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 What engine temperature are you running at ?		  New Topic  Reply to Topic
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carvermitch


Canada
407 Posts
Posted - 07/03/2008 :  8:14:19 PM  Show Profile  Visit carvermitch's Homepage Send carvermitch a Private Message  Reply with Quote
What temperature does your carver Mariner twin V drive run at when cruising ?
My twin 351 with V drives runs at around 140 DEG at around 1800 RPM and about 160 - 165 at 2200 RPM. Does anyone know what the normal temperature is and how hot is too hot for these engines?. Is 180 range too hot?

Regards
Paul

http://www.carvermariner.com

BillMiller74344



USA
70 Posts
Posted - 07/07/2008 :  10:06:23 AM  Show Profile Send BillMiller74344 a Private Message  Reply with Quote
My Mariner with twin 305 engines run between 130 and 140. Would expect the 160 - 165 indicates a deterioration of your seawater pumps.

wam
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woodboat



Canada
131 Posts
Posted - 07/07/2008 :  10:37:40 PM  Show Profile Send woodboat a Private Message  Reply with Quote
Question would be - are you running with thermostats or not? Without them, you will run cooler, generally speaking, probably in the 120/140 range. Frequently thermostats used are set to open at 165 (and here in the great white north we even use 185degF). Cold operation can be just as hard/wearing on the engine/transmission as hot imo. From my knowledge, your readings sound ok. If you are not on plane at 2200rpm, you would find better fuel economy and control at 2800 on plane, and the engines would not be working as hard.
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Rockmeister



USA
307 Posts
Posted - 07/08/2008 :  6:10:41 PM  Show Profile Send Rockmeister a Private Message  Reply with Quote
I agree with what has been stated so far.
My 302s run between 140 and 150 with new impellers.
For a Chevy, 180 isnt too hot, but the Fords tend to like cooler temps.

79 28' Mariner twin inboard V-drive.
SW Lake Erie: Maumee Bay & The Islands
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carvermitch



Canada
407 Posts
Posted - 07/08/2008 :  7:07:52 PM  Show Profile  Visit carvermitch's Homepage Send carvermitch a Private Message  Reply with Quote
Thanks guys
I thought that was the case but needed to be reassured. To my knowledge they both have 142 thermostats so it sounds OK where they are. Thanks again.
regards
Paul

http://www.carvermariner.com
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