Whitaker717 Posted February 22 Share Posted February 22 Hi guys, I am going to attempt replacing my thermostat on my 87 this weekend and need a bit of guidance. I know how to get the housing off and all that fun stuff but basically refilling all the coolant makes me a bit nervous. Does anyone have any tips or videos on how to refill it without getting a bunch of air in it! Also how much coolant does it require? I have recieved a few tips but still have a bit uncertainty doing it. Is there a video anywhere? Thanks guys Link to comment Share on other sites More sharing options...
llhat Posted February 22 Share Posted February 22 recently drained my 89 with closed system by opening petcock on radiator, then R&R thermostat and housing. I bought a gallon of 'pure' antifreeze, and used an empty antifreeze jug to make a 50/50 mix. Filled system, and did 'burp' couple different ways, I had installed a later version of the thermostat housing with the port for a sensor, which i adapted for a mechanical temperature gage, it appeared this location was at least the same level as the temp sensor at back of cylinder head, so used it for air venting It appeared I still had about a quart of 50/50 mix left when I was done after circulating, burping, and final fill. Link to comment Share on other sites More sharing options...
Whitaker717 Posted February 24 Author Share Posted February 24 Did you fill from the hose off the thermostat housing? How much antifreeze should I get. Link to comment Share on other sites More sharing options...
llhat Posted February 24 Share Posted February 24 no, i filled from the stock tank on firewall, but had the hose connection i made for new temp gage on housing loose when the coolant started coming out, snugged that fitting... "may" be faster filling using housing connection, but probably messy and getting a dang funnel stabilized would be a PITA re-read my post above.... I bought a gallon of 'pure' antifreeze, and used an empty antifreeze jug to make a 50/50 mix. would this not make two gallons of 50/50?? It appeared I still had about a quart of 50/50 mix left when I was done after circulating, burping, and final fill. Link to comment Share on other sites More sharing options...
Whitaker717 Posted February 24 Author Share Posted February 24 2 hours ago, llhat said: no, i filled from the stock tank on firewall, but had the hose connection i made for new temp gage on housing loose when the coolant started coming out, snugged that fitting... "may" be faster filling using housing connection, but probably messy and getting a dang funnel stabilized would be a PITA re-read my post above.... I bought a gallon of 'pure' antifreeze, and used an empty antifreeze jug to make a 50/50 mix. would this not make two gallons of 50/50?? It appeared I still had about a quart of 50/50 mix left when I was done after circulating, burping, and final fill. My mistake I forgot you wrote that. I will grab a couple gallons. Should be fun. Link to comment Share on other sites More sharing options...
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