Pipe Length

[glenng]

I need a starting point for pipe length. Boat is a 40" A.C. Lazer with a .67 CMB greenhead. Will be running 30-50% @ 4500 ft elevation. Pipe is a Mac's .67 muffeled # 1369. Thanks' in advance. Glenn

 

[Ray Sametz]

If the header telescopes into the pipe start at 11-1/4 to 11-1/2. 11-1/2 is a inch long then what I run at sea level B) B)

 

[glenng]

If the header telescopes into the pipe start at 11-1/4 to 11-1/2. 11-1/2 is a inch long then what I run at sea level B) B)

Thanks' Ray, Pipe & header do not telescope. Uncut AB header and uncut pipe= 12 7/8"-seemed way too long. Will cut some off of each. Thanks', Glenn

 

[gurugary]

If the header telescopes into the pipe start at 11-1/4 to 11-1/2. 11-1/2 is a inch long then what I run at sea level B) B)

Thanks' Ray, Pipe & header do not telescope. Uncut AB header and uncut pipe= 12 7/8"-seemed way too long. Will cut some off of each. Thanks', Glenn

I do not know what the sea level is in So. Indiana, but my .67 Picco runs great at 12"

 

[P THOMAS]

If the header telescopes into the pipe start at 11-1/4 to 11-1/2. 11-1/2 is a inch long then what I run at sea level B) B)

Thanks' Ray, Pipe & header do not telescope. Uncut AB header and uncut pipe= 12 7/8"-seemed way too long. Will cut some off of each. Thanks', Glenn

I do not know what the sea level is in So. Indiana, but my .67 Picco runs great at 12"

Yea we run about 12 " pipe too only 450' elevation 4500 big difference. Problally ok at 12" but may not pull a prop may have to go a size smaller. What prop you have for it?

 

[glenng]

If the header telescopes into the pipe start at 11-1/4 to 11-1/2. 11-1/2 is a inch long then what I run at sea level B) B)

Thanks' Ray, Pipe & header do not telescope. Uncut AB header and uncut pipe= 12 7/8"-seemed way too long. Will cut some off of each. Thanks', Glenn

I do not know what the sea level is in So. Indiana, but my .67 Picco runs great at 12"

Yea we run about 12 " pipe too only 450' elevation 4500 big difference. Problally ok at 12" but may not pull a prop may have to go a size smaller. What prop you have for it?

Hi Phil, I was going to try a x-455 on it first but I have smaller and larger props also. Thanks, Glenn