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soron3842

  • Karma: +0/-0
any ideas
« on: September 05, 2011, 09:34:57 PM »
I just got my boat running and out on the water this weekend it has a 455 olds with a 12jc Berkley pump a impeller I GPS my speed and can only seem to get 35 mph any ideas why thats all I'm getting
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Duke

  • Karma: +0/-0
Re: any ideas
« Reply #1 on: September 05, 2011, 09:38:30 PM »
what kind of boat, and what rpm's were you spinning. i'd have to guess its the pump from the info above. . . . or you left your anchor out buahaha jk
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1984 advantage jet boat 454 berkeley

crewchief22

  • Karma: +66/-0
Re: any ideas
« Reply #2 on: September 06, 2011, 06:03:24 AM »
1. Look for debris in the pump.
2. Confirm engine RPM
3. Replace ebay GPS  ;)
  • Boat #1: '77 Hondo Pantera GT Jet
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"Racing is life!  Anything that happens before or after, is just waiting"    Steve McQueen

The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?

HomeBlown57

  • Karma: +0/-0
any ideas
« Reply #3 on: September 06, 2011, 06:34:45 AM »
Is it revving but not going? Or is it not revving?
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soron3842

  • Karma: +0/-0
Re: any ideas
« Reply #4 on: September 06, 2011, 07:55:26 AM »
if i had to guess i would say im running around 4500 to 5000 rpm i dont think my tach is reading right it revs up and runs great i used my garmin gps unit to check speed it has allways been dead nuts in my truck i am thinking my pump is probably wore out what impeller should i be running ?
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soron3842

  • Karma: +0/-0
Re: any ideas
« Reply #5 on: September 06, 2011, 08:13:26 AM »
its a 73 fiberform malibu-jet 19ft
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flathammered

  • Karma: +1/-0
Re: any ideas
« Reply #6 on: September 06, 2011, 02:50:26 PM »
is there any vibration
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soron3842

  • Karma: +0/-0
Re: any ideas
« Reply #7 on: September 06, 2011, 04:05:13 PM »
yes there is some vibration now that you mention it not much tho
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GlassCutter

  • Karma: +31/-0
Re: any ideas
« Reply #8 on: September 06, 2011, 04:53:31 PM »
You guys are getting better, props to you all!  This has been up for almost an hour and nobody mentioned that it might just be an "Olds" thing.  You guys are A-OK   ;D

And yeah it sounds like the pump is worn out.
  • Boat #1: 1973  Wriedt Montara 23
  • Boat #2: 1978 Spectra 20 460/Berkley
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Also, I will kiss bare male ass in the middle of the Vegas Strip  . . .  I will post pics if I need to.  --  IRRebel 2013

"Go ahead Rivertard does it.  Take a video though."

"If you did it in a dodge it would have shifted perfectly ran a thousand miles per hour and got optimum fuel mileage!"  Nordie  2012

soron3842

  • Karma: +0/-0
Re: any ideas
« Reply #9 on: September 06, 2011, 05:05:56 PM »
Yes thank you all for not  olds lol  ^-^ and thank you everyone for all your input and help you are all a great group of guys
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soron3842

  • Karma: +0/-0
Re: any ideas
« Reply #10 on: September 06, 2011, 05:21:50 PM »
Lol thank you for not ragging on my olds !
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