Need a tuned pipe

[abx131]

I picked up a .61 (10cc) nitro motor and have been looking for a pipe for it. Will a pipe for a .65 or .67 work for this? I dont see too much out there for the .61 I dont know too much about the technical side of these. I do know the back pressure is required to get these motors to peak performance but I am not sure how calculated these pipes are from size to size.

[CFRACR]

Here you go..........

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXZ578&P=7

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXDR47&P=7

[abx131]

I appreciate that. Here is what I noticed. The second one lists it fits from 11cc to 15cc and states that translates to .61 to.91. Other soucres tell me .61 = 10cc and .67 =11cc. To restate my original question a pipe for a .65/.67 should fit a .61 with out any real trouble to the powerband? There seems to be some conflicting info from different sources about the conversion from cc's to decimal.

[Chris LaPanse]

Well, my handy calculator tells me that .61ci=9.9961cc. So, the sources that tell you .61=10cc are right, however, I doubt it would make a huge difference. If you're that conerned, just go with the first one (it says for .61-.65).

[CFRACR]

They are called "TUNE PIPES" because they can be tuned. The manufactor's make them to be used for a range. Its up to you to tune it!!!

Kinda like this OS has a .40 & Thunder Tiger has a .42. Same pipe to be used for both.

[abx131]

Like I said, I dont know too much about these things. All of your help is appreciated. Now about headers. My engine has the exhaust off the back and has a round flange right off the motor's case. I'm going to assume that I can use a silicone coupler to a pipe right from this flange meaning I don't need a header. Is this right???