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Old 07-17-2015, 02:34 AM
  #5161  
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They are the same in distance.The spec 2 is just more knife edge, lightend.
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Old 07-17-2015, 02:37 AM
  #5162  
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Originally Posted by dameetz
I have an OS Speed XZB (not the spec 2).....it was my last engine before I quit offroad....now I m thinking of getting back and upon checking the engine, everything are fine, only the compression is loose. So if I want to rebuilt the engine will the newer B2101 piston, liner & conrod assembly compatible with the Speed XZB? Or is there any other alternative choice that can be use? Thanks in advance for the info.
This p/s with fit your engine and are a good price. http://www.ebay.com/itm/Mugen-Ninja-...c#ht_288wt_929 or http://www.ebay.com/itm/Mugen-Ninja-...e#ht_288wt_929

Last edited by kyosho28; 07-17-2015 at 03:08 AM.
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Old 07-18-2015, 03:15 AM
  #5163  
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I tried to order an XZB spec 11 here in Australia and my LHS told me they don't make them any more and replaced them with a B2101, i need it for a truggy and i no the B2101 is mainly a buggy motor from what i have read won't push a truggy around can anyone confirm.
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Old 07-18-2015, 06:18 AM
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Originally Posted by HSV427
I tried to order an XZB spec 11 here in Australia and my LHS told me they don't make them any more and replaced them with a B2101, i need it for a truggy and i no the B2101 is mainly a buggy motor from what i have read won't push a truggy around can anyone confirm.
Spec 2 is still around. Everything I've read says os will keep both engines.

In any case, the b2101 is awesome in truck. The spec 2 is a monster from bottom to top, and it can still be too much in truck for some tracks. The b2101 smooths things out just a touch. I use both motors in truck, and have raced a lot of others that love the b2101 in both buggy and truck.
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Old 07-18-2015, 07:07 AM
  #5165  
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I am about to break in my OS 21XZ-B VII motor, but before I do I wanted to get pipe recommendations. I have very limited knowledge when it comes to pairing engines and pipes. Previous to this OS I was running a Werks engine and pipe. I was considering reusing my werks pipe (2058) with this OS.
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Old 07-18-2015, 07:31 AM
  #5166  
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Originally Posted by kyosho28
Thanks....
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Old 07-18-2015, 08:40 AM
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Originally Posted by Kotton23
I am about to break in my OS 21XZ-B VII motor, but before I do I wanted to get pipe recommendations. I have very limited knowledge when it comes to pairing engines and pipes. Previous to this OS I was running a Werks engine and pipe. I was considering reusing my werks pipe (2058) with this OS.
Go ahead and use the Werks 2058. It's really good on this motor. I like the os 2090 pipe best, but the Werks is also really good.
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Old 07-18-2015, 03:57 PM
  #5168  
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Thanks for the response
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Old 07-18-2015, 07:22 PM
  #5169  
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Originally Posted by Kotton23
I am about to break in my OS 21XZ-B VII motor, but before I do I wanted to get pipe recommendations. I have very limited knowledge when it comes to pairing engines and pipes. Previous to this OS I was running a Werks engine and pipe. I was considering reusing my werks pipe (2058) with this OS.
I ran a Jammin jp pipe on my old blue xzb and it ran great. I got a brand new xzb bh and I going to run the same set up in my new car. try that everybody says the 2090 OS pipe is the one to run but I just couldn't come up with 200 bucks to buy it so i picked up a jp 4 and we will see for sure soon
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Old 08-01-2015, 11:56 AM
  #5170  
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My O.S. is due for a front bearing. Do you guys recommend the stock bearing or switch out to a nova 17011 dual shield?
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Old 08-02-2015, 10:17 PM
  #5171  
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Originally Posted by nv529
My O.S. is due for a front bearing. Do you guys recommend the stock bearing or switch out to a nova 17011 dual shield?
Stick with stock they are as good as any, OS doesn't need dual shield bearing.
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Old 11-07-2015, 02:20 PM
  #5172  
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hi there... i have a thought of buying the O.S. MAX 21XZ-B VER II...
do you recommend this engine ?
i am a racer.
what about the pipe? a friend of mine told me that my spare Novarossi 9901 super strong works fine with this motor.......
what do you think ?
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Old 11-07-2015, 03:53 PM
  #5173  
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Originally Posted by fotispao
hi there... i have a thought of buying the O.S. MAX 21XZ-B VER II...
do you recommend this engine ?
i am a racer.
what about the pipe? a friend of mine told me that my spare Novarossi 9901 super strong works fine with this motor.......
what do you think ?
Great engine. It needs an OS 2090 or 2058 works well too. Idk about a 9901
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Old 11-07-2015, 10:59 PM
  #5174  
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Originally Posted by Frank L
Great engine. It needs an OS 2090 or 2058 works well too. Idk about a 9901
i also have a go engines 2090....

maybe.? or not ?
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Old 11-08-2015, 06:17 AM
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Idk if it runs well or not but its not the same pipe.
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