| Revcon engine performace- more details [message #84832] |
Sun, 16 May 2010 11:59  |
hertfordnc
Messages: 1164
Registered: September 2009
Location: East NC
Karma: 0
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Senior Member |
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I posted this to the Revcon group and got some response but there is a lot more 455 knowledge here so if no one minds.....
For the shakedown drive home on 200 miles of mostly flat road the instruments
were as follows
Oil temp was around 190.
Water temp didn't get above 150- except when I shut it off after a 70 mile
stretch. Then coolant bubbled from the expansion tank. I assume that is due to
the trans being hot and heating the water in the radiator when the rig stops?
The next time I let it idle for 15 minutes after a long run and it did not
spike.
Oil pressure around 37 lb
vacuum - 17 and falling to zero when I opened it up.
If these numbers tell us anything meaningful please enlighten me.
Dave & Ellen Silva
Hertford, NC
76 Birchaven, 1-ton and other stuff
Currently planning the Great american Road Trip Summer 2021
It's gonna take a lot of Adderall to get this thing right.
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| Re: Revcon engine performace- more details [message #84837 is a reply to message #84835] |
Sun, 16 May 2010 12:35  |
hertfordnc
Messages: 1164
Registered: September 2009
Location: East NC
Karma: 0
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Senior Member |
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That just occurred to me as I posted it. I'd say it's pretty likely there is no thermostat.
Dave & Ellen Silva
Hertford, NC
76 Birchaven, 1-ton and other stuff
Currently planning the Great american Road Trip Summer 2021
It's gonna take a lot of Adderall to get this thing right.
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| Re: Revcon engine performace- more details [message #84840 is a reply to message #84832] |
Sun, 16 May 2010 13:24 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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Senior Member |
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| hertfordnc wrote on Sun, 16 May 2010 09:59 |
...
Water temp didn't get above 150- except when I shut it off after a 70 mile
stretch. Then coolant bubbled from the expansion tank. I assume that is due to
the trans being hot and heating the water in the radiator when the rig stops?
The next time I let it idle for 15 minutes after a long run and it did not
spike.
...
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The coolant boiling when the engine was turned off is normal. I believe they call it "heat soak." When running the coolant is circulating and isn't in the hot spots of the engine for long enough to come to a full boil. When the circulation stops, the water in the hot spots boils... expanding and pushing some coolant out into the expansion tank.
When hot, letting any engine idle for a while before shutting off is a good idea. It reduces heat soak.
I agree that it doesn't look like the thermostat is working (not closing) ... if it even has a thermostat.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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