raw water pump
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=33326
Printed Date: November-17-2024 at 7:20pm
Topic: raw water pump
Posted By: lakedog55
Subject: raw water pump
Date Posted: April-12-2014 at 4:12pm
Changed impeller and thermostat made temp go up a couple of degrees. Not sure but the new o-ring for impeller looked thinner. Might of used wrong paper gasket. No leaks. I guess it still could be sucking air. 86 sn 351 gt. Wanting to run a tick above 160 . 143 thermostat.
Mike
Any thoughts?
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Lakedog55
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Replies:
Posted By: 63 Skier
Date Posted: April-13-2014 at 1:06am
What is the problem Mike? Running too hot?
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'63 American Skier - '98 Sport Nautique
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Posted By: lakedog55
Date Posted: April-13-2014 at 1:22am
Not really just want a to run a tick above 160 before it was a little below.
The impeller and all that were had 1 season, but with new motor figured I better change it.
I think I am going to take it back apart out the other oring back in and check the gasket. They seem so generic. These Sherwood pumps are not that impressive.
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Lakedog55
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Posted By: lakedog55
Date Posted: April-13-2014 at 1:24am
At idle it wants to creep up to 165. I like it to go back to 155 or so.
something is a little off. Back to the drawing board
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Lakedog55
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Posted By: 63 Skier
Date Posted: April-13-2014 at 1:32am
I really wouldn't worry about 5 degrees either way. The pumps are actually very simple and reliable, all the pump is doing is supplying a good volume of water, the stat is doing all the work on regulating temp. I have a feeling your pump is working fine. Easy way to check pump volume is to run the boat on the hose and watch the time to empty a 5 gallon pail.
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'63 American Skier - '98 Sport Nautique
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Posted By: Gary S
Date Posted: April-13-2014 at 1:38am
New motor running warm because it's not broken in yet? Water temp of what your running in is getting warmer? Gauges aren't that accurate maybe you were running cooler before. I would not worry IMHO.
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http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS
95 Nautique Super Sport
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Posted By: lakedog55
Date Posted: April-13-2014 at 2:14am
Thanks,
not like it is anywhere near being hot. Maybe a little over cautious on my part.
Thanks Again
Mike
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Lakedog55
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Posted By: TRBenj
Date Posted: April-13-2014 at 10:42am
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Mike, maybe you could describe what you're seeing in better detail we could comment on the cause... Idle vs speed, specific temps, etc?
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Posted By: lakedog55
Date Posted: April-13-2014 at 10:57am
I'll try. Boat idle on its own just a hair above 160. On take off itwill go down to 150 ish then climb to 163. Then when coming back to idle it will go to about 170 and eventually get back down to a little over 160. Before i did the impeller and thermostat it was running cooler. 143 thermostat and a sherwood impeller kit.
i think it is getting air either at the paper filter or the oring seemed smaller.
it's not getting hot. Just not a cool as before i messed with it.
thanks
mike
going to be a great day at lake weir.
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Lakedog55
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Posted By: baitkiller
Date Posted: April-13-2014 at 12:07pm
My guess is it's the thermostat. If the risers are cool you have enough water. If you are really bored you can test the stat on the stove in a pot of water.
Or you could spend the same time with trying another stat of another brand. Your time and $. They just dont make stuff like they used to. New does not equal good.
It should stabilize around 160 and only move a touch either way even under heavy load.
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Jesus was a bare-footer.............
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Posted By: backfoot100
Date Posted: April-14-2014 at 11:07am
Mike, I don't think I'd worry too much about it. As long as it's not running hot I think you'll be fine.
FYI, before my rebuild, I was running a 143 stat and it would stay right at that mark pretty much. Maybe hit 150 after a hard run.
After my rebuild, I too changed the stat, impeller, RWP seals, all hoses and circulation pump. Pretty much everything was brand new except the sender itself. I figured that was easy to change if I needed to after the fact. I also put new gauges in.
Since then, it runs right at 160 and maybe hits 170 on a hard run. So I could probably change out the sender to a brand new one but as long as it doesn't get any hotter than it has been, I'm good with it. Seems to be no different than pretty much everybody elses engines.
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When people run down to the lake to see what's making that noise, you've succeeded.
Eddie
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Posted By: lakedog55
Date Posted: April-14-2014 at 11:22am
Eddie,
Thanks,
I took it back apart and changed out the o-ring and added some permatex to the paper gasket.
Pretty much same temps maybe a little more stable and seemed to stay cooler idling.
It does have a new sender. Conditions were real crap and tons of people out.
Seems strong still have some tuning to do. A little rough spot at about 1400 rpm.
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Lakedog55
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