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beerjet

  • Karma: +81/-0
Dear Jet Tech ...
« on: September 27, 2009, 11:53:21 AM »
Is there anyway I can check my pump without taking it apart.
I've heard there were loader bearing adjustments that needed to be looked at  ???
How about loosening the throwout lever  ???

I'm sooo lost .....   :banghead:

-beerjet-

BTW: The AC has me partched , Mike  :sly:
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i dont but im all for stuffin shit in her ass to make her go away :-*

crewchief22

  • Karma: +66/-0
Re: Dear Jet Tech ...
« Reply #1 on: September 27, 2009, 12:01:03 PM »
The best way to "check" you pump is with the boat in the water.

First off you need to check your accelleration with a 5000rpm neutral drop.

Then check your output at top speed by placing your hand over the nozzle.

Call us back with the information you gathered and we will be more than happy to help.

  ;)   ;D
  • 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?

2savage4you

  • Karma: +14/-1
Re: Dear Jet Tech ...
« Reply #2 on: September 27, 2009, 12:06:47 PM »
you forgot about the trans brake... if you dont use it launching from the trailer will be messy



5 K sounds about right ;D
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propless

  • Karma: +12/-0
Re: Dear Jet Tech ...
« Reply #3 on: September 27, 2009, 12:07:52 PM »
 Those things never go bad, dont worry about it.

 If you want to check it though, just start the boat (on the trailer) and shove a stick up the intake.  If wood chips come out of the nozzle, its fine.  >:D
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Welcome to the club of broken boats :o  Pay here$ bend over and move along.

GT Jets

  • Karma: +192/-0
Re: Dear Jet Tech ...
« Reply #4 on: September 27, 2009, 12:08:29 PM »
You can also check overall nozzle velocity and volume by utilizing a Place Diverter at WOT full up pointed at a courtesy dock with a Park Ranger standing on it, if he is able to get out of the water and write you a ticket or arrest you, the velocity and volume numbers are inadequate.   :thumbup: :thumbup:

 ;)
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

OC2Vegas

  • Karma: +12/-0
Re: Dear Jet Tech ...
« Reply #5 on: September 27, 2009, 12:09:36 PM »
Those things never go bad, dont worry about it.

 If you want to check it though, just start the boat (on the trailer) and shove a stick up the intake.  If wood chips come out of the nozzle, its fine.  >:D

I thought you had to put a metal pipe up the intake and check for shavings. if it grated the pipe you were good! Damn, been doing it wrong!
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1979 Sanger Superjet
BBC, 12JG

propless

  • Karma: +12/-0
Re: Dear Jet Tech ...
« Reply #6 on: September 27, 2009, 12:35:39 PM »
I thought you had to put a metal pipe up the intake and check for shavings. if it grated the pipe you were good! Damn, been doing it wrong!

 Thats a good way too, but sticks are free and I always need wood chips for the planters.  ;D

 BTW,  If the boats not as fast as it should be, dont bother rebuilding the pump.  Just smear a bunch of sillycone around the impeller. It works wonders.
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Welcome to the club of broken boats :o  Pay here$ bend over and move along.

OC2Vegas

  • Karma: +12/-0
Re: Dear Jet Tech ...
« Reply #7 on: September 27, 2009, 02:13:23 PM »
Thats a good way too, but sticks are free and I always need wood chips for the planters.  ;D

 BTW,  If the boats not as fast as it should be, dont bother rebuilding the pump.  Just smear a bunch of sillycone around the impeller. It works wonders.

If thats the case, my last boat (Never had in water) should of been the fastest boat ever and it only had a Jac WJ in it!  ::)
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1979 Sanger Superjet
BBC, 12JG

2savage4you

  • Karma: +14/-1
Re: Dear Jet Tech ...
« Reply #8 on: September 27, 2009, 03:23:15 PM »
If thats the case, my last boat (Never had in water) should of been the fastest boat ever and it only had a Jac WJ in it!  ::)

Ive had three very fast boats that didnt see water unless it rained or i washed them...

Great gas mileage too.
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Brad @ SCJB

  • Karma: +255/-0
Re: Dear Jet Tech ...
« Reply #9 on: September 27, 2009, 04:47:57 PM »
I've heard there were loader bearing adjustments that needed to be looked at  ???

boost is the loader bearing expert around here, maybe he will chime in.  :thumbup:
  • Boat #1: 1978 Liberty
  • Boat #2: 1982 Eliminator Sprint
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BOOST

  • Karma: +25/-0
Re: Dear Jet Tech ...
« Reply #10 on: September 27, 2009, 05:39:27 PM »
boost is the loader bearing expert around here, maybe he will chime in.  :thumbup:
  The loader Bearing clearance should be set with the shims that come with the installation package four blue ones and four red ones ,mix and match the colored shims until the bearing spins freely you only want about a .020  of play between the loader and the bearings remember if one of them goes bad you might as well replace all four, easy fix just drop the loader down the bearings will come with it their held in by the four screws  be careful as you set the new bearing on that you don't forget to grease them. good luck :thumbup:   Good times Brad I forgot who was there that night.       
« Last Edit: September 27, 2009, 05:46:31 PM by boost »
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GT Jets

  • Karma: +192/-0
Re: Dear Jet Tech ...
« Reply #11 on: September 27, 2009, 05:47:22 PM »
  The loader Bearing clearance should be set with the shims that come with the installation package four blue ones and four red ones ,mix and match the colored shims until the bearing spins freely you only want about a .020  of play between the loader and the bearings remember if one of them goes bad you might as well replace all four, easy fix just drop the loader down the bearings will come with it their held in by the four screws  be careful as you set the new bearing on that you don't forget to grease them. good luck :thumbup:         

I thought the red and blue shims were only for a Berkeley 12JC and they were yellow and orange for a 12JG...HMMMMM, learn sompin' new every day/post...

GT
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

jet boat performance

  • Karma: +25/-0
Re: Dear Jet Tech ...
« Reply #12 on: September 27, 2009, 08:39:32 PM »
MY work is done here ! ;)
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crewchief22

  • Karma: +66/-0
Re: Dear Jet Tech ...
« Reply #13 on: September 27, 2009, 08:41:59 PM »
Shouldn't this be a sticky for all the newbies to learn from  ;)
  • 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?

wizard612

  • Karma: +4/-0
Re: Dear Jet Tech ...
« Reply #14 on: September 28, 2009, 07:41:27 AM »
Ah yea I remember back in the day when Steve King built the first loaders for himself and Craig Millet.
They were very basic, we didn't even use barrings! Bronze bushings were what we used in the first few attempts.  Boy you can just imagine what happened when those let go! Clearances where not even thought to be important, boy were we wrong on that one too! I think it was the Firebird race in '74 when we finally figured out what we were doing wrong and finally designed a set of bearing cups to fit two double roller sets with two way seals, That setup would be envied even today. Built for stout too never had to work on them the entire racing year.
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