Offshoreonly.com - Horsepower Loss do to Wet Exghaust

Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Q & A (https://www.offshoreonly.com/forums/general-q-20/)

- - Horsepower Loss do to Wet Exghaust (https://www.offshoreonly.com/forums/general-q/231579-horsepower-loss-do-wet-exghaust.html)

Quote:

Originally Posted by Rage (Post 3133130)

HP3 race engine valve train (except CC 929 valve springs and stock lifters) , heads additionally ported and bigger valves by J Valako, bored & stroked to 521ci all forged and balanced, cylinders bore knotched, HP3 Gen 2 cam and set up, HP3 timing, Raylar intake, throttle body bored by RV Morse Machine & blended by J Valako, HV oil pump, Dana Flow Torque exhaust with #5 risers, 3x18 oil cooler, PCM555 custom ECU recal by Dustin Whipple. When I saw Bob Lloyd's Full Throttle Marine wet exhaust dyno test (posted on the FTM web site) of the Dana Flow Torque exhaust with #4 risers on a stock 496 versus the CMI headers showed essentially the same performance increase over stock manifolds I was sold.

The design goal was max NA hp on 87 octane.

Sweet.
Valako's got a great rep, and Ray & Larry build great stuff.
What do you think its making?

UD

Quote:

Originally Posted by Uncle Dave (Post 3133219)

Sweet.
Valako's got a great rep, and Ray & Larry build great stuff.
What do you think its making?

UD

~600CSHP dry exhaust now but the cylinder to cylinder high rpm AFR spread needs to be tightened up a lot which is in the works and could provide significant further improvement.

I owe a huge amount of thanks for the guidance provided by Bob Lloyd of Full Throttle Marine, Dave Gilbreth, Innovation Marine, Jim Valako and on and on and the good parts available in the industry.