Jurgen-Jm-Imports Posted September 29, 2006 Share Posted September 29, 2006 took an mr-s spyder part ex against my t78 mr2 i have noticed on deffi gagues the oil temp goes to 120c ???? and the warning light comes on. phoned previous owner its never happened to him lol anyway this only happens after 90 mph ?? it goes down gradually if i coast to say 70mph ? then it drops to 110-118c any ideas wrong oil grade,??? checked oil seems fine car is a 99 toyota mr-s spyder with power enterprise turbo Link to comment Share on other sites More sharing options...
wkdtime Posted September 29, 2006 Share Posted September 29, 2006 Shite oil? Whats the grade at the moment being used and oil brand? Link to comment Share on other sites More sharing options...
Jurgen-Jm-Imports Posted September 29, 2006 Author Share Posted September 29, 2006 Shite oil? Whats the grade at the moment being used and oil brand? pass not my car was part ex. is this what it is crap oil ?? Link to comment Share on other sites More sharing options...
Ian W Posted September 29, 2006 Share Posted September 29, 2006 pass not my car was part ex. is this what it is crap oil ?? change it and find out? Link to comment Share on other sites More sharing options...
Jurgen-Jm-Imports Posted September 29, 2006 Author Share Posted September 29, 2006 ok i will but on a worse case scenario if that doesnt sort it any ideas what it may be or causes. what is a normal oil temp anyway Link to comment Share on other sites More sharing options...
uk-rich Posted September 29, 2006 Share Posted September 29, 2006 oil cooler ? Link to comment Share on other sites More sharing options...
Ian W Posted September 29, 2006 Share Posted September 29, 2006 ok i will but on a worse case scenario if that doesnt sort it any ideas what it may be or causes. what is a normal oil temp anyway i think 'normal' oil temp is usually 90-100 isn't it? maybe a little more if the car is being driven hard. wouldn't take that as gospel though mate, perhaps someone with more technical knowledge will know.... *waits* Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 29, 2006 Share Posted September 29, 2006 With an aftermarket turbo adding a HUGE amount of heat to the oil from the near red hot beaing cassette, and modern originally N/A engines deliberately running a high oil temp fpr fuel consumption reasons, you are going to need a big oil cooler with a thermostat to keep oil temps in check. It may also be well retarded as it almost certainly runs some crude management fudging. Link to comment Share on other sites More sharing options...
Jurgen-Jm-Imports Posted September 29, 2006 Author Share Posted September 29, 2006 With an aftermarket turbo adding a HUGE amount of heat to the oil from the near red hot beaing cassette, and modern originally N/A engines deliberately running a high oil temp fpr fuel consumption reasons, you are going to need a big oil cooler with a thermostat to keep oil temps in check. It may also be well retarded as it almost certainly runs some crude management fudging. thanks chris so is it safe lol Link to comment Share on other sites More sharing options...
Alex Posted September 29, 2006 Share Posted September 29, 2006 Is the MR-S turbo'd? Link to comment Share on other sites More sharing options...
Ian W Posted September 29, 2006 Share Posted September 29, 2006 Is the MR-S turbo'd? car is a 99 toyota mr-s spyder with power enterprise turbo Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 29, 2006 Share Posted September 29, 2006 thanks chris so is it safe lol A really good race synthetic is OK to 130. It's failry high, if it reaches 120 on the road it will go ballistic if you took it on track, it needs a decent (minimum 25 row 5/8 fitting and hose) cooler in decent airflow to be right. Link to comment Share on other sites More sharing options...
Alex Posted September 29, 2006 Share Posted September 29, 2006 Ahh didn't see the bottom line...I'm sure he's edited it Does sound then like it's in dire need of an oil cooler... Jurgen, Whiffin has built an MR-S Turbo before now, so he might be helpful... Link to comment Share on other sites More sharing options...
Jurgen-Jm-Imports Posted September 29, 2006 Author Share Posted September 29, 2006 Is the MR-S turbo'd? yes Link to comment Share on other sites More sharing options...
Jurgen-Jm-Imports Posted September 29, 2006 Author Share Posted September 29, 2006 A really good race synthetic is OK to 130. It's failry high, if it reaches 120 on the road it will go ballistic if you took it on track, it needs a decent (minimum 25 row 5/8 fitting and hose) cooler in decent airflow to be right. ok thanks chris, i will try new oil for it and advise to fit oil cooler if its going to go to track days,. what wold happen if it hit over 140c would engine seize or blow up???? sorry for questions am just want to make sure all is ok and know what to do if it ever goes above 120c Link to comment Share on other sites More sharing options...
Mike M Posted September 29, 2006 Share Posted September 29, 2006 I think the oil loses some or all of it's lubricating properties above a certain temp and starts damaging engine components. Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 29, 2006 Share Posted September 29, 2006 If you get the oil over 140 C expect damage, although some race engine oils will teolerate this. Link to comment Share on other sites More sharing options...
wkdtime Posted September 29, 2006 Share Posted September 29, 2006 what wold happen if it hit over 140c would engine seize or blow up???? sorry for questions am just want to make sure all is ok and know what to do if it ever goes above 120c Oil seals will suffer and thus possibly fail due to latent failure. Link to comment Share on other sites More sharing options...
Kranz Posted September 29, 2006 Share Posted September 29, 2006 On a non synthetic oil above 125 degrees the oil will start to burn/degrade and you'll be able to smell it. I take it you're measuring sump oil temperature? Temps higher than this will lead to siezure of turbo or engine. Link to comment Share on other sites More sharing options...
Jurgen-Jm-Imports Posted September 29, 2006 Author Share Posted September 29, 2006 On a non synthetic oil above 125 degrees the oil will start to burn/degrade and you'll be able to smell it. I take it you're measuring sump oil temperature? Temps higher than this will lead to siezure of turbo or engine. the oil is fully synthetic i am going to change it to 10-50w Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted September 29, 2006 Share Posted September 29, 2006 I see temps of 118c on the Supra but then the sensor is in the sandwich plate, so will read hotter than sump, think i might end up tapping out a plug for the sump, Jurgen do you know where the temp sensor is located on the MRS? but i think Chris is right about needing an oil cooler what with a big turbo adding heat directly and also as a result of bigger burn/more power. Link to comment Share on other sites More sharing options...
Mike M Posted September 29, 2006 Share Posted September 29, 2006 I thought sump temp senders were the least desirable since the oil temp will always be slightly cooler than what the engine is seeing. Link to comment Share on other sites More sharing options...
Jurgen-Jm-Imports Posted September 29, 2006 Author Share Posted September 29, 2006 I see temps of 118c on the Supra but then the sensor is in the sandwich plate, so will read hotter than sump, think i might end up tapping out a plug for the sump, Jurgen do you know where the temp sensor is located on the MRS? but i think Chris is right about needing an oil cooler what with a big turbo adding heat directly and also as a result of bigger burn/more power. not sure will have a look tommorow at it, also it only happens when your over 95 constantly for a period once you back off it cools itself down. Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted September 29, 2006 Share Posted September 29, 2006 If you have temp sensor situated somewhere like the sandwich plate or another gallery in the block, you will see higher temps depending on proximity to the cylinder/cylinder head, also the fact that the oil will Carry the higher temps away and into the sump which will be cooler but it will also reflect the overall oil temp of the engine. Link to comment Share on other sites More sharing options...
bignum Posted September 29, 2006 Share Posted September 29, 2006 130 is the max you want to see @ sandwich plate or block even on track use, Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now