Temp issues

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Steveo909

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« on: October 09, 2018, 11:22:59 PM »
My engine is heating up to 220 at idle. I have the gate valve open all the way. Runs on plain around 160-170. Itís a new engine so I know the itís not a sand blockage issue. Plumbing is correct. 460 Ford. Mildly built. Any thoughts?


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Flusher

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« Reply #1 on: October 10, 2018, 07:00:38 AM »
Do you have all of the water flowing through wet exhaust?  Just wondering if you have verified flow if you are dumping water overboard via a bulkhead.
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« Reply #2 on: October 10, 2018, 07:48:31 AM »
Make sure the 3/8 tube is clear my insert came loose and was blocking mine and that was my overheating problem

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Steveo909

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« Reply #3 on: October 11, 2018, 09:39:38 AM »
Do you have all of the water flowing through wet exhaust?  Just wondering if you have verified flow if you are dumping water overboard via a bulkhead.
Yes they are log manifolds. After playing with it a little it seems to run cooler on the hose than it does in the lake. I wonder if gate valve is bad.


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Steveo909

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« Reply #4 on: October 11, 2018, 09:41:13 AM »
Make sure the 3/8 tube is clear my insert came loose and was blocking mine and that was my overheating problem

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Iíll check it. Seems to be something between the motor and the pump because it runs cooler on the hose than in the lake.


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Tikotiko

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« Reply #5 on: October 11, 2018, 03:53:04 PM »
Just bought my first boat im seeing a similar problem but i havent tried it with a hose yet. I want to meet with someone that knows these 460s well to get some knowledge im in Nuevo if anyone near Menifee or other neighboring cities wouldnt mind schooling me

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« Reply #6 on: October 11, 2018, 07:17:20 PM »
Iíll check it. Seems to be something between the motor and the pump because it runs cooler on the hose than in the lake.


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Just bought my first boat im seeing a similar problem but i havent tried it with a hose yet. I want to meet with someone that knows these 460s well to get some knowledge im in Nuevo if anyone near Menifee or other neighboring cities wouldnt mind schooling me
It's really hard on the pump to run them dry.
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sevans01

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« Reply #7 on: October 11, 2018, 07:36:28 PM »
Just bought my first boat im seeing a similar problem but i havent tried it with a hose yet. I want to meet with someone that knows these 460s well to get some knowledge im in Nuevo if anyone near Menifee or other neighboring cities wouldnt mind schooling me

Iím no expert what so ever, but I work in nuevo if you need help with anything


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« Reply #8 on: October 11, 2018, 08:15:44 PM »
It's really hard on the pump to run them dry.
Ive only ran it at lake perris twice what i meant is i havent tried running it at home with a hose since i bought it

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Tikotiko

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« Reply #9 on: October 11, 2018, 08:16:31 PM »
Iím no expert what so ever, but I work in nuevo if you need help with anything


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Im cool with that 9516168725

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Steveo909

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« Reply #10 on: October 11, 2018, 09:56:18 PM »
It's really hard on the pump to run them dry.
Yes it is. Unfortunately I donít have a PTO. U joint bolts directly to flywheel. I can hear the thrust bearing rattle a little at low rpm when itís on the hose to I try to keep it to a minimum.


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« Reply #11 on: October 12, 2018, 07:04:07 AM »
Would also be a good idea to completely back off the packing clamp.  The packings are water lubricated and rely on water pressure to generate a small amount of leakage.  About 10 drops per minute is sufficient to cool and lubricate the surface of the shaft against the packings.  This isn't possible with a garden hose.

The thrust bearing is not an issue.  When necessary, we run boats without a bowl and impeller.

The other issue is the impeller and wear ring surfaces abrade from dirt picked up during towing.  This reduces performance by opening up the clearance.

Even if you have the garden hose plumbed into a tee fitting, water isn't fed directly to the wear ring surface.  Water dumps into the bowl and the impeller gets only a little splash.

Lastly, in the event of water lubricated bowl bushings.  Running dry tears up the bushings and shaft.  It is not uncommon for this to be ignored until the bushings completely wear through and the bore in the bowl is damaged.

We put a lot of work into these parts and want to maximize the lifespan.  We recommend, when launching, dunk the boat in the water far enough to completely submerge the pump.  Pull forward so all the water flushes out any debris picked up from the road.

Impellers and wear rings are expensive.  It is astonishing to see how much wear is caused by running on the trailer.
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