28 Brave OSO Project
#102
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Joined: Oct 2005
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From: Fort Worth, TX
I'm not sure at all i just remember the old baja dealership here in Dallas once told me that baja used one of the old apache bottoms and i thought it was the old 302 Baja that used it. Don't hold me to it guys cause i'm not 100%.
#104
#105
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From: Mansfield, TX
I always thought the 28 Apache was similar in weight and hull efficiency w/Active Thunder 28(1999)??
Why would you estimate the top speed @ 61mph w/ 350magMPI's?? I have seen 72 gps and run 68-70 fully loaded w/400 hrs on my 350/300hp; although I do have the Stainles Marine exhaust systems....
I believe my boat weighs 5500 dry...what's the 28Apache weigh w/tsb's?
24 degree? Notch or pad??
Sorry, not trying highjack thread! Love to follow these 28 Apache threads; I see alot of similarities w/AT and APACHE's....(that's a compliment!)
Why would you estimate the top speed @ 61mph w/ 350magMPI's?? I have seen 72 gps and run 68-70 fully loaded w/400 hrs on my 350/300hp; although I do have the Stainles Marine exhaust systems....
I believe my boat weighs 5500 dry...what's the 28Apache weigh w/tsb's?
24 degree? Notch or pad??
Sorry, not trying highjack thread! Love to follow these 28 Apache threads; I see alot of similarities w/AT and APACHE's....(that's a compliment!)

I've done quite a bit more research on the GM marine crate 502 415hp and that seems to be the biggest bang for the buck. I figure since merc and marine power pretty much just use GM engines with their own accessories then I might as well get a GM marine complete long block with heads and switch over my accessories. I've already got the 850 holley, all I need is a new intake manifold. Should end up with a relatively cheap 500hp. Pretty sure the local builder could back this up with a 6 month warranty. Thanks to all that have recommend this route - took a little while, but I'm finally listening.
Last edited by TexomaPowerboater; 12-18-2008 at 12:30 PM.
#106
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From: Raleigh,NC & 1000 Islands,NY
Why not just buy the 500 EFI's for 15k? Those look great...looks can be decieving, but the guy has a good rep...
I would think for that $$ you could afford to have them freshened up and be set for many seasons....
Plus, you'd see upper 70's..right??
I would think for that $$ you could afford to have them freshened up and be set for many seasons....
Plus, you'd see upper 70's..right??
#107
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From: Mansfield, TX
Yep, they would be plenty of power, but they are still used engines.......about 420hours worth. IMO they are close to rebuild time. Last time I checked it was around $10K a piece to rebuild those 500EFI's I could pay the exact same price ($7,500 each) for a rebuilt blueprinted 502 with 0 hours straight from potter performance and probobly get a warranty out of it. I would be willing to do something like that. I also saw Ateco had some remanufactured engines that seem like a great bang for the buck http://www.offshoreonlyclassifieds.c...o26911-en.html I tentatively estimate around $15K to do the 502 crates ($11K for the engine and parts + $4k to put together, paint, and dyno). Where's Matt at - think thats a reasonable number with Leon doing all the work?
I'm sure the 500EFI is a better engine, but I doubt it would give me the kind of hours I'm looking for.
I'm sure the 500EFI is a better engine, but I doubt it would give me the kind of hours I'm looking for.
Last edited by TexomaPowerboater; 12-18-2008 at 03:55 PM.
#108
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From: Raleigh,NC & 1000 Islands,NY
Yep, they would be plenty of power, but they are still used engines.......about 420hours worth. IMO they are close to rebuild time. Last time I checked it was around $10K a piece to rebuild those 500EFI's I could pay the exact same price ($7,500 each) for a rebuilt blueprinted 502 with 0 hours straight from potter performance and probobly get a warranty out of it. I would be willing to do something like that. I also saw Ateco had some remanufactured engines that seem like a great bang for the buck http://www.offshoreonlyclassifieds.c...o26911-en.html I tentatively estimate around $15K to do the 502 crates ($11K for the engine and parts + $4k to put together, paint, and dyno). Where's Matt at - think thats a reasonable number with Leon doing all the work?
I'm sure the 500EFI is a better engine, but I doubt it would give me the kind of hours I'm looking for.
I'm sure the 500EFI is a better engine, but I doubt it would give me the kind of hours I'm looking for.
Andy, if you are looking for putting over 1000 hrs on motors maybe you should just buy some Yanmars!!LOL
BTW, What does it take to make a 28Apache go 80mph? I'm guessing 500hp per side??
#109
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From: Mansfield, TX
Yep, around 480-500hp IMO.
At $6-7.5K a pop I won't care all that much if they don't last 250 hours. At $15-17K a pop they better last 500+ hours.
Potter 502's http://www.offshoreonlyclassifieds.c...o26972-en.html
At $6-7.5K a pop I won't care all that much if they don't last 250 hours. At $15-17K a pop they better last 500+ hours.
Potter 502's http://www.offshoreonlyclassifieds.c...o26972-en.html
#110
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Joined: Mar 2003
Posts: 3,074
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From: Fort Worth, TX
Andy, you already know what I would do...
NEW 502 415HP marine crates. With the 850 and merlin dual plane they will make 450HP. Use your accessories!! Clean them up, paint them, whatever.
Do as much as you can yourself. I will help you dress them, get the intakes on, etc. All you then do is dyno them and install. Done deal. Lets get this thing in the water.
We can make this really painless, and you will know what you have because you are involved in everystep.
NEW 502 415HP marine crates. With the 850 and merlin dual plane they will make 450HP. Use your accessories!! Clean them up, paint them, whatever.
Do as much as you can yourself. I will help you dress them, get the intakes on, etc. All you then do is dyno them and install. Done deal. Lets get this thing in the water.
We can make this really painless, and you will know what you have because you are involved in everystep.


