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  #1  
Old 06-19-2009, 08:43 AM
Taskmaster Taskmaster is offline
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Normal running temp for '79 SS?

What is the normal running temp for a 1979 Stars and Stripes? Has a 143 degree thermastat.
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  #2  
Old 06-19-2009, 09:00 AM
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Gamble Gamble is offline
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should be around 140 w/that thermostat............you running a 351W I'm assuming.
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Old 06-19-2009, 10:25 AM
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thwack thwack is offline
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I just sold my 79 S&S two days ago and I have a few friends with early 80's S&S boats. They typically run between 150 and 165. However, if you have a 143 degree thermostat in your 351, it should run around that temp. The thermostat should govern the operating temperature as it opens to allow cooling water to run through when the temp reaches that point.
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Old 06-20-2009, 06:54 PM
Taskmaster Taskmaster is offline
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Thanks for the replies. We have been fighting with it running this year and decided it was time to update a few things. Electronic ignition, replaced all sending units, and non-working temp guage. So was curious on normal temp.

Now we are having hot start problems so time to rebuild starter. This boat is a head turner, just replaced decals and buffed out gel coat. We look cool as we get towed back to the dock. :-(
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  #5  
Old 06-20-2009, 07:30 PM
TMCNo1 TMCNo1 is offline
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Quote:
Originally Posted by Taskmaster View Post
Thanks for the replies. We have been fighting with it running this year and decided it was time to update a few things. Electronic ignition, replaced all sending units, and non-working temp guage. So was curious on normal temp.

Now we are having hot start problems so time to rebuild starter. This boat is a head turner, just replaced decals and buffed out gel coat. We look cool as we get towed back to the dock. :-(
Normal idling and running on plane, no load, 145 to 155 degrees engine temp.
As for hot start problem, before you rebuild the starter, check the timing, should be 6 degrees BTDC @ 600 rpm at idle in gear.
Normal idle in neutral, 850 to 900 rpm.
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Last edited by TMCNo1; 06-20-2009 at 07:33 PM.
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  #6  
Old 06-22-2009, 11:33 AM
TRBenj TRBenj is offline
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All of my PCM Fords with the 143 stat run a touch under 160.
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  #7  
Old 06-22-2009, 07:03 PM
stars-stripes08 stars-stripes08 is offline
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I have a 78 S&S just out yesterday with it and it was a tick under 150 at its hottest point and that was after several laps around the lake with my son skiing behind it. I run around 27 MPH he is only 70 pounds and 9 years old.
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Old 06-23-2009, 03:13 PM
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jenglin jenglin is offline
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My 88 TriStar 190 runs 200. Should I look at a different thermostat or a new impleller? I just changed my impleller last year.
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  #9  
Old 06-23-2009, 03:17 PM
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cbryan70 cbryan70 is offline
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Originally Posted by jenglin View Post
My 88 TriStar 190 runs 200. Should I look at a different thermostat or a new impleller? I just changed my impleller last year.
this seems a bit hot. I would check the impeller first then the T-stat may have the wrong one in there
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  #10  
Old 06-23-2009, 03:50 PM
Commandohorn Commandohorn is offline
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Owners manual says 165 to 195 for my 89 Prostar.....
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