Cheaper than an oil cooler!!!!
#1
Wanting to eliviate as many unforseen problems as i could at the last trackday, i decided to remove the plastic under tray gaurd on the old Type R.
Before removal my engine oil temperature ran at about 85-90 degrees, after removal it has dropped to about 50-55 degrees. So a drop in oil temperature of between 30 and 40 degrees, all from a 2 minute job of removing the undertray.
Its probably been mentioned before, but i thought i`d mention it again as it must be a worthwhile and very cheap mod.
Paul
Before removal my engine oil temperature ran at about 85-90 degrees, after removal it has dropped to about 50-55 degrees. So a drop in oil temperature of between 30 and 40 degrees, all from a 2 minute job of removing the undertray.
Its probably been mentioned before, but i thought i`d mention it again as it must be a worthwhile and very cheap mod.
Paul
#2
Guest
Posts: n/a
My MY98 engine oil reaches 90 deg C during thrashing and in traffic but during cruising oil temperature reaches about 65-70 deg C and during rainy days the oil temp will drop further to about 60 deg C.My car does not have a splash guard cover like your type R.Temperature here is 30-33 deg C during the day time.
I guess that when you remove your splash guard cover your engine sump cover is exposed and is cool by ram air when your car is in forward motion.
You mentioned that your oil temp now is 50-55 degC,is that after thrashing or during cruise??
I guess that when you remove your splash guard cover your engine sump cover is exposed and is cool by ram air when your car is in forward motion.
You mentioned that your oil temp now is 50-55 degC,is that after thrashing or during cruise??
#3
Paul,
Back in the 70's when I used to play at rallying, the first thing I was advised to do PRIOR to fitting a Dural sumpguard, was to fit a 13 row oil cooler with stat, to compensate for the loss of cooling caused by the sump guard.
I never had an oil temp gauge to see what difference the sump guard made, but from what you have found, probably quite a bit.
Cheers MTR
Back in the 70's when I used to play at rallying, the first thing I was advised to do PRIOR to fitting a Dural sumpguard, was to fit a 13 row oil cooler with stat, to compensate for the loss of cooling caused by the sump guard.
I never had an oil temp gauge to see what difference the sump guard made, but from what you have found, probably quite a bit.
Cheers MTR
#4
Scooby Regular
Join Date: Mar 2000
Location: Gloucestershire, home of the lawnmower.
Posts: 4,531
Likes: 0
Received 0 Likes
on
0 Posts
Paul,
Sounds like a good mod. but did you consider the change of airflow under the car and in/out of the bonnet holes ?
It is very complex and you may find that although airflow has increased in areas with regards to oil temp, that now, the airflow through the radiator has been decreased. Or maybe the push through/pull through effect on the intercooler has been affected etc ?
Just something to think about.
To be honest, you will probably find no problems at all, just wanted to bring that to your attention. This kind of thing can really affect some cars.
Cheers
Ian
P.S. Just reread that and not only is my English poor it reads like I'm taking a pop. I'm not, honest.
Sounds like a good mod. but did you consider the change of airflow under the car and in/out of the bonnet holes ?
It is very complex and you may find that although airflow has increased in areas with regards to oil temp, that now, the airflow through the radiator has been decreased. Or maybe the push through/pull through effect on the intercooler has been affected etc ?
Just something to think about.
To be honest, you will probably find no problems at all, just wanted to bring that to your attention. This kind of thing can really affect some cars.
Cheers
Ian
P.S. Just reread that and not only is my English poor it reads like I'm taking a pop. I'm not, honest.
#5
Ecu Specialist
Guys this works, I have seen up to 40 degrees reduction in oil temp by taking off the undertray of any Scoob, some of you out there will remember me making that recomendation at the time cars were Linked, it does not affect air flow under bonnet, consider that all Sti "standard" models do not have an undertray, this was where I first noticed the difference ... up to 3 degrees of extra advance with out it !!!
Well worth putting up with the mud.
Bob
Well worth putting up with the mud.
