Fuel consumption - Gladiator Zul / Sterlings
#11
Gladiators run best with the props turning in. We are running 4 blade bravo labbed 34"s. Most, im pretty sure all, have Mercury ITS which is like a stand-off box. We are also running sportmaster lowers. Ok heres the offer, we'll take the motors out and strip the Merc badges!

#12
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Joined: Feb 2006
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From: Lighthouse Point, Florida
Dan's boat is definatley the boat to buy and it's priced right. Don't forget 525EFI's run on 87 octane and Zul's need 93 octane. We bought 525EFI long blocks and they came with black valve covers. Bill Mazzoni has them and I'm sure he'd trade them for the blue valve covers from Dan's 525's. You can do something with the top of the fuel injection and you'd never know it was a Mercury motor.
Last edited by Lucky Strike Jr; 12-31-2007 at 10:27 PM.
#14
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From: Norway
Dan's boat is definatley the boat to buy and it's priced right. Don't forget 525EFI's run on 87 octane and Zul's need 93 octane. We bought 525EFI long blocks and they came with black valve covers. Bill Mazzoni has them and I'm sure he'd trade them for the blue valve covers from Dan's 525's. You can do something with the top of the fuel injection and you'd never know it was a Mercury motor.
Thanks!
Thats perfect. I was thinking about something like that myself, as the Mercruisers block should be regular long block made by General Motors (isn it?).
I will also speak to a friend of mine who has done this before.
Also thanks for letting me know about the fuel issue. Highest octane on marinas is 95 RON / equivalent to 87 Octane in US. If you need 98 RON +, you have to fill gas on regular gas stations using a) portable 20 litre gas tanks b) find a gas station by the sea. Both impossible to live with in the long run. I have done it with my two Merc 2.5 EFI SS's, since they require 98 RON.
How many hrs can 525's run before rebuild? And what kind of rebuild is necessarry? On Merc 2.5 EFI SS's you have to change rings and bearings every 120 hrs depending on leak down figures (and how hard you drive). But thats a 2 stroke 7,500 rpms engine (!).
Thanks again for all your help!

Cheeers, Toffen G
#15
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Joined: Feb 2006
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From: Lighthouse Point, Florida
Hi!
Thanks!
Thats perfect. I was thinking about something like that myself, as the Mercruisers block should be regular long block made by General Motors (isn it?).
I will also speak to a friend of mine who has done this before.
Also thanks for letting me know about the fuel issue. Highest octane on marinas is 95 RON / equivalent to 87 Octane in US. If you need 98 RON +, you have to fill gas on regular gas stations using a) portable 20 litre gas tanks b) find a gas station by the sea. Both impossible to live with in the long run. I have done it with my two Merc 2.5 EFI SS's, since they require 98 RON.
How many hrs can 525's run before rebuild? And what kind of rebuild is necessarry? On Merc 2.5 EFI SS's you have to change rings and bearings every 120 hrs depending on leak down figures (and how hard you drive). But thats a 2 stroke 7,500 rpms engine (!).
Thanks again for all your help!
Cheeers, Toffen G
Thanks!
Thats perfect. I was thinking about something like that myself, as the Mercruisers block should be regular long block made by General Motors (isn it?).
I will also speak to a friend of mine who has done this before.
Also thanks for letting me know about the fuel issue. Highest octane on marinas is 95 RON / equivalent to 87 Octane in US. If you need 98 RON +, you have to fill gas on regular gas stations using a) portable 20 litre gas tanks b) find a gas station by the sea. Both impossible to live with in the long run. I have done it with my two Merc 2.5 EFI SS's, since they require 98 RON.
How many hrs can 525's run before rebuild? And what kind of rebuild is necessarry? On Merc 2.5 EFI SS's you have to change rings and bearings every 120 hrs depending on leak down figures (and how hard you drive). But thats a 2 stroke 7,500 rpms engine (!).
Thanks again for all your help!

