Identify this tuned pipe

[Nitro boater]

guys what pipe is this and for what motor is it for?notice the band section

 

[jaxracer]

That's an old Aerotech "J" Pipe for a 40 size engine. Good running pipe with a lot of torque.

-Mitch

 

[Nitro boater]

Mitch will this work on my 7.5 kb outboard(.45)

 

[Nitro boater]

Mitch what should the lenght be from motor to the band section?

 

[moparbarn]

Mitch will this work on my 7.5 kb outboard(.45)

yes, i see them on a lot of .45 k&b's. good running pipe, from what i have seen & heard

 

[jaxracer]

Mitch will this work on my 7.5 kb outboard(.45)

Yeah it'll work great on your K&B. We used to run that combo a while back before we started running Rossi's and Nelsons. To be honest, I have no idea what pipe length we ran. Just put it on the boat, run it, and then keep shortening it by about 3/8" until the pipe until the boat lags pulling up out of the corner and then when that happens, pull it back out that last 3/8". That's usually a pretty good rule of thumb because every engine is different. A good x448, x450 or a 1450 were usually pretty good prop choices for us.

Hope this helps,

-Mitch

 

[Nitro boater]

Thx Mitch the first two props are octura,what prop is the 1450,Im currently running a 235 prather any idea if it will push a 240

 

[jaxracer]

The 1450 is an Octura as well. And I'm not really sure about the 240. I have never tried one on my setup before.

-Mitch