Twin Yamaha 115hp issue with higher RPM boat roll

[themunger]

I just had twin 115 4 stroke Yamahas installed on my Larson 23.8 which had twin mercs before this. For some reason when I get into the higher RPM's the boat starts to pitch and roll from one side to the other and the steering is very unresponsive. <br /><br />Is there something the installers may have forgotten?

 

[jk1162]

Re: Twin Yamaha 115hp issue with higher RPM boat roll

DID THEY PUT ON COUNTER ROTATION ENGINES OR 2 RIGHT HAND ENGINES?

 

[bigbrownbuku]

Re: Twin Yamaha 115hp issue with higher RPM boat roll

what kind of hull/boat munger? you may want to check the toe in measurement. center to center steering arms, then center to center aft edge of anti ventilation plate. it should differ by around an inch. when planing at cruising speed the wakes should meet around 70+ feet back.