MattMe Posted October 31, 2010 Share Posted October 31, 2010 Just a quick question... What temprature would an engine block reach usually? I'm guessing less than 100 degrees celcius, as the water would boil above that. Sounds logical to me, but these things aren't always as they first seem I guess. Would the entire engine reach the same temp all over, as the metal would conduct the heat? Or would it just be the areas which the water cools that would stay below 100? Would all water-cooled engines run at approximately the same temp? Some random questions, but we were discussing it at work the other day. Any input? Quote Link to comment Share on other sites More sharing options...
Ekona Posted October 31, 2010 Share Posted October 31, 2010 Water doesn't boil at 100C when under pressure as in a car, so temps of 130C aren't unheard of (although a little on the high side!). All engines will run at different temperatures dependant on their original design, use, age etc. Some bits of the engine will be hotter than others, but I wouldn't like to put my hand on any part when running to find out Quote Link to comment Share on other sites More sharing options...
MattMe Posted October 31, 2010 Author Share Posted October 31, 2010 Ah, never knew that water boiled at a higher temp under presure. Or maybe I have known it since school, but forgot So does that mean average temp for the block of a water-cooled engine wouldn't go over 130? What would average kind of operating temp be in a 350, for example? On reading another thread regarding oil, some folk pointed out that their oil temp was going over 135 on track, so their blocks must be going over 135, and therefore the water too? See - I knew it wouldn't bea straight forward 'less that 100' kind of answer! Quote Link to comment Share on other sites More sharing options...
Darren-B Posted October 31, 2010 Share Posted October 31, 2010 What do you need the answer for? unless you are using the car for hard track use or going f1 the 350 doesnt need to be cooled anymore than the stock setup, otherwise a thermostatically controlled oil cooler wouldn`t go a miss. Quote Link to comment Share on other sites More sharing options...
MattMe Posted November 1, 2010 Author Share Posted November 1, 2010 I'm asking for two reasons: 1 - Because I'm curious, and we discussed it at work. Nobody knew for sure. 2 - Because if I'm to make a component that sits inside the plenum chamber I don't want it to melt! No FI, just typical engine temps (out of curiousity), and max temps you would see a block reach before other components or fluids fail. Quote Link to comment Share on other sites More sharing options...
dyla350z Posted November 1, 2010 Share Posted November 1, 2010 Water wont boil at above 100 degrees for two reasons,firstly due to it being in an enclosed pressurized vessel & coolant changes the boiling point,your oil with be hotter than your coolant. Quote Link to comment Share on other sites More sharing options...
Darren-B Posted November 1, 2010 Share Posted November 1, 2010 the plenum will not get as hot as the block, the only reason that gets hot is due to heat soak from the block. What are you going to put in the plenum then? a little hamster in a wheel? Quote Link to comment Share on other sites More sharing options...
Lincolnbaggie Posted November 1, 2010 Share Posted November 1, 2010 Water temp in my engine usually around 84 degress, but can climb to 91 if stationary - never seen it above 92 degrees. That's the reading from the scanguage that's permanently plugged into the ECU (don't know where the sensor is mind). Quote Link to comment Share on other sites More sharing options...
andlid Posted November 1, 2010 Share Posted November 1, 2010 I'm asking for two reasons:1 - Because I'm curious, and we discussed it at work. Nobody knew for sure. 2 - Because if I'm to make a component that sits inside the plenum chamber I don't want it to melt! No FI, just typical engine temps (out of curiousity), and max temps you would see a block reach before other components or fluids fail. get nylon washers for the plenum spacer that can handle 200+ Quote Link to comment Share on other sites More sharing options...
MattMe Posted November 1, 2010 Author Share Posted November 1, 2010 I'm asking for two reasons:1 - Because I'm curious, and we discussed it at work. Nobody knew for sure. 2 - Because if I'm to make a component that sits inside the plenum chamber I don't want it to melt! No FI, just typical engine temps (out of curiousity), and max temps you would see a block reach before other components or fluids fail. get nylon washers for the plenum spacer that can handle 200+ Haha! You saw straight through my thinly disguised efforts! I'm looking at materials that are 160+ anyway, which should be enough, but might go higher to be double-sure! I'm guessing the plenum would be one of the coolest areas of the engine so it shouldn't be an issue. Otherthanthat, I'm still interested in the block temps and max water temps etc. Quote Link to comment Share on other sites More sharing options...
Ian Posted November 1, 2010 Share Posted November 1, 2010 My water temp sits at around 100 degrees. Does go above 105 sometimes around town Quote Link to comment Share on other sites More sharing options...
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