Ok, I\'ve done a search, as i know it\'s out there, but can\'t find it for the life of me!
I\'ve just fixed my after market water temperature gauge, and therefore want to confirm everything is operating as it should.
So, i\'d like to know some coolant temps people experience. Like, when do fans usually come on? What are normal sort of running temps? What do peoples temps run at in heavy traffic in summer weather like we\'re having at the mo? Any other things i should know about temperature?
Cheers!
fans - 93 or 94 degrees
running temps vary car to car but mine run at 83-86 normal. 86-95 town.
83-98 foot down on track :D
Cheers!
Hmmm....wierd in that case. My temp ran at a tad over 100 this morning. Admittedly it was pretty stop/start traffic and quite hot air temp too. Temp came down too once free of traffic, so i wasn\'t overly concerned. I have not had any issue with water loss recently, except for a small amount a couple of weeks ago.
So it sounds like my temps were a little high, but everything worked as you\'d expect. Perhaps i should keep an eye on it over the next few weeks!
Mine are pretty much the same as Donato\'s. I usually switch air-con on at around the 90 mark to keep it super cool. Never seen temps in the 100s, but never let it get that far. Was thinking just the other day I\'m going to drive around without air con on and see what happens with the temps. In this weather though, I suspect they\'ll be fairly high!
H
Ive seen 109oC on the PFC before but there was some foot to the floor action.... average is it gets to about 90oC then I switch on the air con and bring it down to about 83-85 average. if I dont switch on the AC it\'ll rise to 99 at least in traffic.
its the ACT Im more worried about stay cool until I put my foot down even for a 10second blast then its up to 50degrees and takes FOREVER to go back down :(
So it seems before temps get high, many people stick their air con on to reduce temperatures! So not many people really know what temps. their cars will hit in traffic in hot weather!!
I have been thinking about this theory that hot coolant temps are bad. Now why is that? The fans were designed to come on at a specific temperature by mazda, and therefore they do. Is it because there\'s the thought that if it gets too hot it\'ll need a rebuild? But why? As far as I can work out there are three reasons why a rotary will need a rebuild:
1. Knock - Too much knock and Apex seal failre will occur. Many reasons why this can happen.
2. Water seal failure - usually fails due old age.
3. Overheating - Similar to overheating on a standard internal combustion engine. Warps metal, and thusly rotor housing will not mate together properly.
Therefore, as long as temps come back down when the fans come on then there shouldn\'t be anything to worry about. Of course, you only know when the fans are not coming on when it\'s got too hot, and chances are, it\'s too late by that point!
Reasonable? Are people sticking their Air Con on just as a safety buffer?
I use it as a safety barrier as if I dont stick the AC on the temps just seem to get what I consider to be too hot, anything over 100oC is too much IMO... so a nice temp of 80\'s is better. especially knowing that cooler engine = more power too ;)
Problem is once it hits 100 degrees the metal is hot, you might be able to cool the water a little bit down to say 90 but it\'ll take a bit longer to get the engine/metal etc cooler. also not knowing these engines very well but Im presuming higher coolant temps = higher oil temps?
I spose there\'s another option as to why mine are a bit higher: the gauge might be innaccurate! Or, mine could be accurate, and all you people on the PFC could be innaccurate! Just a thought! :p
Quotecooler engine = more power too
That\'s not necassarily true actually. Most engines are designed to operate optimally at a specific temperature. Obviously that\'s not with coolant temps at 100oC, but all i\'m saying is cooler engine does not mean more power.
It does with air temps though! :)
yeah but I dare bet its better to be running mid 80\'s rather than 100degrees....
least I know Im able to use the power of the car whenever its called upon when running with a reasonably low temp where as if I hit 100degrees and needed/wanted to put my foot down Id be sat thinking nar its not really wise with this temperature.
If that made any sense?
True, sticking your foot down on the loud pedal when temperatures are hot to begin with, could mean the coolant system is going to have a lot more heat to disperse - but any well made coolant system should cope - as long as everythings in good order in the first place.
I guess a lot of our cars are quite old now, and some parts haven\'t been changed for a while. That could add to the problem!
Oh how us standard RX owners live in blissful ignorance! :D
Accurate temperatures - what are they?! Gauge at 8O\'Clock = good, gauge at 9O\'Clock = hmmmmm, gauge at 10O\'Clock = bye bye credit card.
Oh well, maybe one day I\'ll know what the car is doing! :yes
The way I see it too is at least if I attempt to keep the temps under 90oC if I ever look at the gauge and see 100 I know instantly something is wrong so I have time to pull over and get it sorted, if Im happy with 100 degrees and dont look at the gauge for a minute or so then see 110+ it could well be too late before youve pulled over because after switching the engine off the temps will easily rise another 10degrees IMO.
