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HAVASU DCB
07-24-2002, 07:33 AM
My 18' Spectra gets shitty mileage. I can go from bluewater up to the dam and by the time I am at the no wake zone back at bluewater I am out of gas. Its a 20 gallon tank. Is this right?normal?
just a bbc,berk.
1quickjet
07-24-2002, 05:03 PM
HavasuDCB, That is actually not too bad. I beleive the strip is 17 (?) miles. So you are going roughly 34 miles on twenty gallons. From my experience it is average for a jet. My 19' Eliminator sprint had BBF, two 660's, and twenty gallons worth of fuel. It wouldn't do that. It would barely make it to roadrunner and back to bluewater. However, my bigger, heavier cruiser (Advantage 20.5 Classic) has a 454, tight pump, 850 Holley DP and will get to the dam and back on about 10-12 gallons.
It depends a lot on how it is driven. My cruiser is just that, cruisin' most of the time (occasionally open it up). Whereas the 19' was balls out. It also depends on carb cfm and pump efficiency.
old rigger
07-24-2002, 05:06 PM
I think you got a problem.
Parker strip is only 12 miles long. I'd be checking your carb, or your heavy right foot!
NorCal Gameshow
07-24-2002, 09:27 PM
are you using octane booster if you're not it might help...do you have the ls6 bbc?
HOSS
07-25-2002, 05:35 AM
I think your pump is toast!
timitunnel
07-25-2002, 06:08 AM
Put a bigger fuel tank in. And dont smile so much it causes drag.
HAVASU DCB
07-25-2002, 07:19 AM
Hoss,
Good call the pump is junk. It is being rebuilt right now.
058
07-25-2002, 08:33 AM
Buy a V-drive, it will use half the fuel that jet does.
NorCal Gameshow
07-25-2002, 08:35 AM
DCB, what rpm's did you max out on with the bad pump and "a" impeller ?
HAVASU DCB
07-25-2002, 12:41 PM
norcal,
I run it pretty hard! to like 5300 but I don't think it made any power or speed over 4800. What shoud full throttle be. I know on the DCB it is like 5500. But thats a prop. The spectra is way more fun to drive.
NorCal Gameshow
07-26-2002, 06:26 AM
you should have been turning about 4300-4700 depending on your h.p. you will feel a huge difference when we did my pump i thought there was something wrong with the motor when i could only turn about 4200...new impeller and a tight
pump will do that....
[ July 26, 2002, 10:42 PM: Message edited by: norcal spectra ]
hack job
07-26-2002, 05:09 PM
yeah iam thinking that you were blowing water bye or not moving enough water there is now way a stock motor would be able to move that impeller at 5300 rpm. thats my opion i can tell you that in my spectra 19 when it was stock it would only spin to 4700 at 53 mph. the tight pump is going to test the motor, and going to bring down your rpm.! wink