Is the 700 actually just 2/3 of a 1050? Are the pistons/jugs/heads interchangeable?

  8. #8
    1996 SL900 & SL700 turk0004's Avatar
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    here's a pic of the ugliness.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  9. #9
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    SL 650 has 68 HP the SL 700 has 95 HP.

    93 650 has 146mm nonmodular jet pump, the 700 has the 148mm modular.

    700 is 2/3 of a 1050, and some parts do interchange.

    I LOVE the fact that the twin is 2/3 cost to do any rebuilding too.

  10. #10
    1996 SL900 & SL700 turk0004's Avatar
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    Quote Originally Posted by xlint89 View Post
    the 700 has the 148mm modular.
    Did the 96 sl700 come with the extended pump?

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