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  1. #1
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    701 motor how much power potential

    I have been tossing around the idea of doing an engine swap, my machine is a 93 all stock now but feel it needs much more power. I know several will say do a pipe and a head and it will wake up I am willing to believe this but my question is will a reliable mild mod 701 make 90hp+ or is it worth the money to do say a gp760 motor that bone stock makes 90hp? I have given thought to other motors as well I believe the 760 is the easiest swap so that would be my first thought. What is a good path give me your thoughts swap or mod stock?

  2. #2
    PWCToday.com Is My Home Away From Home teamzulu's Avatar
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    Re: 701 motor how much power potential

    If your looking for bottom end stick with the 701. If you want mid and top then the 760 would probably be the way to go. 93-95 blasters have one 44 mil carb and the 61X bottom and are 63hp. The 96 has two 38 mil carbs and 62T bottom and has 73hp. I have both but the skis have diff pipes, reeds, similar compression... And can't tell a huge diff if much.
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  3. #3
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    Re: 701 motor how much power potential

    Quote Originally Posted by teamzulu View Post
    If your looking for bottom end stick with the 701. If you want mid and top then the 760 would probably be the way to go. 93-95 blasters have one 44 mil carb and the 61X bottom and are 63hp. The 96 has two 38 mil carbs and 62T bottom and has 73hp. I have both but the skis have diff pipes, reeds, similar compression... And can't tell a huge diff if much.

    I have read many people say these same things but what I want to know is after you did the pipes reeds and head + other mods are these motors much stronger than my stock or are they just better. I feel like it is down 25+ hp stock. I like the idea of having more bottom so the 61x vs 62t bottom 701 motors I lean toward the stock 61x for sure but when you look at the 62t 760 from gp760 then your not starting with 73hp you are starting with 90 so maybe a pipe and head then give you 100+ that sounds like a real beast to me but like I say if I can stick with my 61x and make upgrades that will get me in the 90+hp range that is best of both worlds giving good bottom and making good top. What do you guys think I have no experence with this motor so I dont know what they are capable of?

  4. #4
    PWCToday.com Is My Home Away From Home teamzulu's Avatar
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    Re: 701 motor how much power potential

    I think the 760 is called a 64Y or 64T or something. If you have access to a 760 for dirt cheap or free guess I'd go that route. Otherwise I'd stick with the 701. They do have good bottom end when you throw on a factory B pipe or coffman or protec. The head for high compression. And a MSD Enhancer so you can turn up the RPM limit. The stock prop is pretty good for bottom end. But if it's beat up at all I'd replace that. You will get decent power out of that 1 44 mil carb and it's easier to tune so I'd stick with that. As for 90hp you should get that with pipe, head, reeds.

    My 93 rips pretty well on bottom end. Both my blasters basically go from 0-40 very fast and are set up for bottom. But my top speed is probably 40-45. Blasters not made for speed really, even mid is a waste because it porposes so bad.

    Use the search function. Or look down abut 20 posts.

    http://www.pwctoday.com/f101/b2-motor-b1-293791.html
    Last edited by teamzulu; 08-14-2010 at 10:18 PM.
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  5. #5
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    Re: 701 motor how much power potential

    My son has a 95 B1 w/stock motor single 44sbn and when we put a Pro-tec (@$200-250 used) Mach 1 pipe and open element flame arrestor it made a HUGE difference. Will probably do a higher comp head next and be happy with that. But a stock B1 vs a piped B1 is def night and day difference.
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  6. #6
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    Re: 701 motor how much power potential

    Quote Originally Posted by 56mulberry View Post
    My son has a 95 B1 w/stock motor single 44sbn and when we put a Pro-tec (@$200-250 used) Mach 1 pipe and open element flame arrestor it made a HUGE difference. Will probably do a higher comp head next and be happy with that. But a stock B1 vs a piped B1 is def night and day difference.

    Ok this was the sort of info I was looking to here. I have read a top loader intake is also a big improvement but I really did not see any point unless the motor made alot more power.

    I look forward to turning this thing into a little ripper

  7. #7
    PWCToday.com Is My Home Away From Home Yamabooeey's Avatar
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    Re: 701 motor how much power potential

    Copied and paste from Scottie Mac on your other thread. Do this and it'll be more than you can handle for awhile.

    Remove Oil Injection, add block off
    Factory B Pipe - limited or mod chamber will work
    ADA Girdled Head - 180 compression
    Flame Arrestor and Adaptor
    Rejet
    MSD Enhancer
    Hooker 10/16 Prop from Impros
    Protec, Riva or Worx intake - worx is best for hook up, Riva for speed
    Protec, Worx or Riva rideplate
    Last edited by Yamabooeey; 08-15-2010 at 02:41 AM.
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  8. #8
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    Re: 701 motor how much power potential

    How much horsepower should that setup be making

  9. #9
    PWCToday Regular Pstroud38's Avatar
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    Re: 701 motor how much power potential

    Quote Originally Posted by Yamabooeey View Post
    Copied and paste from Scottie Mac on your other thread. Do this and it'll be more than you can handle for awhile.

    Remove Oil Injection, add block off
    Factory B Pipe - limited or mod chamber will work
    ADA Girdled Head - 180 compression
    Flame Arrestor and Adaptor
    Rejet
    MSD Enhancer
    Hooker 10/16 Prop from Impros
    Protec, Riva or Worx intake - worx is best for hook up, Riva for speed
    Protec, Worx or Riva rideplate
    What hp should that be making?

  10. #10
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    Re: 701 motor how much power potential

    The 760 is making more HP because it has a bigger exhaust and dual 44mm carbs vs 38mm carbs and smaller exhaust. If you want you can bore your 701 out to 760(max bore 84mm) and add a dual 44mm intake manifold.
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