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Helping out a buddy set up his CMB Beta21, what pipe lengths and what pipes are working well with that motor in a rigger?
CMB Beta21 in a rigger.....
- Thread starter Don Ferrette
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The cmb 21 nitro pipe works good on mine at 8 to 8 1/4. I've had to run it a little on the long side as the summer heats up.
The pipe is real close to the 3280, so you could run that at about the same length. I know other guys run the 3280 pipe with good luck.
The pipe is real close to the 3280, so you could run that at about the same length. I know other guys run the 3280 pipe with good luck.
Bradley Maglinger
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8.25
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Scott Bouchie's pipe's work really good also.
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Don, I have ran mine between 7 5/8 to 8 1/4.
As always....depends on your load and how good the air is.
8 is a good place to start.
Forgot to add, pipe I use is CMB nitro pipe.
As always....depends on your load and how good the air is.
8 is a good place to start.
Forgot to add, pipe I use is CMB nitro pipe.
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Thanks all, this gives us something to go on. Been a while since I've run a 21.....
LarryConrad
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AB 21 fat pipe at 8” in my little SGX-ONE breaking in the engine. Weather turned unfavorable for boats in my neck of the woods before I got a chance to start leaning on the needle a bit and really dialing it in.
BobBonahoom
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Was running a Bouchie pipe at 8" with my 21 Beta up north, but had to move to 8.25" last summer in Hunstville.
