Who wants an IS-F specific Oil Cooler kit?
06-25-09, 12:12 PM
#16
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Ahhhh that's the kind of oil cooler it has. I know how that works, my Subaru STI has the same exact oil cooler from the factory. They are adequate for street use but definitely don't hold up to track duty.
It would be a good idea to get some kind of gauge if one plans on doing track days, so they can properly monitor oil temp. Anything over 270* is getting pretty hot, and getting on to 300* means you should definitely cool it down before further driving. Maybe we should post up some of the gauges we have...
Anyway, it would be nice to have a bigger air/water heat exchanger for the oil cooler but as the stock system is setup it would take quite a bit of moving stuff around if the oil filter is where I think it is. On the STi the oil filter is already getting low if you use a sandwhich plate. If you were to make the cooling element bigger, or longer, to aid in oil cooling, you could be pushing the oil filter down to a dangerous height. Meaning you could risk hitting the oil filter on road debris and that would be real bad.
And air/air oil cooler is definitely the easiest and cheapest, compared to a big air/water setup. Same for intercoolers. I'll post up some pics of what we would be using for the basis of our kit.
If there is interest we'll try and make one up for you fellas.
It would be a good idea to get some kind of gauge if one plans on doing track days, so they can properly monitor oil temp. Anything over 270* is getting pretty hot, and getting on to 300* means you should definitely cool it down before further driving. Maybe we should post up some of the gauges we have...
Anyway, it would be nice to have a bigger air/water heat exchanger for the oil cooler but as the stock system is setup it would take quite a bit of moving stuff around if the oil filter is where I think it is. On the STi the oil filter is already getting low if you use a sandwhich plate. If you were to make the cooling element bigger, or longer, to aid in oil cooling, you could be pushing the oil filter down to a dangerous height. Meaning you could risk hitting the oil filter on road debris and that would be real bad.
And air/air oil cooler is definitely the easiest and cheapest, compared to a big air/water setup. Same for intercoolers. I'll post up some pics of what we would be using for the basis of our kit.
If there is interest we'll try and make one up for you fellas.
I really don't think it would be difficult to either replace the OEM unit with another water/oil cooler or find another higher capacity unit. There's plenty of room to increase the stack height. My only concern would be adequate coolant flow. Typically those lines are 10mm or 12mm in diameter, so flow and resident time would be likely concerns.
I'm also pretty confident (but not 100% certain) the ECM has an oil temperature parameter we could access through the OBDII port, and with the advent of datalogging devices for OBDII, we could profile oil temp along with engine load and figure out if the water part of the cooling system is the limiting factor or if the oil/water part of the system is inadequate.
One thing for sure, you'll never see temps like this in street driving. The load just isn't high enough.
06-25-09, 04:00 PM
#17
I gotcha, I haven't ever gotten that deep into an IS-F engine bay. That may complicate things a bit.
I would really need to just borrow and IS-F for an hour or two and have my fabricatior take a look at it.
BTW, we carry Defi and Autometer gauges. I would recommend the Defi gauges though, we will have a new FS thread up in the vendor section within the next couple of days.
I would really need to just borrow and IS-F for an hour or two and have my fabricatior take a look at it.
BTW, we carry Defi and Autometer gauges. I would recommend the Defi gauges though, we will have a new FS thread up in the vendor section within the next couple of days.
06-25-09, 06:27 PM
#18
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Here's some more info for the thread. First, the ECM is completely unaware of oil temperature, only coolant temp is monitored, so there's no OBDII data stream for oil temp. 
Second, I found out what each of the bars mean on the oil temperature gauge, see below:
Second, I found out what each of the bars mean on the oil temperature gauge, see below:
06-26-09, 01:44 AM
#20
As soon as lance confirms that I can actually use it (ON my 350) I will get one.
Lance, could you double check for me, if I'll be able to read oil temp (Using the Gauge), with 350 ODBII port / or whatever I need to connect it to
Also, Can this be done for the transmission also (on the 350)?
06-26-09, 05:22 AM
#21
CoooL!
As soon as lance confirms that I can actually use it (ON my 350) I will get one.
Lance, could you double check for me, if I'll be able to read oil temp (Using the Gauge), with 350 ODBII port / or whatever I need to connect it to
Also, Can this be done for the transmission also (on the 350)?
