What thermostat should I run?
#1
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I have a gen VI 425 ho crate motor in my boat. I am trying to mimic the gen V 454 mag carb from mercruiser. When I look online in the parts catalogs, it shows a 160 degree thermostat. But I think I saw other gen V 454 mags with 140 degree thermostat? So I'm not sure what one to run. I installed a 160 and when I ran it, I believe the temp got up to around 170 or so. Is this ok? I don't want condensation in my oil or valve covers. Like I said I have the 454 crate motor with aluminum dual plan intake, stock heads and valve train. holley 750, gil exhaust with dry tails, circulation pump. [ATTACH=CONFIG]516268[/ATTACH]
Last edited by FBRONCO; 01-14-2014 at 03:06 PM.
#5
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For instance, on mercruiserparts.com for a 454 mag with carb it shows both a 140 and a 160 with two different thermostat housings. I have the thermostat housing that shows the 160.
http://www.mercruiserparts.com/selec..._nbr=821723+92
http://www.mercruiserparts.com/selec..._nbr=821723+92
Last edited by FBRONCO; 01-14-2014 at 03:21 PM.
#8
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I run a 160 but I boat in real cold water, sometimes only 34 degrees. When I run real hard my oil hits 270 but for the most part the oil sits around of 200.