[Tiara Open] 1981 Tiara Transmissions - Printable Version +- Tiara Yacht Owners Forum (https://www.tiaraownersclub.com/forum) +-- Forum: Tiara Yachts Discussion Forum (https://www.tiaraownersclub.com/forum/forumdisplay.php?fid=6) +--- Forum: Gas Engines/Transmissions (https://www.tiaraownersclub.com/forum/forumdisplay.php?fid=26) +--- Thread: [Tiara Open] 1981 Tiara Transmissions (/showthread.php?tid=7647)

1981 Tiara Transmissions - rbutler1178 - 06-03-2021 Does anybody know what gear ration on the velvet drives were in 1981? I have a 1981 with 454 crusaders thats not getting the right rpms. I suspect the previous owner changed the transmissions putting in the wrong gear ratio's I also believe he tried to compensate with changing the pitch on the props. I pulled the props and I  have 18x19 and I am only turning 3500 rpms at 24mph. Something is obviously wrong. So, does anyone know what the right tranny and prop size is for the 1981 3100 w T454's? Thanks 1981 Tiara Transmissions - Misdirection - 06-04-2021 If you contact Tiara customer support and provide your HIN, they should be able to tell you what it left the factory with. [Only registered and activated users can see links Click here to register] Sent from my SM-A505U using Tapatalk RE: 1981 Tiara Transmissions - rbutler1178 - 06-09-2021 I did but they could only give me the general specs for that boat. They could not give me detailed info with my VIN. I was hopeing they would have the build sheet but, no luck.