<![CDATA[Tiara Yacht Owners Forum - Gas Engines/Transmissions]]> https://www.tiaraownersclub.com/forum/ Tue, 01 Sep 2026 14:18:44 +0000 MyBB <![CDATA[2000 3500 Open - Engine Sync Switch (7.4 MPI's)]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=9351 Mon, 01 Jun 2026 16:24:04 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=9351 <![CDATA[Tune up parts where to get them]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=9348 Sat, 23 May 2026 16:26:26 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=9348 <![CDATA[Repowering a 1992 3300 Open]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=9262 Mon, 16 Feb 2026 20:10:31 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=9262
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]]> <![CDATA[Upgrading to fuel injection]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=9245 Thu, 20 Nov 2025 00:45:27 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=9245 <![CDATA[ZF Transmission Noise]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=9215 Sun, 28 Sep 2025 17:29:28 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=9215 <![CDATA['93 TIARA 2900 OPEN ENGINE OVERHEAT WITH COOLANT/WATER POSSIBLY MIXED WITH OIL]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=9202 Sat, 06 Sep 2025 23:34:46 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=9202 I have a '93 Tiara Open located in Newport Beach, CA. I bought it three years ago. Paid $50k for it.  The boat was in great condition but with both 350 gas Crusader engines having 1600hrs. However, the previous owner kept all maintenance records and it was well maintained. I put about $20k into fixing areas that were old. Due to health issues, I decided to sell it but took "one more" trip to Catalina Island (26mi each way). You guessed it...half way back the port engine overheated. I quickly shut it off as I saw the temp gauge going up. I limped back to dock. There was coolant spray over the port engine that came from the overflow bottle.
After the engine cooled, I started the engine for a minute. Then when I went to start it again, there was a "clunk" and it wouldn't turn over.  I had two mechanics look at it. One checked the oil and said the oil level was high. He pumped out oil that also had coolant to maybe seawater in it. One said "new engine", the other was more optimistic saying possible head or engine rebuild. 
Does anyone have experience with a similar failure? If so, what was the finding? A cracked block was tossed out as was broken crank shaft? One said no way to know without pulling the engine from the boat.
Does anyone think the engine could be repaired without pulling the engine?
I appreciate any feedback you all have. 
Many thanks!]]> I have a '93 Tiara Open located in Newport Beach, CA. I bought it three years ago. Paid $50k for it.  The boat was in great condition but with both 350 gas Crusader engines having 1600hrs. However, the previous owner kept all maintenance records and it was well maintained. I put about $20k into fixing areas that were old. Due to health issues, I decided to sell it but took "one more" trip to Catalina Island (26mi each way). You guessed it...half way back the port engine overheated. I quickly shut it off as I saw the temp gauge going up. I limped back to dock. There was coolant spray over the port engine that came from the overflow bottle.
After the engine cooled, I started the engine for a minute. Then when I went to start it again, there was a "clunk" and it wouldn't turn over.  I had two mechanics look at it. One checked the oil and said the oil level was high. He pumped out oil that also had coolant to maybe seawater in it. One said "new engine", the other was more optimistic saying possible head or engine rebuild. 
Does anyone have experience with a similar failure? If so, what was the finding? A cracked block was tossed out as was broken crank shaft? One said no way to know without pulling the engine from the boat.
Does anyone think the engine could be repaired without pulling the engine?
I appreciate any feedback you all have. 
Many thanks!]]> <![CDATA[Fuel Filler Hose]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=9183 Sun, 17 Aug 2025 22:04:38 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=9183 <![CDATA[Raw fuel smell while running]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=9171 Fri, 08 Aug 2025 03:02:47 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=9171 <![CDATA[Engine shut off while running]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=9170 Fri, 08 Aug 2025 01:32:21 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=9170 Running at 3200 rpm for about 20 minutes - starboard engine shuts off.
No alarm no lights.
It would not start after that. Limped home on 1 engine.

Radio hand control reading low battery.
Had batteries checked all good
House and starter batteries on starboard side.

Any thoughts would be appreciated]]> Running at 3200 rpm for about 20 minutes - starboard engine shuts off.
No alarm no lights.
It would not start after that. Limped home on 1 engine.

Radio hand control reading low battery.
Had batteries checked all good
House and starter batteries on starboard side.

