Does anyone here own a Tiara Coupe??

I have a 5800 Sovern 2014.
Helm window that activates up/down leaks. The weatherstripping I believe to be the cause. Any ideas on where to obtain new weatherstripping?
Thanks,
Thom
tmcpha4806@comcast.net

Today I did test runs on the current propellers that are on the boat. The current props are Michigan Wheel EPX 23x27 Nibral with a #6 Cup. When I purchased the boat, the original props that came on the boat when new were Michigan Wheel EPX 23x30 #7 cup, were under stored on the boat, however they were bent. I have those being repaired by the Prop Shop since no used in having bent props as spares, and I don’t know why one of the previous owners would have changed both the pitch and cup. Boat is 2007 3600 Open, QSB 5.9 380 hp, only 783 hours. 

So I thought I would do some test runs on the boat and get good data because I am thinking it best to put the original props that came on the boat back on it, figuring Tiara and Cummins new best when they chose them. Boat seems to run fine with these props, however would like others opinions.

I have attached all of the data on the current ones, hoping to get some insight from Tony and other experts on the forum.
I have my data with my props in the colored sections, and in the grey sections, I have the Tiara Performance Data they sent me for the original props.

I ran at all RPMs and measured, Furl burn, Boat Speed, Engine Load, and Engine Temps.
At all RPMs for the most part is burning less fuel, but of course the miles per hour is less at all RPMs and I assume it is because the pitch is 27 vs 30 and the cup is #6 vs #7.

It does go wide open to 3060 RPMs but the load is only 85%? 
Probably lower than what it should be, but maybe that is what the previous owner wanted.

I would be really interested in others opinions, on putting the original props back on, and should I expect my boat perfor,anc  to match the Tiara test data?

Thanks in advance, as I have read a lot of the knowledge on the forum.

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(08-03-2025, 07:07 PM)Roweje Wrote: Today I did test runs on the current propellers that are on the boat. The current props are Michigan Wheel EPX 23x27 Nibral with a #6 Cup. When I purchased the boat, the original props that came on the boat when new were Michigan Wheel EPX 23x30 #7 cup, were under stored on the boat, however they were bent. I have those being repaired by the Prop Shop since no used in having bent props as spares, and I don’t know why one of the previous owners would have changed both the pitch and cup. Boat is 2007 3600 Open, QSB 5.9 380 hp, only 783 hours. 

So I thought I would do some test runs on the boat and get good data because I am thinking it best to put the original props that came on the boat back on it, figuring Tiara and Cummins new best when they chose them. Boat seems to run fine with these props, however would like others opinions.

I have attached all of the data on the current ones, hoping to get some insight from Tony and other experts on the forum.
I have my data with my props in the colored sections, and in the grey sections, I have the Tiara Performance Data they sent me for the original props.

I ran at all RPMs and measured, Furl burn, Boat Speed, Engine Load, and Engine Temps.
At all RPMs for the most part is burning less fuel, but of course the miles per hour is less at all RPMs and I assume it is because the pitch is 27 vs 30 and the cup is #6 vs #7.

It does go wide open to 3060 RPMs but the load is only 85%? 
Probably lower than what it should be, but maybe that is what the previous owner wanted.

I would be really interested in others opinions, on putting the original props back on, and should I expect my boat performance to match the Tiara test data?

Thanks in advance, as I have read a lot of the knowledge on the forum.

I purchased a 1998 4000 Express and took possession last Monday in Freeport NY. Had the yard change oil and filters on both engines and generator and new raw water impellers for all. Ran the boat mount 160 Miles up into the Delaware Bay with the intention of getting to Annapolis to haul it and set it on a trailer to Nashville, TN. About 20 miles up the bay, started smelling rubber and opened the engine hatch and thick black rubber smelling smoke pours out. We wereand able to isolate the problem to the port engine which had been quickly  throttled back to idle. Ran the starboard at about 1600rpms and within an hour, smoke from the starboard. Limped into Hancock Harbor up the Cohansey River where they were able to pull and block the boat on a Saturday afternoon. Very impressed with the people and their helpfulness at Hancock.
3208 Cats with ZF V-drives and my understanding is a rubber damper lives between the engine and transmission and these have fallen apart. The engines have about 1600 hours and overall the boat performed well up to that point. During the trip we ran 100 miles the first day at 2200 rpms. The 2nd day went 44 miles at 1500 rpms and the last day were running at 1700 rpms when the rubber smell first started.
I would welcome any guidance on a company or individual who could perform what I'm sure is a major repair to split the Trans/V-drive from the engine to change out the defective rubber damper. I can leave the boat at Hancock if there is anyone in the New Jersey or Delaware area. My plan is to truck it to Nashville the week of 8-25. Finding someone to come to either location (Greenwich, NJ or Nashville) is my quest. If there's a point between Greenwich and Nashville the boat could be dropped, that could work too. Anyone who can point me in the right direction here would be my friend forever!
Ernie Jones
615-973-5463

Just brought this boat home 5 days ago. So much to learn. I wanted to pull the fiberglass helm panel forward. I saw the hinges at the bottom. At the top on each side there is a recessed area with 3/8’ nylock nuts.i thought those were supposed to be removed, however they just spin along with the bolt or stud. Thinking I’m not doing this correctly. Is there another method? What am I doing wrong? All help appreciated.
   Mike in Michigan

I am trying to prepare a budget for the refurbishing the following items on a 2000 Tiara 4100:

Replace the upholstery on the:
Bridge Deck Cushions and helm seat
Fishing Deck (cockpit) Cushions, bolsters and fold out seat

Interior Salon
Replace the upholstery on all dinette cushions 
replace the headliner
Replace the covering on the hull sides

Owner's Stateroom
Replace the fabric accent bolster that circles the stateroom just below the headliner
New comforter to match the accent bolster.  
Headliner

If anyone has done any or all of these items, would you please share with me what it cost? 
I am trying to get a "ballpark" estimate/budget.  

Thank you in advance for your responses.

I am looking to download or purchase an owner manual for 1987 3100 Open.

Also, any information on a replacement head.

Hey!
I need to replace a fuel fill hose on a 1993 3100 open. Any tips/tricks? Anyone know size of hose and length I’ll need
Thanks

I am the owner of a beloved Tiara 3100 Open.  I have had alternator problems and fount that one of the boards in the Charles external voltage regulator was bad.  I replaced the alternator with an internally regulated one and I don't know how to wire it properly bypassing the external regulator.  Can anyone help me.
Happy boating & thanks.

            Hi, long time lurker, just signed up.

Hoping someone has seen these "slides" window supports. Need to replace. Found something similar made by Perko, but awful reviews

Have 4 supporting 2 front sections of windshield on an older 2600 model. 

Of note is the "WB" embossed on the knob. 

Anyone en ounter these and have a source? Would Tiara still have something that is very old?

Not sure if pics are uploading normal yet