As soon as lance confirms that I can actually use it (ON my 350) I will get one.
Lance, could you double check for me, if I'll be able to read oil temp (Using the Gauge), with 350 ODBII port / or whatever I need to connect it to
Also, Can this be done for the transmission also (on the 350)?
06-26-09, 10:34 AM
#22
Tech Info Resource
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CoooL!
As soon as lance confirms that I can actually use it (ON my 350) I will get one.
Lance, could you double check for me, if I'll be able to read oil temp (Using the Gauge), with 350 ODBII port / or whatever I need to connect it to
Also, Can this be done for the transmission also (on the 350)?
As soon as lance confirms that I can actually use it (ON my 350) I will get one.
Lance, could you double check for me, if I'll be able to read oil temp (Using the Gauge), with 350 ODBII port / or whatever I need to connect it to
Also, Can this be done for the transmission also (on the 350)?
Sounds like you need to pony up and get the F to me...
09-22-10, 11:31 PM
#25
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I hate thread bumping old posts.. But this is a good question..
What happens if Engine Oil Temp or Coolant Temp Max is reached???
Do you think it would cause full engine shutdown or stall??
I'm having a hard timing understanding how this IS-F shutdown on a straight away during the filming of this show..
Video:
http://www.streetfire.net/video/batt...sf_2061223.htm
From this thread: Battle of Supercars
However, I can only imagine between the all day tests and different takes, these guys were running them HOT out there and not paying attention.
Joe Z
Do you think it would cause full engine shutdown or stall??
I'm having a hard timing understanding how this IS-F shutdown on a straight away during the filming of this show..
Video:
http://www.streetfire.net/video/batt...sf_2061223.htm
From this thread: Battle of Supercars
However, I can only imagine between the all day tests and different takes, these guys were running them HOT out there and not paying attention.
Joe Z
09-23-10, 12:22 PM
#26
Tech Info Resource
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I ran my car in 102 degree heat at CMP. The oil temp did max out, but part of this was the way I was using the car. Since then I've not had anything higher than 2 bars from the top, even in 100 degree heat last June.
Without knowing what was on the dash, it's really hard to say what shut him down. I really doubt it was coolant - shutting off a hot engine is a recipe for immediate disaster, so I doubt Lexus would do anything more than put it in limp mode and continue to circulate coolant until the temp came down. Nobody shuts down their engine for oil temps, and the ECM is unaware of this anyway.
The only thing I can thing of is an ignition issue - overheating the plugs will cause the engine to shut down, but this would be the result of a faulty plug.
It's also possible there is a fuel cutoff (anti-fire roll over protection) and it malfunctioned. Hard to say for sure what it was, but resetting the ECM seemed to solve it.
FWIW, yes, the IS F could still use a bigger oil cooler and a bigger transmission cooler for track duty. The Tundra with a towing package has a really nice and very large ATF cooler in it. It might be easily adaptable...
Without knowing what was on the dash, it's really hard to say what shut him down. I really doubt it was coolant - shutting off a hot engine is a recipe for immediate disaster, so I doubt Lexus would do anything more than put it in limp mode and continue to circulate coolant until the temp came down. Nobody shuts down their engine for oil temps, and the ECM is unaware of this anyway.
The only thing I can thing of is an ignition issue - overheating the plugs will cause the engine to shut down, but this would be the result of a faulty plug.
It's also possible there is a fuel cutoff (anti-fire roll over protection) and it malfunctioned. Hard to say for sure what it was, but resetting the ECM seemed to solve it.
FWIW, yes, the IS F could still use a bigger oil cooler and a bigger transmission cooler for track duty. The Tundra with a towing package has a really nice and very large ATF cooler in it. It might be easily adaptable...
09-30-10, 12:41 PM
#29
Hi Lobux - can you please elaborate a bit on what you meant by the way you were using the car? Just want to see if there is something I should do on track to avoid maxing the oil temp. Thanks!
09-30-10, 01:39 PM
#30
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My corner speed was low and the first day when things were the worst I had the stability control on. It overworked the front brakes, so the engine was also working extra hard between the ambient heat, my slow driving, and the stability control overworking the engine. Day 2 was better, and the track weekends I've done since then have never seen the oil temps over the 5th bar.
