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-   -   Pantera 28 performance ??? (https://www.offshoreonly.com/forums/pantera/357730-pantera-28-performance.html)

gerrypantera 11-18-2018 05:49 PM
Pantera 28 performance ???
 
What numbers are you seeing with your setup and how does it handle im thinking about a re rig

cheers gerry

bigboat28 11-18-2018 09:14 PM
99 with 502 mags and 28 Bravo's that did 76mph

88 with 643 hp 555s and speed Master IIIs with 17.5 x 29s that has done 82 mph so far

gerrypantera 11-19-2018 04:40 PM
How did it handle with those setups any porpoise issues ?

bigboat28 11-19-2018 06:01 PM
What do you have?

bigboat28 11-19-2018 06:05 PM
The 99 did fine, the 88 with the speed Master and transmissions is very Stern heavy. You have to drive it and use tabs. It has a bow tank that last time out I filled with water and it rode lot better.

paul buckner 11-20-2018 11:58 AM
Originally Posted by gerrypantera (Post 4659817)
What numbers are you seeing with your setup and how does it handle im thinking about a re rig

cheers gerry
yes re rig it you know you want to and Gift me your cummins motors . I hope this is you Gerard!!

paul buckner 11-20-2018 12:03 PM
Originally Posted by bigboat28 (Post 4659968)
The 99 did fine, the 88 with the speed Master and transmissions is very Stern heavy. You have to drive it and use tabs. It has a bow tank that last time out I filled with water and it rode lot better.
How much water does your bow tank hold Big boat

mickeymcclgn 11-21-2018 10:57 AM
Originally Posted by paul buckner (Post 4660114)

How much water does your bow tank hold Big boat

my 28 has a 40 gallon ballast tank placed infront of the second bulkhead under the deck and filled from exhaust water. it’s night and day difference running with it filled in rough water. Settles down any flightiness when running at 75/80 in that kind of water.

paul buckner 11-21-2018 11:47 AM
Originally Posted by mickeymcclgn (Post 4660274)



my 28 has a 40 gallon ballast tank placed infront of the second bulkhead under the deck and filled from exhaust water. it’s night and day difference running with it filled in rough water. Settles down any flightiness when running at 75/80 in that kind of water.
Thanks for that information Mickey I thought it would be somewhere around that amount , are you single or twin motor .

Craney 11-21-2018 04:32 PM
Originally Posted by mickeymcclgn (Post 4660274)



my 28 has a 40 gallon ballast tank placed infront of the second bulkhead under the deck and filled from exhaust water. it’s night and day difference running with it filled in rough water. Settles down any flightiness when running at 75/80 in that kind of water.
Do you have twins or is it a single? Also do you fill the 40 gallons?

bigboat28 11-21-2018 06:36 PM
I thought mine was 60 per Pepe.

bigboat28 11-21-2018 06:37 PM
I have only filled it once and tried it and it did run a lot better, without it you need lots of tab.

mickeymcclgn 11-21-2018 09:24 PM
Originally Posted by paul buckner (Post 4660285)

Thanks for that information Mickey I thought it would be somewhere around that amount , are you single or twin motor .

mine is a single speedmaster so its alittle more heavy then a tradional bravo boat. The tank was not installed from the factory. I added it when I purchased the boat. Mine is also alittle on the heavier side for a single weighing in at 6200 lbs.

mickeymcclgn 11-21-2018 09:26 PM
Originally Posted by Craney (Post 4660320)
Do you have twins or is it a single? Also do you fill the 40 gallons?
i fill it in any rough water race we run, and I’ve filled it in some moderate chop if I feel that we can stay in hooked up better and stay closer on our 75mph number.

MMatt28 11-22-2018 01:20 PM
28 single 500 efi. Low 70s. Very balanced boat.

CooperS7777 12-15-2018 10:47 AM
Originally Posted by MMatt28 (Post 4660472)
28 single 500 efi. Low 70s. Very balanced boat.
Stock 500?

My 28 with carbed 598 has only seen 74 so far. Motor is heading to Saris this winter for top end, new cam and dyno, but Im thinking she's around 700hp. Its also a notched transom so I'm sure its down a couple MPH from a full hull boat.

onesickpantera 12-17-2018 04:49 PM
Originally Posted by CooperS7777 (Post 4663885)
Stock 500?

My 28 with carbed 598 has only seen 74 so far. Motor is heading to Saris this winter for top end, new cam and dyno, but Im thinking she's around 700hp. Its also a notched transom so I'm sure its down a couple MPH from a full hull boat.
Notched transom should add a little speed. The 28 is a great boat for it's size in rough water, but definitely no speed demon.

CooperS7777 12-18-2018 01:13 AM
Originally Posted by onesickpantera (Post 4664219)
Notched transom should add a little speed. The 28 is a great boat for it's size in rough water, but definitely no speed demon.
Curious as to why you think (or know) it would be faster? Also curious as to why they only ran the notched transom boats for two years; obviously if speed didn't suffer there was some other reason they decided to go back to a full length hull?

*edit - my boat was very poorly setup when I picked it up a few months ago; its been a process getting it sorted but were getting there slowly. The trouble I'm having now is dealing with lack of bow lift / blow out with the notched transom. Not debating or arguing - just trying to better educate myself!

bigboat28 12-18-2018 11:39 AM
The notch allows the drive to be mounted higher which supposedly equals more MPH.

bigboat28 12-18-2018 11:40 AM
Any pics of your boat?

CooperS7777 12-18-2018 01:19 PM
Originally Posted by bigboat28 (Post 4664354)
The notch allows the drive to be mounted higher which supposedly equals more MPH.
I’m still spacing my stock height bravo down further to prevent blow out. Now that it’s out of the water for the season I’ll be able to get some good measurements.

CooperS7777 12-18-2018 01:24 PM
https://cimg4.ibsrv.net/gimg/www.off...30692aca9.jpeg
Originally Posted by bigboat28 (Post 4664356)
Any pics of your boat?
https://cimg0.ibsrv.net/gimg/www.off...4358621b2.jpeg

bigboat28 12-18-2018 03:18 PM
Nice looking boat. Looks really warm in your pics. Lol

MMatt28 12-18-2018 05:02 PM
Originally Posted by CooperS7777 (Post 4663885)
Stock 500?

My 28 with carbed 598 has only seen 74 so far. Motor is heading to Saris this winter for top end, new cam and dyno, but Im thinking she's around 700hp. Its also a notched transom so I'm sure its down a couple MPH from a full hull boat.

Stock 500 EFI rebuilt (509ci).

[img]blob:https://www.offshoreonly.com/7588feaf-65a3-49a6-aacf-2f09e692d347[/img]

mickeymcclgn 12-19-2018 02:52 PM
Originally Posted by paul buckner (Post 4660285)

Thanks for that information Mickey I thought it would be somewhere around that amount , are you single or twin motor .
single engine, speedmaster boat.

mickeymcclgn 12-19-2018 02:54 PM
Originally Posted by Craney (Post 4660320)
Do you have twins or is it a single? Also do you fill the 40 gallons?

single speedmaster boat and if it’s rough I absolutely fill it to the brim. If it’s a 2/3 I’ll put about 1/2 in it (very non scientific measuring system, takes about 60 seconds to fill at 25lbs of water pressure so leave it open for 30 seconds close valve and go) then I have a switch to dump it.


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