Actually, i may be imagining it, but i think i\'ve seen somewhere the danger temperature. Like i say, i could be imagining it. I might have a look for it during my lunch break. See if i were imagining it!
I remember a post from Gurj a while back saying somethng along the lines of if the car ever hits 117oC then youve not got much hope of saving the car.... :eek:
Right a few facts :)
the opening temp for the stat is 80.5 to 83.5oC the stat is fully open at 95oC
still working on the fans but would expect them to be on later than 95oC
so it seems the optimal temp is higher than 83oC maybe closer to 90 :)
It\'s peace of mind for me with regards to AC. Just like keeping the old girl cool, makes me feel a bit safer when I floor it...
H
I ripped my aircon out so never bother with that...
when i had coolant loss due to a burst pipe my car hit 117oC, it is fine now. But i suspect i was just lucky. Best to keep the temps down around the 85-95 mark... :burnout
Quotethe opening temp for the stat is 80.5 to 83.5oC the stat is fully open at 95oC
still working on the fans but would expect them to be on later than 95oC
so it seems the optimal temp is higher than 83oC maybe closer to 90
Yeah, i just found that too! So, since the thermostat is never fully open until 95, you\'d expect the fans to come on after that. Therefore, i conclude that there is nothing wrong with my coolant system when it ran to just over 100.
Ahhh, Im not arguing that theres anything wrong with it hitting them temps. Not in the slightest, I just dont like it getting to that stage, as I say I dont like the fact of having the power at my right foot if I cant use it cause my temp is reading 100ish....
Had my AC on at dinner and ran between 85-88 but it is a hot day today...
No, sorry, I wasn\'t suggesting you saying that those are dangerous temps. I just don\'t want to turn the air con on if i don\'t want to. Just wanted to make sure the coolant temp was at ok levels - and i\'m happy it is now.
Quote from: davegttph1Ahhh, Im not arguing that theres anything wrong with it hitting them temps. Not in the slightest, I just dont like it getting to that stage, as I say I dont like the fact of having the power at my right foot if I cant use it cause my temp is reading 100ish....
Had my AC on at dinner and ran between 85-88 but it is a hot day today...
Dave, if you want to get the fans to kick in sooner then bring your car round to mine and i can change the settings on the power fc using my datalogit. I think as std the first fan turns on around 93 degrees and the 2nd turns on around 100degrees. I have set mine for 89 and 93 degrees respectively, although the car never really goes above 85 degrees while driving anyway ;)
Paul
Ahhh cheers Paul, I might just do that actually although summer is coming to an end at the minute (if it ever started in the first place ;) ) so might just ride the rest of the year out and see how it runs in the winter before I start tinkering.
Thanks for the offer though :) we\'ll have to meet up again soon :)
No, sorry, I wasn\'t suggesting you saying that those are dangerous temps. I just don\'t want to turn the air con on if i don\'t want to. Just wanted to make sure the coolant temp was at ok levels - and i\'m happy it is now! :)
grrr....posted this twice! I am losing my mind!
cool :D glad weve established everyone is happy with their cars :D for the time being anyhow ;) lol
next stop, ringing pip up for WI I think ;) lol
Next stop for me: Apexi ECU!
Quote from: nikpNext stop for me: Apexi ECU!
Make sure you get the commander with that, then you will know exactly what your temps are ;)
Definately! I want a gadget i can play with! This comes next month, as i too, have become engaged - so had to buy a ring this month!
Quote from: nikpDefinately! I want a gadget i can play with! This comes next month, as i too, have become engaged - so had to buy a ring this month!
Congratulations mate!!
I had to kiss ggodbye to a single turbo for the ring...ah well...maybe in the future... :D
Cheers!
Fortunately, my gf.....no, fiance has less expensive tastes! I can just about cope with her ring!
tell me about it...ah well, she is worth it so im not bothered.
Congratulations again mate. Well done. :)
Cheers!
:guinness
Quote from: davegttph1Right a few facts :)
the opening temp for the stat is 80.5 to 83.5oC the stat is fully open at 95oC
still working on the fans but would expect them to be on later than 95oC
so it seems the optimal temp is higher than 83oC maybe closer to 90 :)
davegttph1,
Just to get things right, are you saying that at 80.5oC - 83.5oC the fan kicks in at slow speed and at 95oC at FULL SPEED? I\'m kinda confuse.... Because my fans kicks in at about 82oC - 85oC...
Cheers,
Jason X