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Messages - woskie70

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1
Engine Mechanical / Electrical / Fuel pump pressure problems
« on: July 30, 2019, 07:53:39 PM »
I am having problems with my Holley red fuel pump jumping from 6.5 psi all the way up to over 10psi after it has ben on for a few seconds. Anyone have advice on how to fix this without putting a pressure regulator on it.

2
Engine Mechanical / Electrical / Re: Fuel pump
« on: July 30, 2019, 07:50:53 PM »
Same as I have.

72 jets up front
Lightest vacuum diaphragm spring.
Still running a stock numbered power valve.
Rear metering plate is stock also.
~500 hp 454.

Dan'l

what fuel pump are you running?

3
Jet Pumps / Re: 12jc pump rebuild
« on: August 30, 2017, 11:30:12 PM »
Thank you all for the help on this thread. Got he boat out and running great this summer


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4
Jet Pumps / Re: 12jc pump rebuild
« on: June 19, 2017, 09:43:28 AM »
At the finishing stages of the pump replacement and was wondering what kind of silicone to use for the gap between the bowl and the transom


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5
Jet Pumps / Re: 12jc pump rebuild
« on: June 13, 2017, 05:20:17 PM »
So I'm looking at replacing his water line. Does anyone know the size of the line going into the pump? Mine is frozen solid and I can't seem to get the valve part off. Also where do you find replacement parts?


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6
Jet Pumps / Re: 12jc pump rebuild
« on: June 01, 2017, 12:54:17 PM »
So the screws broke off in here does anyone know how I could get the stubs out or do I need to replace it?


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7
Jet Pumps / Re: 12jc pump rebuild
« on: May 14, 2017, 08:46:31 AM »
This was caused by a thrust bearing failure.  Bowl pressure pushes forward on the impeller and shaft.  When the bearing failed, the impeller ate into the suction housing.
So do you think I can still use this housing or should I start looking for a new one?


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8
Jet Pumps / Re: 12jc pump rebuild
« on: May 12, 2017, 09:58:27 AM »
Looks like the wear ring is still there. Take a torch to melt the insulator and remove the old wear ring and check for damage. Look at the vanes and the shaft also.


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The shaft is toast. But I will remove the wear ring next time I get back to work on it. The vanes are not to bad


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9
Jet Pumps / Re: 12jc pump rebuild
« on: May 12, 2017, 09:56:28 AM »
How does this type of damage to the impeller happen. I was always told that it doesn't actually touch the wear ring.


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I'm pretty sure it got something stuck inside and that's what caused the damage. After so many years who knows. The crazy part is the boat still ran over 60 mph like this I don't know how but it did.


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10
Jet Pumps / Re: 12jc pump rebuild
« on: May 11, 2017, 09:11:34 PM »
A few more pics


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11
Jet Pumps / Re: 12jc pump rebuild
« on: May 11, 2017, 09:08:30 PM »
So I have now gotten everything apart and found a mess. This was my dads boat he bought new in '75. First time the pump has been touched in 40 years. I have taken on this family gem and trying to get it back to its glory days. My impeller is in pieces and my bearings are shredded. Here are some pictures. My number one question is did the impeller do to much damage to keep using the housing? Any info anyone has about any part of this is appreciated.


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12
Jet Pumps / Re: Pump work
« on: May 09, 2017, 09:23:12 PM »
Did you use him and how was it if you did?

13
Jet Pumps / 12jc pump rebuild
« on: May 09, 2017, 09:04:59 PM »
I am in the process of rebuilding my pump and had a question. What do I use to take this bolt or screw off?


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