Cheeers, Toffen G
I'm guessing Dan's Gladiator burns somewhere around 40gph per motor WOT. That's what our F2 Top Gun burnt and it weighed about the same. If I remember correctly it only burnt like 15gph at 55mph. We ran our TG to Key West in '06 and it got approx. 1.6mpg running 75-80mph the whole way.
#16
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From: corydon in
toffen, did you own a couple of allisons? i think i remember you from the allison owners website, my previous boat was a xb2003 with a 225 promax ss. I recently purchased a gladiator with 800 hp zuls, dual 4b demon carbs on tunnel ram intake, 6 blade 29pitch herring props turning in, 113 gps. The gladiator is a blast to drive!!! acceleration will pin your head to the seat from 30 to 100 gps, and the zuls are great on fuel considering the hp.
cheers! dan.
cheers! dan.
#17
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From: Norway
Hi!
Thanks for all your help guys! Much appreciated.
I did not end up with Allison or Bullet, since neither of them is CE approved in Europe which implies lots of paperwork and USD.
I did end up with a twin set up on my old 1985 Phantom, just as it originally was set up for racing back in the 80-ties. Its a offshore hull often used in endurance races in UK and elsewere in Europe.
The twin setup increased the top speed with 10-12 mph, but the accelleration is just unbeliveable. If you cruise at 30 mph, you hit 80 mph in less than 3 seconds...
And since it is a former regatta boat, you can go in to 45-60 degree turns at 80 mph plus... just using the split foot trottle.
But since the coastline around us is pretty rough, I dream about a bigger boat, and Gladiator 36 is just the ticket. So it will happen one day. Just have to work on it!
Have a nice evening.
Cheeers from Norway, Toffen G
Thanks for all your help guys! Much appreciated.
I did not end up with Allison or Bullet, since neither of them is CE approved in Europe which implies lots of paperwork and USD.
I did end up with a twin set up on my old 1985 Phantom, just as it originally was set up for racing back in the 80-ties. Its a offshore hull often used in endurance races in UK and elsewere in Europe.
The twin setup increased the top speed with 10-12 mph, but the accelleration is just unbeliveable. If you cruise at 30 mph, you hit 80 mph in less than 3 seconds...
And since it is a former regatta boat, you can go in to 45-60 degree turns at 80 mph plus... just using the split foot trottle.But since the coastline around us is pretty rough, I dream about a bigger boat, and Gladiator 36 is just the ticket. So it will happen one day. Just have to work on it!
Have a nice evening.
Cheeers from Norway, Toffen G
#18
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From: Norway
Hi again!
Sorry for asking all these questions...
Just a thought. What about a Gladiator with twin 480 hp 6LY3 Yanmar diesels? I presume you have to use surface drives (MiniRex or Arnesons) and ZF gears.
I know that a Nortech 3900 sportboat made 75-78 mph with such a package. Low maintainance and low on fuel. In Norway the diesels is half the price as gas if used in boats (less tax). So its money to save, but the price for diesels and drives are high... And the question is .... how fast will a Gladiator go? Will it be boring
Cheeers, Toffen G
Sorry for asking all these questions...
Just a thought. What about a Gladiator with twin 480 hp 6LY3 Yanmar diesels? I presume you have to use surface drives (MiniRex or Arnesons) and ZF gears.
I know that a Nortech 3900 sportboat made 75-78 mph with such a package. Low maintainance and low on fuel. In Norway the diesels is half the price as gas if used in boats (less tax). So its money to save, but the price for diesels and drives are high... And the question is .... how fast will a Gladiator go? Will it be boring

Cheeers, Toffen G
#19
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Hi Toffen
Just wondered how efficienct your phantom is? how many GPH do you use?
I know i've asked you before if you're selling your phantom as i'm still looking for one. Seen 2 so far and still not happy with what i've seen.
Rick
Just wondered how efficienct your phantom is? how many GPH do you use?
I know i've asked you before if you're selling your phantom as i'm still looking for one. Seen 2 so far and still not happy with what i've seen.
Rick
Last edited by richard; 05-06-2008 at 12:23 PM.
#20
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Joined: Oct 2000
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From: Norway
Hi Richard,
I trust you are well.
I am now selling my Phantom 25 with twin Merc 2.5 EFI SS engines if you are still interested. I have sent you en email about this. My email is [email protected].
The boat is using 75 litre per hour running 50 mph.
Look forward to hearing back from you!
Cheeers, Toffen G
I trust you are well.
I am now selling my Phantom 25 with twin Merc 2.5 EFI SS engines if you are still interested. I have sent you en email about this. My email is [email protected].
The boat is using 75 litre per hour running 50 mph.
Look forward to hearing back from you!
Cheeers, Toffen G




