Straight Pipe Or Y Pipe
 

THINKING ABOUT CONVERTING TO Y PIPES TO CLEAN UP AND GET SOME SPACE IN THE ENGINES ROOM


ANY PROS AND CONS WOULD BE APPRECIATED!!

Do it!

Incredible sound at WOT, and easier to muffel, too.

We had Y-pipes on the 47' Apache we had and they definitely free up some space a bit... They will also make the boat much more quiet, but you will obviously lose a little horsepower as a result of the Y-pipe. If you have no noise restrictions / laws... I would say keep the straight pipes and let the big dog's breathe!!!:D :cool:

Had Y-pipes on a 41', and didn't lose any speed, because the pipes were 6" in diameter after the Y.
Later changed to CMI Big Tubes with straight pipes: very loud, and very ordinary. And the noise police hated them.

Zero pick up in speed/RPM's.

The sound of Merc 1000Sc's at 6200 RPM's throught Y pipes can only be equalled by Lambo 12's. Listen to FreezeFrame's 1991 Apache Year End Review and you'll see.

Y-Pipes all the way!! The 47 that's at my marina runs a Y-Pipe on the center motor and the sound is unmistakable! A higher pitch than the standard exhaust on the outside motors...plus, it cleans up the transom and engine room alot...good luck!

Y pipe all the way- the key is the larger diameter of the single pipe as ApachePete says.

One 6" diameter pipe will pass more volume than two 4" pipes.
(High school geom was good for something after all.)

Does BAM still have Y pipes and HUGE mufflers?

Y pipes on a twin really have a nice sound that is usually not offensive. But you can't do it on most Bravo set up. You need more space such as provided when you use transmissions. I think you'll find them mostly on Merc's packages which include Speedmasters from #3 thru #6...

triple 1200's/ #6's

Pete, actually BAM does not have anything at this moment. Doing a MAJOR re rig. We streched it 18", got rid of the boxes, new stringers, etc. I plan on running the Y pipe exhaust down in the transom notch. Also will put a silent choice type deal on it for out the transom. At the rate I am gong it will be another year at least.