Bravo from TRS conversion, What is needed?
 

What do I need in addition to the following:?

1. bellhousing
2. coupler
3. transom plates/gimble housing
4. shift bracket
5. drive

I know that I have to fill the transom hole and relocate the engine. I already have a bravo style CMI exhaust system and bravo exhaust location cutouts in the transom, and the new style trim pump.

What else other than $$$$$ do I need to add to the list of hardware? Thanks for the HELP. Chris

Re: Bravo from TRS conversion, What is needed?
 

Only thing that i can think of would be some plumbing things. Does the Bravo have a water pickup that you will use or will you use a through hull. If using a through hull make sure to have the block off plate for the drive. I just finished this conversion also, good luck.

Re: Bravo from TRS conversion, What is needed?
 

new lower mount starters if your where top mount and to change the ring gear for the proper starter.also oil coolers if yours where in the bell houising.now would be a good time to install real motor plates if you have the stock ones.

Re: Bravo from TRS conversion, What is needed?
 

If you have thru hull water pickup.. dont block off the water that goes thru the drive. Plumb it so it will go back out thru the transom and spray on the drive like a shower. The bravo drive needs water flowing thru it as well as sprayed on it to survive or temps go sky high..'

Good luck with your project

Re: Bravo from TRS conversion, What is needed?
 

THANKS, I have the bottom mount starter allready. I plan on using the water pickup in the unit but I will also make a provision for cooling the exterior of the drive. What transom assembly should I look for the std or HD?

Re: Bravo from TRS conversion, What is needed?
 

I wouldnt go with anything but the HD transom unit. But then I had a standard one break at 80mph.. wouldnt wish that one on anyone..
If you go with an XZ/XR drive, make sure you have the proper gimble bearing and trim limit kit for the trim cylinders.

Re: Bravo from TRS conversion, What is needed?
 

If you don't want to go throught the hassle of the glass work for the transom I have a set of Mercury TRS to Bravo adapter plates the go between the gimble and transom.

Re: Bravo from TRS conversion, What is needed?
 

Stellings also makes a stand off box that adapts a TRS cut out to a bravo setup without glass work. I would go on and put hydraulic steering in with it. It is well worth the extra money.

Re: Bravo from TRS conversion, What is needed?
 

Cig3 how do theese plates work How much do you want for a set for 1 drive? Thanks, Chris

Re: Bravo from TRS conversion, What is needed?
 

The TRS adapters are made by Mercury. They simply bolt up to the existing TRS bolt pattern. Simple & clean. The best senario would be to fill in the transom or bolt on the stand-off boxes, as previously mentioned. Depends on your budget, what kind of speeds your after, etc... Also...If I were you, I would loose the "thru the hull bottom" water pick-up. Glass it in with many multiple layers of heavy weight fiberglass, such as 24 oz. Woven Roving or Biaxial or Triaxial glass. No coring, solid glass. Use Vinylester Resin, as a first choice, for its superior secondary bond characteristics. Grind area before and after. Sounds involved, but its quite easy. The thru-hull is probably in your engine compartment and easily accessible. One of the reasons the Bravo's are faster than TRS's, is due to the lack of thru-hull water sources, causing severe aeriation into the slipstream of the propellers. This combined with superior gearcase hydrodynamics, higher installed X-demensions, multibladed propellers, etc., will provide for a minimum of 10 m.p.h. increase in speed, with the same power. Minimum. Not to mention the lack of a power robbing transmission & the weight savings of the drive & transmission. Just my .02 :rolleyes: Ed

Re: Bravo from TRS conversion, What is needed?
 

10 mph? I would be surprised. Put a junked TRS back on, sell it all and buy that 2002 28' with a new 525 in it, fresh water only........
37 degrees in LG last night according to weather.com. Too cold too soon...............Hope the project is doing well.

Cheers

Re: Bravo from TRS conversion, What is needed?
 

10 mph? I would be surprised, lets hope so though. Put a junked TRS back on, sell it all and buy that 2002 28' with a new 525 in it, fresh water only........
37 degrees in LG last night according to weather.com. Too cold too soon...............Hope the project is doing well.

Cheers

Re: Bravo from TRS conversion, What is needed?
 

10 mph? I would be surprised, lets hope so though. Put a junked TRS back on, sell it all and buy that 2002 28' with a new 525 in it, fresh water only........
37 degrees in LG last night according to weather.com. Too cold too soon...............Hope the project is going well.

Cheers

Re: Bravo from TRS conversion, What is needed?
 

The water pickup is through the bottom of the hull not the orig transom mounted one. I may need to keep it because the X dim will be 18.5 so that I can use the standard exhaust cutouts with little or no modification and I am concerned about water pressure with the standard water pickups on the bravo, they are high on the drive. As far as speed goes I will be suprised if I gain more than 2 mph, I once ran against an identical boat but with 120 more hp and a bravo and easily passed him with the TRS boat. In theory it should free up 20hp and an inch or more of drive height netting about 2-4 mph. If I can resist the temptation to port the heads or stroke the motor while it is out it will make a good expirement.

Re: Bravo from TRS conversion, What is needed?
 

But that 28 is only $90,000...............

Re: Bravo from TRS conversion, What is needed?
 

My 24 excalibur with high x Bravo ran same speeds or better than other 24's I came accross that had 100hp more and trs setup!!

Re: Bravo from TRS conversion, What is needed?
 

I have yet to see a Bravo conversion boat go ANY faster then when it was a TRS boat. The TRS is a more hydrodynamic bullet that is why it does not need a nose cone tell a couple miles a hour more then the Bravo does. The Bravo's start to blow out much earlier then a TRS will. Ussually people when they do this conversion add power so it is hard to say what the real gains are if any but I would keep the TRS set up for what you are going to have to go trough, or give Konrad a call.

Jon

Re: Bravo from TRS conversion, What is needed?
 

Consider the Konrad option:

Bellhousing: Nope
Coupler: Nope
Transom plates/gimbal housing: Optional
Shift Bracket: Nope
Drive: Yes.

Fill transom: Nope
Relocate motor: Nope
Exhaust changes: Nope
New trim pump: Nope

Have your conversion done in a day or so, and still be boating yet this season: Priceless.

Cheers,
Brian

Re: Bravo from TRS conversion, What is needed?
 

To keep the TRS system I would have needed a drive, transom assembly, Merc2 tranny yoke and maybe the transmission because it did not break this time but i am sure it is ready to fail. If I already had the Borg Warner trans I would have kept the TRS or gone Konrad, I do not think the merc ll tranny will last another year or more behind 500hp without major overhaul. And If I were going to add the borg warner trans then I would also have to consider maybe a used SSM 5. Then If I had the SSM or Konrad I would want to add power, It is a never ending cycle.
Chris

Re: Bravo from TRS conversion, What is needed?
 

So far the Konrad 540 from TRS conversions have ranged between 4 and 8 mph velocity gains by just bolting on the system in boats running around the 80mph mark. some have gained 1.5mph with the cast in nose cone.

Some boats are dialed in better than others thus the variance.

Most of the bravo to konrad conversions have been in slower boats and have seen very little difference.

The Hong Kong police changed their interceptors from Bravo to Konrad for durability reasons. They were boats running about 70mph. They added 50 hp for each engine and stayed the same. I think we could get more out of the boat but they wanted to keep the same propellers.

Here is a shot of the interceptor:

Re: Bravo from TRS conversion, What is needed?
 

Ya but you are a freek of nature so what is your point :D :D :drink: :drink: :p :p

Re: Bravo from TRS conversion, What is needed?
 

No turning back now, The transom is filled