Hey all, I currently own a b2, I bought it to learn on and am ready for a b1. A bunch of buddies have b1s and have problems almost every ride. I have zero problems with my b2. I am considering buying a b1 hull and installing my b2s 760 for power and reliability. To those who have done this, was it a straight forward bolt in process , or was significant fabrication involved? Any and all advice and info is appreciated. Thanks! Frank.
need advice on a b1 760 swap.
- Thread starter truth609
- Start date
Exhaust might be different(not sure if sfick 760 exhaust is the same as stock 701 exhaust) but other than that it'll fit right in.
701s rip hard setup right too....I wouldn't judge reliability of a b1 setup because of your friend's skis. Most of us here run 701s heavily modified with rarely any severe issues.
Someone else will have to chime in on if the 760 port timing and displacement is a decent gain over the 701 61x that comes in the blaster originally.. Believe the 760 is setup for more mid to top end power.
701s rip hard setup right too....I wouldn't judge reliability of a b1 setup because of your friend's skis. Most of us here run 701s heavily modified with rarely any severe issues.
Someone else will have to chime in on if the 760 port timing and displacement is a decent gain over the 701 61x that comes in the blaster originally.. Believe the 760 is setup for more mid to top end power.
I ride with 4 buddies who have blasters and every ride one of them has an issue. Generally related to exhaust separating/breaking. The power of their 701s is not an issue. I would not be opposed to running a 701, I just am concerned with reliability. No amount of power is fun when you can't ride your ski. Thanks!
BruceSki
Formerly Motoman25
- Location
- Long Island
The oem blaster 2 exhaust will not fit unless you do glasswork to a b1 hull.
My guess is your friends are running pro-Tec or Riva red pipes which are notorious for falling off.
Lots of red loctite and clean hardware when installing helps that.
My guess is your friends are running pro-Tec or Riva red pipes which are notorious for falling off.
Lots of red loctite and clean hardware when installing helps that.
Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
Plus these blasters are 20 years old. A lot depends on how they are maintained.
My B2 is 20 years old and I haven't had a single problem. That was my reasoning for considering the 760. My friends issues are with a riva red, protec and a factory b. So if you swap a 760, you have to use a b 1 pipe? How does that function with the b2 cyl porting? Also, I'd be forced to put on the problematic part from the b1?
BruceSki
Formerly Motoman25
- Location
- Long Island
It won't work with stock 61x exhaust. You need a 62t manifold pipe.
Factory b pipes work great as long as the manifold bolt holes aren't stripped.
Factory b pipes work great as long as the manifold bolt holes aren't stripped.
Thanks for all the help guys, please keep the info coming. I've read a bit on the 760 and all I've read says modifying it didn't produce any more power, that the stock exhaust produces great low/mid power. Would installing and aftermarket pipe designed for the 701 significantly reduce the power of the 760? Should the larger b2 pump be used?
Quinc
Buy a Superjet
- Location
- California
You are comparing a stock B2 to modified B1's. If you keep the B1 stock you also will not have any issues. The key to the a/m exhausts is spending the time to make sure everything is lined up properly and check on them before/during each ride until you have them perfect.
Quinc
Buy a Superjet
- Location
- California
I had constant issues with mine. Even snapped off bolts and had to have them machined out. But eventually you get it all figured out.
Quinc
Buy a Superjet
- Location
- California
If you can find one, a bpipe is best. Make sure it is for a blaster. Lots of info in the blaster section on the forum.
I have b1s and b2s... I have done the 760 swap .. I have the stock 760 in my b1 ,with a 701 factory b pipe..
The stock b2 pipe exits the rear ...the b1 goes toward the front.. My 701 Factory b pipe is mounted to the 760 engine the 760 cylinder has bigger exhaust mounting bolts and holes .I used the factory b 701 exhaust manifold drilled the holes bigger , got an 760 exhaust gasket and hogged out or ,opened exhaust header pipe to 760 size
I did put the 701 back in the b2 but has multiple problems figuring out the rear pipe for the 701 into the b2 ...just tried to keep from cutting or using adapters.. I found the 701 waveraider exhaust worked and I was able to use the stock waterbox and hose. Don't try without more info as I think I had to mix 2 pipes ..
The 760 trans plant is awesome, and I won't go back to 701
there is some tweaking that should be done ...
I have messed with the stock 44 mm carbs many times , we think the dual 38 mm carbs would give a better low end punch on the 760 ..if your riding in surf , also the stock 760 b2 has a 155 mm pump the b1 has the 144 mm pump ...they do sell a 148 mm pump that is direct bolt into b1 without any glass work..
Really depends if you want low end or top end .. You need to swap to the 760 ebox too ..You can pm me any questions
The stock b2 pipe exits the rear ...the b1 goes toward the front.. My 701 Factory b pipe is mounted to the 760 engine the 760 cylinder has bigger exhaust mounting bolts and holes .I used the factory b 701 exhaust manifold drilled the holes bigger , got an 760 exhaust gasket and hogged out or ,opened exhaust header pipe to 760 size
I did put the 701 back in the b2 but has multiple problems figuring out the rear pipe for the 701 into the b2 ...just tried to keep from cutting or using adapters.. I found the 701 waveraider exhaust worked and I was able to use the stock waterbox and hose. Don't try without more info as I think I had to mix 2 pipes ..
The 760 trans plant is awesome, and I won't go back to 701
there is some tweaking that should be done ...
I have messed with the stock 44 mm carbs many times , we think the dual 38 mm carbs would give a better low end punch on the 760 ..if your riding in surf , also the stock 760 b2 has a 155 mm pump the b1 has the 144 mm pump ...they do sell a 148 mm pump that is direct bolt into b1 without any glass work..
Really depends if you want low end or top end .. You need to swap to the 760 ebox too ..You can pm me any questions
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Did this job literally last month. Dump the 760 stock pipe and manifold no way that would ever fit. B pipe One prob that youll hit is the bolts for ex cyl mani are the next size up.so for 6 holes left right and bottom drill out the new b pipe manifold to suit org bolts on 760 cyl. The top 2 centre which are very tight to get to need to be resized down to m8. I went to jy local bolt where they have inserts that do this. These existing threads in the cyl needed to be slightly drilled and tapped before the inserts screwed in.
If you have a bare b1 hull perhaps think about stealing the muffler too and placing it in the back of the b1 hull. Other than that keep everything else stock and she will rip bottom and top end.
Jdog
If you have a bare b1 hull perhaps think about stealing the muffler too and placing it in the back of the b1 hull. Other than that keep everything else stock and she will rip bottom and top end.
Jdog