Any thoughts would be appreciated]]> <![CDATA[Shredded serpentine belt]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=9143 Thu, 10 Jul 2025 22:55:42 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=9143 <![CDATA[2003, 3100 with Twin Crusader 8.1L MPI Gas Engines]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=9126 Sun, 15 Jun 2025 00:34:03 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=9126 I'm new here, relatively new to bigger boats, and not a mechanic. The starboard engine on my boat is using more gas than the port engine, which is causing the boat to list to port. Starting with two full tanks late last year, the port tank is nearly 3/4 full whereas the starboard tank is just over 1/2 full. Both engines seem to run normally. There is no crossover valve to allow gas to flow from one tank to the other; each tank feeds the engine on the same side.

What are the most likely causes for the difference in how the two engines are using gas? I'm hoping it's an easy adjustment or fix.

Jim]]> I'm new here, relatively new to bigger boats, and not a mechanic. The starboard engine on my boat is using more gas than the port engine, which is causing the boat to list to port. Starting with two full tanks late last year, the port tank is nearly 3/4 full whereas the starboard tank is just over 1/2 full. Both engines seem to run normally. There is no crossover valve to allow gas to flow from one tank to the other; each tank feeds the engine on the same side.

What are the most likely causes for the difference in how the two engines are using gas? I'm hoping it's an easy adjustment or fix.

Jim]]> <![CDATA[2900 open - 454 mounts]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=9123 Fri, 13 Jun 2025 01:21:22 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=9123 Thanks for any input.]]> Thanks for any input.]]> <![CDATA[454 XLi Low voltage at electric fuel pump]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=9079 Sat, 29 Mar 2025 21:16:32 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=9079 <![CDATA[need exhaust t for 502xl engines]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=9066 Tue, 04 Mar 2025 11:26:06 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=9066 <![CDATA[Exhaust Noise]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=9017 Thu, 07 Nov 2024 16:55:00 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=9017
Older 31' Open with 454s with excessive exhaust noise > 2500 RPM.

Noticed it quiets down while making a turn to port while @ cruise.

The exhaust exits the sides instead of the stern and wonder if maybe it's the s/board muffler.

Any thoughts would be appreciated.]]>
Older 31' Open with 454s with excessive exhaust noise > 2500 RPM.

Noticed it quiets down while making a turn to port while @ cruise.

The exhaust exits the sides instead of the stern and wonder if maybe it's the s/board muffler.

Any thoughts would be appreciated.]]> <![CDATA[Overheating 7.4 freshwater side]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=8960 Thu, 01 Aug 2024 22:10:09 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=8960 <![CDATA[31 Coronet "red" check engine light]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=8955 Tue, 30 Jul 2024 12:16:47 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=8955 My mechanic is stump. Any suggestions and comments would be greatly appreciated.
Thanks
Rick]]> My mechanic is stump. Any suggestions and comments would be greatly appreciated.
Thanks
Rick]]> <![CDATA[Gas tank configuration]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=8950 Mon, 22 Jul 2024 01:28:33 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=8950 <![CDATA[Port slow to engage in gear]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=8941 Sun, 07 Jul 2024 13:49:25 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=8941
Slight wine now as well. 

Thoughts ? Having our mechanic do a diag after service if it doesn’t solve it. 

05 open 1200 hours well maintained / open checkbook boat.]]>
Slight wine now as well. 

Thoughts ? Having our mechanic do a diag after service if it doesn’t solve it. 

05 open 1200 hours well maintained / open checkbook boat.]]> <![CDATA[Repowering a Tiara 3100 Open with 2 outboards]]> https://www.tiaraownersclub.com/forum/showthread.php?tid=8871 Wed, 20 Mar 2024 14:08:57 +0000 https://www.tiaraownersclub.com/forum/showthread.php?tid=8871
I'm exploring the idea of repowering my Tiara 3100 with two outboard motors.
Maintenance for inboard motors can be very challenging in my area (Central America), so I'm looking for a solution that offers both reliability and ease of upkeep.

I was wondering if this would be feasible and any of you would have gone that route? I'd greatly appreciate any insights based on your experiences, as well as considerations regarding budget. Thank you!]]>
I'm exploring the idea of repowering my Tiara 3100 with two outboard motors.
Maintenance for inboard motors can be very challenging in my area (Central America), so I'm looking for a solution that offers both reliability and ease of upkeep.

I was wondering if this would be feasible and any of you would have gone that route? I'd greatly appreciate any insights based on your experiences, as well as considerations regarding budget. Thank you!]]>