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Topaz Riptide re-power

Old 12-10-2017, 06:27 AM
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Default Topaz Riptide re-power

Well after much searching with “10 foot itis”, and coming to the conclusion that the boat I have does all I want I pulled the trigger at the FLIBS to repower with the new Cat C7.1 acert motors. I spent a lot of time researching it and talking to their engineers and a couple of early owners and came away with enough of a comfort level to take the next step. While my present motors have fairly low hours they are also low HP which means with 4-5 big guys, a keg, full fuel, ice, tackle etc.....I had a 21-22kt cruise at 2300 rpm. Pushing it up to 2600 would get me 24kts but it also required a 80% plus load factor. No bueno. The best fit for me was to run it to Gregory Poole/Jarrett Bay and have them do most of the work. Got there last week hopefully the old engines will come out this week. Stay tuned and feel free to chime in suggestions of anything I haven’t thought of while the engines are out. Some advantages to the new power:

* going from 385hp to 507 hp per side
* galvanically neutral- no more zincs
* 250 hour service intervals
* 45% quieter at cruise
* 3000 warranty
* 1000 hour belt service
* same weight and dimensions as present
* Tier 3 EPA compliant
* 30-32 Kt cruise projected at 2400 with a 65% load

More to follow.......
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Old 12-10-2017, 06:56 AM
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I am speechless with the both the engine choice and who you chose to do the work. If there was something more then 100% perfect I think you have it.
Maybe move this to the main boating section (a lot more views there).
KR
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Old 12-10-2017, 08:08 AM
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That'll be a hell of an upgrade
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Old 12-10-2017, 09:16 AM
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Originally Posted by keith r View Post
I am speechless with the both the engine choice and who you chose to do the work. If there was something more then 100% perfect I think you have it.
Maybe move this to the main boating section (a lot more views there).
KR
Thanks, the folks at CAT are as excited as I am. For us it’s truly a game changer as we have arguably the longest run to deep water on the east coast(90nm) and being able to shave some time off will be awesome. Plus the noise of the old engines was tiresome at cruise. I spent a good bit of time on the Pantropic Cat corporate test boat in FTL and was simply blown away. Headed back up Tuesday. Thought about putting it in the boating forum but I didn’t want to get into the “ shouldhaveboughtaFreeman” conversations.
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Old 12-10-2017, 09:36 AM
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what make is the test boat? Glasstech
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Old 12-10-2017, 12:25 PM
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Originally Posted by Bay boat101 View Post
what make is the test boat? Glasstech
Correct....36’ Glasstech, I think hull #7. Good eye.
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Old 12-10-2017, 03:44 PM
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Love those Topaz hulls... your new engines will make it even better.
The engine room on that glasstech is impressive.
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Old 12-12-2017, 10:53 AM
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Looking forward to seeing how this turns out
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Old 12-16-2017, 07:17 AM
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Default Topaz

Just joined the topaz family always loved those boats can’t believe I’v got one now so far so good
Great choice for power just poking around to see any other topaz owners good luck with your repowering
Fishman
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Old 12-17-2017, 04:17 PM
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Should be a great match! Looking forward to seeing actual numbers.
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Old 12-18-2017, 08:51 PM
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Subscribed. Joined the Topaz family myself this year. Love the boats and looking forward to hear your final results.





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Old 12-21-2017, 12:50 AM
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Very cool indeed! Beautiful topaz you have there!
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Old 12-21-2017, 07:47 AM
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Suscribed
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Old 12-28-2017, 01:41 PM
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One step closer, new engines prepped, new transmissions mated, hoses run,they’ll fire them up next week. Finally starting to get excited.
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Old 12-28-2017, 02:05 PM
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not sure your engine room access, but you might want to consider adding some rhino lining to the oil pans so you never have to worry about a rusty oil pan and keeping those things painted in any boat bilge is usually a PITA. Just a thought since it's easier to do while the engines are out of the boat.
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Old 12-31-2017, 01:09 PM
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Originally Posted by Sailor View Post
not sure your engine room access, but you might want to consider adding some rhino lining to the oil pans so you never have to worry about a rusty oil pan and keeping those things painted in any boat bilge is usually a PITA. Just a thought since it's easier to do while the engines are out of the boat.
Thanks Sailor! My engine room stays incredibly dry as there is a bilge tunnel but Thanks for the thought.

With the crazy weather I got the new teak helm piece close to done to cover the old gauge holes. Had some material left over from the covering boards so it worked out perfect.
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Old 01-02-2018, 11:20 AM
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Default Topaz 36 express

Couple more pics we all need winter eye candy right about now!!!!
Stay warm
Fishman94


Got teak ?

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Old 01-03-2018, 10:52 AM
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Totally exciting. Are the old engines out? Wavrider is repowering a 36 bertram moppie on the boating forum. Avidly sub'd to both projects!

im sure i dont need to tell you this ... now's your chance to replace all those impossible to reach things ... maybe a transducer that's perfectly placed in the hull for clean water but happens to be directly under the port engine?...upgrade to a brand new chirp. Maybe re-bed all your thru-hulls while you have the room to work? Or an old holding tank that would be difficult/impossible to remove with engines in place? Or add a new saddle tank for extra fuel/fresh water? Do it now while they're out. And paint that engine room/bilge white so you can easily spot any issues immediately. i actually leave those white oil-absorb mats under each engine as well.

Lots and lots of pics please ... it was 6 degrees F this morning here in the northeast.
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Old 01-03-2018, 11:36 AM
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Originally Posted by peterg45 View Post
Totally exciting. Are the old engines out? Wavrider is repowering a 36 bertram moppie on the boating forum. Avidly sub'd to both projects!

im sure i dont need to tell you this ... now's your chance to replace all those impossible to reach things ... maybe a transducer that's perfectly placed in the hull for clean water but happens to be directly under the port engine?...upgrade to a brand new chirp. Maybe re-bed all your thru-hulls while you have the room to work? Or an old holding tank that would be difficult/impossible to remove with engines in place? Or add a new saddle tank for extra fuel/fresh water? Do it now while they're out. And paint that engine room/bilge white so you can easily spot any issues immediately. i actually leave those white oil-absorb mats under each engine as well.

Lots and lots of pics please ... it was 6 degrees F this morning here in the northeast.
Thanks....they actually moved the boat inside today to get back ahead. Weather in the Mid -Atlantic has been a challenge as well. I had just redone all of the electronics last year with 3 7600 series garmins/ chirp B275 etc....so good to go there. Just found out last week that the Cat MFD's will interface with all of the Garmins so the tower machine will act as a repeater with engine info.(WIN!) I am going to paint the engine room, replace Racors, yank the hot water heater, etc....fire away with anything though. The guys at Jarrett Bay have been good about suggestions also which helps. If you have never checked one out, the Topaz is a remarkably well built and laid out boat. I would put their wiring second only to Cabo. Cheers!
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Old 01-03-2018, 12:27 PM
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Can't wait to see how this turns out. We had a 37 and came to the same conclusion you did - you can spend a lot more money and still end up with a lot less boat. Best of luck to you!

No more zincs is a dream come true. What about the genset - still have to deal with that one?

And good idea on replacing the hot water heater!!
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