It's possible the thermostat was taken out because it ran too hot. I have done that before.tara wrote:Hi
As you advise me i have installed a thermostat in my engine, the weather is actually really hot and temp gauge is showing that engine is running quite hot
What do you think ?
Thànks
Tara
IMG_8853(1) by Simon Hiquily, sur Flickr
thank you, i m gonna take care of thisfulsizjeep wrote:I would say there are issues with the cooling system. When I drove a 327, it had rust issues inside the cooling passages. I had to flush the engine out 2 or 3 times a year to keep it flowing proper. There is a drain plug on each side of the block. I would pull those and ram a coat hanger in there to get it to drain the gunk that built up inside.
interesting, may it is not so hot cos no coolant is puked out the radiator as far as i can noticed when the car is fully warmed. but will check for rust chunks in the block44bz wrote:I don’t think a coolant flush is a bad idea. When I had mine out I replaced the freeze plugs as well. the block was full of casting sand and bits of rust chunks.
That being said, I don’t think your gauge is showing it’s running hot unless you’re getting signs of overheating. Mine sits at the same spot when warmed up and it’s never puked coolant. It runs great.
The temp gauge in these early FSJs doesn’t tell you much. Just like the oil pressure - you get a light telling you when there is none, but if the light isn’t one it doesn’t necessarily mean you have good oil pressure.
Maybe you should install an actual temp gauge and see where you’re at. That was my plan just for the sake of knowing, but haven’t gotten around to it.
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thanks, what readings should i have at block, heads, intake crossover and radiator ?Tatsadasayago wrote:I've had several old V-8s whose coolant passages around the cylinders were completely filled with rust flakes. A good flush with scraping will likely fix the issue. You also might see about getting a laser/infrared temperature gauge to confirm the temps at the block, heads, intake crossover and radiator. Your gauge may be reading high.
The inflow and outflow at the radiator, ideally 195F on the top hose or at the thermostat housing, and depending on outside temp the ouput of the radiator back to the engine should be a good 40F degrees drop, and as much as 70F, so around 150F to 160Ftara wrote:thanks, what readings should i have at block, heads, intake crossover and radiator ?Tatsadasayago wrote:I've had several old V-8s whose coolant passages around the cylinders were completely filled with rust flakes. A good flush with scraping will likely fix the issue. You also might see about getting a laser/infrared temperature gauge to confirm the temps at the block, heads, intake crossover and radiator. Your gauge may be reading high.
THANKS, WILL CHECK THAT ASAPletank wrote:The inflow and outflow at the radiator, ideally 195F on the top hose or at the thermostat housing, and depending on outside temp the ouput of the radiator back to the engine should be a good 40F degrees drop, and as much as 70F, so around 150F to 160Ftara wrote:thanks, what readings should i have at block, heads, intake crossover and radiator ?Tatsadasayago wrote:I've had several old V-8s whose coolant passages around the cylinders were completely filled with rust flakes. A good flush with scraping will likely fix the issue. You also might see about getting a laser/infrared temperature gauge to confirm the temps at the block, heads, intake crossover and radiator. Your gauge may be reading high.
The oil pan temp will be around 20 higher than the coolant, so 225F is about right on a 70F day -when I measured mine years ago-
If you turn the heater on at full speed does the temp gauge goes down?
as said above our gauges are inacurrate , but they give you an idea of what is happening -most of the time-
So check the grounds or add grounds
damn true, i don't understand whats going on !BCRAWLER wrote:Sorry but cannot understand why lower hotter. As I understand water from block enters from the top and is cooled as it flows down the rad. Is the pump turning in the right direction?
If the surface of measurement is not even, such as rust, it can give weird numbers, but we are on rubber hoses, I had issues on the thermostat housing area, but was getting lower number than the top of the radiator.tara wrote:damn true, i don't understand whats going on !BCRAWLER wrote:Sorry but cannot understand why lower hotter. As I understand water from block enters from the top and is cooled as it flows down the rad. Is the pump turning in the right direction?