Bob
#7
Another thing to consider is that all Scoobs AFAIK have an oil cooler incorporated into the water radiator. If you can reduce the water temperature, this should benefit the oil temperature.
I added some Water Wetter (£18) to the coolant in my car about a year ago which resulted in the water temperature needle stabilising at a "ten degree lower angle".
I remember Bob telling me that the water temperature gauge is not proportional so it is probably only of a small benefit (but it all counts!)
Has anyone tried this with an oil temp gauge ?
Thanks
Gavin
I added some Water Wetter (£18) to the coolant in my car about a year ago which resulted in the water temperature needle stabilising at a "ten degree lower angle".
I remember Bob telling me that the water temperature gauge is not proportional so it is probably only of a small benefit (but it all counts!)
Has anyone tried this with an oil temp gauge ?
Thanks
Gavin
Trending Topics
#8
Ecu Specialist
Venting will help of course but the effect is partly achieved by the sump being in cool air thus helping reduce temp. As soon as the car stops and sits in traffic the oil is stabilised at the engine coolant temp by the oil cooler. Consider also that if oil is above coolant temp then coolant is heated by oil. If the undertray is essential for use then fit an oil cooler, as a road car the undertray is not needed though IMHO.
#10
Ecu Specialist
Thats 98 deg C (ish)and around 82 as normal, my temps are much lower than that, still not severely excessive, oil type/manufacturer varies in temp, Silkolene runs cooler than Shell Helix for example. With undertray that would have been well up. If track is prime use then oil cooler is obviously good.
#11
Although it seems obvious that a removal of the sump tray will reduce oil temperature by increasing the flow of air round the sump, will this have knock on effects on the handling of the car. I understood the sump tray's purpose to be to smooth out the air flow underneath the car reducing drag and thereby reducing lift and making the car more stable at high speed.
ChrisW.
ChrisW.
#15
Ecu Specialist
Road spray still gets in on the heatshields, makes no real difference, vibration kills them not water, air flow does not affect car handling, all Sti 4 door/wagon come without it (and WRX).
Its a simple thing, the evidence speaks for itself as per original post.
Its a simple thing, the evidence speaks for itself as per original post.
#18
StanS,
I have a 5 door and it has the under engine protection, so I would imagine yours should.
Just to mention a point, oil is designed to run at temperatures of around 80-90 deg C, or there abouts, and this is where it offers it best protection. Running with oil too cold can reduce the effectiveness of the oil with possible detrimental effects.
I have a 5 door and it has the under engine protection, so I would imagine yours should.
Just to mention a point, oil is designed to run at temperatures of around 80-90 deg C, or there abouts, and this is where it offers it best protection. Running with oil too cold can reduce the effectiveness of the oil with possible detrimental effects.
#19
Scooby Regular
iTrader: (3)
Join Date: Nov 2000
Location: Norfolk
Posts: 2,239
Likes: 0
Received 0 Likes
on
0 Posts
Spatch
Am concerned about engine parameters so hoped to get oil press/temp and boost gauges fitted to a centre pod. Looks like it could be expensive labour to fit, so am asking in "Internal" how easy to diy.
Stan
Am concerned about engine parameters so hoped to get oil press/temp and boost gauges fitted to a centre pod. Looks like it could be expensive labour to fit, so am asking in "Internal" how easy to diy.
Stan
#21
Scooby Regular
iTrader: (3)
Join Date: Nov 2000
Location: Norfolk
Posts: 2,239
Likes: 0
Received 0 Likes
on
0 Posts
Spatch
The little red horns are appearing out of my head and I'm thinking of spending the gauge money on a DP instead. I'll get back if I get sensible and go for the gauges !!!!!!
Stan
The little red horns are appearing out of my head and I'm thinking of spending the gauge money on a DP instead. I'll get back if I get sensible and go for the gauges !!!!!!
Stan
Thread
Thread Starter
Forum
Replies
Last Post
Mattybr5@MB Developments
Full Cars Breaking For Spares
12
18 November 2015 07:03 AM