28 Speeds
 

What does a 28 run with the various engines? I've tried searching and haven't found much.

For example,

A single 500 hp vs 502 twins, etc.

What's it take to run 70, 80 in a single or twins.

Thanks.

I have a 1998 28 that had a single 509 blown 725 hp bravo one 1.5 spinning a herring 5 blade

top out at 5400rpm 87mph.

The blown motor has been replaced by a new 502 with similar specs a hp500 with a litlle bigger cam, approx. 550hp.

We have not splashed it but beleive that it should run approx 75-78 and get great fuel mileage

I have been a 28 with twins and it did not ride as well and topped out at 78....stock 502 mpi....too much wait for the length and the drives ride way too high.

this of course is with i/o

My 28 with twin 300 promax's runs 80

Thanks guys.

So it seems that 500 hp will break 70?

Also, twin big blocks are too rear-heavy then and a big single is best (or outoards if that's your deal:drink:)?

I would say a nice 650 HP BB ,,should get u in the mid 80's easy.

The one that raced back in 98ish did almost 95 !!!:eek:

That sounds pretty good.:eek:



So nobody knows though what a single HP500 will run?

U should be in the mid 80's for shure !!!!

Sounds optimistic....but I like it.:evilb:

It should do it ,,,with the right prop and maybe a shortry,,or extension box !!! 80-85,,the boat is not that heavy.
My old 33 was ~ 6400 # with twin BB and Imco's,fully loaded

If I get this boat I'm looking at it has no external hydraulic steering, so I might go for an exension box (they can have internal hyd seering right?). Otherwise I agree it shouldn't be too heavy at all, pretty light on the amenities.

NO,,,outside Hydraulic is what u need for extension box and otherwise !!!!

Its easy to install and...... well ~2500 + or used for less.:eek:

Oops, OK.

I'm thinking it'll be a worthwile upgrade....but first things first I gotta close the deal and get the boat "home".:party-smiley-004:

Everything over 65-70 MPH i would not want to drive it without Hydraulic steering anyways !!!!!

And yes ,,get her home !!! U will love it !!

My 28 AT runs 72 w/a 525. I seriously doubt a single 500 will run over 80.

everyday getting a little closer to putting this 502 approx 550 hp in my 28

I will keep you posted on end speed. hoping for 75-80 tops

ITS NOT A PP !!!! LOL

I forgot about the PP's superhuman(fiberglass) abilities:party-smiley-004:

See,,,u always forget that .LOL:grinser010::evilb:

That's why I'm sceptical.

What's the weight of your AT? What's the weight of PP with a single?

The PP is quite a bit lighter I believe, as it is slightly "less tall" (less freeboard) and pretty light on the ameneties.

I do think the PP is faster than the AT with similar power from what I can gather.:party-smiley-004:

It is faster then an AT for shure.
Don't lose sleep,,,80 + it will be .

All the PP are actually built like race boats with less strength,due to cabin. but the weight is pretty much the same as the race setup,,what the pleasure version has in seats and benches ,,the race version has in extra bulkheads.

So i think its pretty much plausible to get 80 with a HP 500 and a shorty on a 28 PP with the right prop .

So what is the right prop then?

The one I've got in the works has a 28 pitch 4 blade on it that I believe the dealer just "threw on".

U would need to run it and see where your at !!! RPM and Speed wise !!!
Then go from there.

Yes, but if someone else has something similar that would at least get me in the ball park.

I just spoke with the the dealer and there's a 26 pitch on there now rather than the 28.

I think mine weighs about 4800 lbs. The 28 PP is still a pretty big boat from what I can tell. A 29 Fountain(really 26 feet with a step) wont run 80 with a 500 EFI. I cant see how a straightbottom true 28 foot PP can...

Labbed 26P on my AT with 525 spins to 5200...right where it should be.

Yeah, I'd love to see 80 but that's the math I was doing as well. The 29 stepped fountains I think can see 76 with a HP500, but might be a bit heavier. If I can break 75 I'll be surprised/pleased (this is with a standard Bravo 1).

I'd think the AT to be a "fairly similar boat" (biggish 28, 24 degree straightbottom), so I think the 26p should be a good start for this summer then and I can fine tune as I go. Thanks.:drink:

I know a 29 Fountain with a HP 500 running 93 MPH !!!!!!!

Oh,,and i take bets on that .........so lets hear a # if u don't believe me !!!:eek:

Also the At has a lower X then the PP and the angle of the transom is 2 deg. less and on and on.
Its like comparing a Cig. with an Apache,,,,they are similar but not the same at all.

Yes, the 29 Fountains are like 5800 lbs. Good luck and have fun!

I dont even think the F1 29 Fountains ran over 90. My brother has a 29 Fountain with a 525 that has been rebuilt to over 600 HP. It runs low 80's. So, I do not believe you, but I am not a betting man either:drink:

I agree with the lower X on the AT. A 28 PP is probably faster then my AT...just not THAT much faster.

Trent Wyant ,,,F1 -29 Fountain ,,shoot out 93.2 MPH on record . With a 500 EFI and a 32 pitch prop @ 5400 RPM,,,dont know what gear ratio togh !!:eek:

But any ways,,,i think dialing in a 28 PP with all the right set up it can go 80 + with HP 500 !!!!:party-smiley-004:

I hope you're right and plan to find out.:drink:

My guess would be the 28 would run around 72-75 mph(fuel load people etc)with a labbed bravo prop,now with some serious tweaking extension boxes,herring 5-6 blade,bottom work,weight distribution etc,the boat could easily go in the 80s,as long as the boat wasn't laid up to heavy.My .02,good luck with your boat,Powerplays are awesome boats have owned several 33,you will love the ride

We'll see, it should be here next week. I'll have to get GPS first.....maybe it'll do 80 without it.:evilb:

where are you getting the boat from? Is it the one from Texas? 1995 hp500 repo blue interior

enjoy your new pp....the greatest boats ever made!!

That's the one (96 though).:evilb:

The HP500 is actually a 99 though, not the original power.

Shipper is picking it up Monday, so I'm getting pretty anxious.

Cool...congrats! Post some pics....

Thanks!

I'll post some on another site with a link (can't post pics here).:drink:

Congrats !!!!

Thanks.

And I hope your (optimistic) speed estimates are right.:drink: