QC
Supreme Mariner
- Joined
- Mar 22, 2005
- Messages
- 22,783
John,<br /><br />I am helping a buddy out with a 2005 236Ssi Chaparral. It has the 5.7 320 bhp Duo-prop Volvo. Seems to me to be right in the middle between the ST1290-80 and the ST1610-120. I have helped this guy with the boat since new. It does not porpoise at all when empty, like when we tested it at delivery. It runs an honest 52 MPH GPS and can be trimmed out all the way (trim limit). However, when loaded, as you can imagine he has a little trouble with it porpoising at higher speeds. With the Duo-prop he has no hole shot issues. He is definitely a turn key and boat kinda guy. Does not want to play with adjustable tabs etc.<br /><br />With all of that said, I believe that the ST1290-80s would be sufficient. Keeps cost down and installation is a little simpler.<br /><br />Two questions: 1) Do you agree? 2) Have you any experience with that transom? It is in storage now, so I can't get a measurement off it easily. I plan to order immediately from Iboats after your confirmation.<br /><br />Oh, oh, are the blems a reasonable option? Simply previously installed units? Slightly marred? Still reasonably cosmetically OK? Ugly?<br /><br />Thanks