Go Back  Offshoreonly.com > Owners Forum > Scarab
average gph for cruising on a panther 29'6" with twin 454 >

average gph for cruising on a panther 29'6" with twin 454

Notices

average gph for cruising on a panther 29'6" with twin 454

Old 02-15-2013, 10:38 AM
  #1  
Registered
Thread Starter
 
Join Date: Sep 2012
Location: Oregon
Posts: 83
Likes: 0
Received 0 Likes on 0 Posts
Default average gph for cruising on a panther 29'6" with twin 454

I'm trying to get an idea of what kind of fuel consumption I will be using on my 86 panther with twin 380hp FI 454 mags.
Any input on similar setups would be great.


With a 150g tank, I am sure even at cruise I would be getting less than a gallon per mile?

Last edited by airbats801; 02-15-2013 at 10:58 AM.
airbats801 is offline  
Old 02-15-2013, 03:52 PM
  #2  
Registered
Platinum Member
iTrader: (1)
 
Join Date: Jul 2011
Location: Pittsburgh, PA
Posts: 237
Likes: 0
Received 2 Likes on 2 Posts
Default

I have a friend who had a scarab 300 with 454 365hp but they where carburated motors (quadrajets). Boat had TRS drives with 23P Mirage props and it seemed to cruise best around 3000-3200rpm wich was maybe 35-40 mph and it was realy easy on gas at that speed. I remember throwing 30gal of gas in it in the morning, cruising around stoping to swim a few times all day and still having more gas in the boat than before we added the 30gal. I dont know exactly but I would say he was geting easly 1.5 mpg proubably closer to 2 mpg. I do know from experience quadrajets can return great fuel milage aslong as you take it easy on the throtels. I have a boat with Merc 454 mag mpi 385hp motors and I think they are harder on fuel than the carburated motors. Even when trying I cant get 1mpg but then again the boat weighs proubably more than 13000 with fuel and gear wich is almost twice what a panther weighs. My point is I dont think you will get 2mpg but I would think 1.5 should not be a proublem at around 3000rpm
dandercam1 is offline  
Old 02-16-2013, 09:30 AM
  #3  
Registered
Thread Starter
 
Join Date: Sep 2012
Location: Oregon
Posts: 83
Likes: 0
Received 0 Likes on 0 Posts
Default

Thats great information. Thanks. 40gph is actually much better than I was hoping. I'm also running trs drives. THe broschure said the boat was 6400, which I assume is dry.

It's souonding more and more like I will have this boat out on the water a lot more than I thought this summer. Lots of river cruising trips, and the occasion fly by through portland lol.
airbats801 is offline  
Old 02-16-2013, 12:19 PM
  #4  
Platinum Member
Platinum Member
 
phughes69's Avatar
 
Join Date: Dec 2001
Location: St. Clair Shores, MI
Posts: 2,040
Received 99 Likes on 53 Posts
Default

From looking at a lot of boat reviews, I have observed that almost all gasoline boats get between 1-2 mpg at cruise speed. It does not matter if it is a 4 cylinder or a 1075.
phughes69 is offline  
Old 02-16-2013, 09:03 PM
  #5  
Registered
iTrader: (4)
 
Rookie's Avatar
 
Join Date: Jan 2003
Location: Grand Rapids, MI
Posts: 5,675
Received 1,188 Likes on 566 Posts
Default

When my Panther had twin Merc 425's I would get roughly 1mpg at ~3600RPM 47mph.
25" Quicksilver 3blades
Not so much now...
Rookie is online now  
Old 02-17-2013, 08:01 AM
  #6  
Registered
 
Join Date: Mar 2002
Location: Cardington Ohio
Posts: 4,155
Received 1,786 Likes on 703 Posts
Default Now thats...

Originally Posted by Rookie
Not so much now...
funny
I ran my old Sonic out of gas n Lake Erie one time after modifying the motors. Never even thought about it. Same trip I'd done a 100 times and always came home w/a 1/4 tank of fuel.
This time I was 20 mls form the trailer and down to an 1/8 of a tank.
Twin O/B Sonic is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.