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Repowering 253 Convincor
- Thread starter Nick616
- Start date
Hack
Well-known member
That's pretty!!!!Engine is in:
Looks like the same S-pipe that shop got from Mercury for mine - now they just need to cut it apart for the 2 elbows to make it fit.
The stock is 12" drop and I only need 8" . . . .
Gimme Fuel
Well-known member
Glad to hear! Can't wait for the results! Looks like they did a pretty clean rigging job for the new wiring.
Got out for a nice ride from Holland to Grand Haven - amazingly not too cold 
Lake was flat.
No good performance numbers yet, got 57 GPS, but the boat was a little full . .. .
Approval from my daughter and 4 German exchange students we took for a ride:
Holland Channel:
Grand Haven Channel:
Managed to pull right up to board walk and the girls got off to get Pronto Pups!
Lake was flat.
No good performance numbers yet, got 57 GPS, but the boat was a little full . .. .
Approval from my daughter and 4 German exchange students we took for a ride:
Holland Channel:
Grand Haven Channel:
Managed to pull right up to board walk and the girls got off to get Pronto Pups!
Not the same without the catwalk!Good Luck with it!
Yeah - really looks different. Pier is not planned to be rebuilt until late this summer before they can even start putting the catwalk back.
Hopefully no one will run their boat onto the pier expecting the lights from the catwalk . . .
Hack
Well-known member
Wow!Stopped by to check on status of boat:
Here's what I saw when I pulled up
(
What sort of mounting system did they use to put the two jetski's on the bow???
Wow!
What sort of mounting system did they use to put the two jetski's on the bow???
LOL
Too Funny - wish I had as smart of a comeback . . . .
Hack
Well-known member
If you don't mind sharing the costs for the install (engine/rigging/etc), and who did it, I'd appreciate it. If you don't want to post the numbers in an open forum, send me a PM. I know all about 'cost overruns'. I did a complete resto-mod on a 76 CJ5...
An engine upgrade is something that my 95 Persuarder 219 might have in it's future. And I'd like to go MPI.
An engine upgrade is something that my 95 Persuarder 219 might have in it's future. And I'd like to go MPI.
I will probably do a little of both once I get the final numbers . . I'm hoping its reasonably close to the estimate, but I did add a Smart Craft Tach ( which I'm liking ) and I know they had more time than expected getting all the wiring re-done.
"Final" Cost
Work was done by Advantage Marine in Zeeland MI - great to work with and did a nice job.
Ended up around $20,000 including:
CPO 8.2L HO ( 430 hp ).
New smartcraft tach ( best $300 spent ) shows fuel consumption in gal/hr which I sometimes don't want to know . . . will also display any alarms / warnings so you don't have to guess when the system beeps at you.
Digital to Analog converter to hook up all analog gauges to Smartcraft system.
New - S-pipe for exhaust
Bunches of connectors / cables / junction boxes.
They did bill me quite a bit less on labor than they actually had - but I think a lot of their time was spent figuring out how to wire / hook up the smartcraft - so it should go a lot faster for them the next time.
Work was done by Advantage Marine in Zeeland MI - great to work with and did a nice job.
Ended up around $20,000 including:
CPO 8.2L HO ( 430 hp ).
New smartcraft tach ( best $300 spent ) shows fuel consumption in gal/hr which I sometimes don't want to know . . . will also display any alarms / warnings so you don't have to guess when the system beeps at you.
Digital to Analog converter to hook up all analog gauges to Smartcraft system.
New - S-pipe for exhaust
Bunches of connectors / cables / junction boxes.
They did bill me quite a bit less on labor than they actually had - but I think a lot of their time was spent figuring out how to wire / hook up the smartcraft - so it should go a lot faster for them the next time.
Initial Impressions
So I haven't really had the time ( and mostly appropriate weather ) to get much time on the new motor.
Right now running the hydromotive 23P prop that came with the boat. Top GPS speed has been 57-58 mph at 4800 ish rpm with 3 people. Haven't had a chance to dial in trim. . .
I'm not overly impressed with the hydromotive prop. Maybe I need to get used to it - coming up on plane it feels like its ready to blow out just as the boat levels out on plane - rpm's rapidly increase and I need to throttle back pretty hard.
I did blow it out making a harder than normal turn at a relatively slow speed - really did not expect that, drive was down all the way.
Hopefully the weather will cooperate soon and I can get a better feel for the prop.
So I haven't really had the time ( and mostly appropriate weather ) to get much time on the new motor.
Right now running the hydromotive 23P prop that came with the boat. Top GPS speed has been 57-58 mph at 4800 ish rpm with 3 people. Haven't had a chance to dial in trim. . .
I'm not overly impressed with the hydromotive prop. Maybe I need to get used to it - coming up on plane it feels like its ready to blow out just as the boat levels out on plane - rpm's rapidly increase and I need to throttle back pretty hard.
I did blow it out making a harder than normal turn at a relatively slow speed - really did not expect that, drive was down all the way.
Hopefully the weather will cooperate soon and I can get a better feel for the prop.
Gimme Fuel
Well-known member
That prop likes trim as it really doesn't have much cupping, Usually looking at the gauge it liked to have the needle straight up or a little past. Somewhere between 50-75% on gauge anyways. I never blew that prop out with the big motor but I eased it out of the hole as well, and that was even the prop I used, albeit at 6300 rpm haha. That many extra rpm completely changes how a prop acted, probably caused it to make much more lift. Start trimming until a bit at a time as you get a feel for how the boat reacts.
If you are at 4800 rpm without even trimming then I am going to venture that prop will end up being small. With the stock 502 MPI that boat had a Bravo I 24p prop and ran 67 MPH GPS no matter the load for reference but never really got on the pad or truly aired out. The old Mach Sterndriver round ear props were also a decent all-around prop on that hull I found.
If you are at 4800 rpm without even trimming then I am going to venture that prop will end up being small. With the stock 502 MPI that boat had a Bravo I 24p prop and ran 67 MPH GPS no matter the load for reference but never really got on the pad or truly aired out. The old Mach Sterndriver round ear props were also a decent all-around prop on that hull I found.