measured data: Stelvio NTX oil temp vs air temp [cool weather]

[pauldaytona]

Temp display can be done with android phone and elm327 BT adapter. It can log it too. software from https://play.google.com/store/apps/details?id=scantwin.scanmM5.AllinOne
http://christian.giupponi.free.fr/Android/SCANM5X.HTM

It can log all values and display in excel, or load it in logworks from Innovate.

[Xlratr]

Considering that the temperature readings shown in the above posts are average sump temperatures, or taken from the the drain plug which is quite an exposed place for a sensor, I would say the numbers look pretty reassuring. 80° measured as that point is ok I think.

I used the app that Paul mentioned above for a lot of logging runs earlier this year, (Stelvio) and I was usually running between 95 and 102°.

The valve covers never get really hot, because I think they're well insulated, and the plastic covers are cooler anyway. But I've still never had any Mayo there.

John


Sent from my iPad using Tapatalk

[lucian]

Thanks Ad b , I like the idea of a dash readable gauge . Haven't been able to find one to fit the griso. Might it be easier to tap the sump to fit the sensor? Dave

[slopokes]

 :+=copcar  i'm looking at anew 2009 stelvio but you guys scare the crap out of me :)

[Ad B]

Hi,

Temp display can be done with android phone and elm327 BT adapter. It can log it too. software from https://play.google.com/store/apps/details?id=scantwin.scanmM5.AllinOne
http://christian.giupponi.free.fr/Android/SCANM5X.HTM

It can log all values and display in excel, or load it in logworks from Innovate.

aha Paul, I didn't know that... I didn't know you could buy those parts for "normal" prices.
It sure looks nice and interesting.
I have to study.

Dave, don't destroy your sump. Go the way Paul describes.

Ad B

[Vasco DG]

Using the Android for logging purposes relies on the engine temperature sensor which screws into the RH head or barrel which is all well and good but probably doesn't accurately reflect the oil temperature.

The reason I actually prefer a dipstick thermometer is because of where it takes its reading which is slap-bang in the middle of the sump right next to the pick-up. Tapping into the sump, at any point, opens up the reading to further inaccuracy as despite there being a lot of constant movement of the oil it is always going to be cooler at the periphery of the sump and the sensor itself is going to be influenced by the temperature of the sump walls which will act as a heat sink for the sensor.

Pete

[pyoungbl]

:+=copcar  i'm looking at anew 2009 stelvio but you guys scare the crap out of me :)

The 2009 is a different animal.  Much smaller cooler, cam in a different location, lots of changes.  Personally, I'd rather have the '12-'13-'14 NTX in spite of this thread...oh wait, I DO have one!

Peter Y.

[Vasco DG]

The 2009 is a different animal.  Much smaller cooler, cam in a different location, lots of changes.  Personally, I'd rather have the '12-'13-'14 NTX in spite of this thread...oh wait, I DO have one!

Peter Y.

Errr? No. All Stelvios use the 8V. All 1200-8V's are the same architecture. There have been some minor changes to certain parts, (The size of the tensioner reservoirs for example.) but other than that the engines are all pretty much of a muchness.

Pete

[pyoungbl]

OK, I thought the '09 was still using the 4V engine.  If it's the 8V I am wrong.  One more example of how Internet traffic can be wrong.  The cooler is still much larger on the later versions.

Peter Y.

[Vasco DG]

All Stelvios are 8V's. I think the confusion comes from the factory as for a variety of models they use 8V as a descriptor and then for others they use 4V. It's very irritating as it causes exactly the confusion you're experiencing. Probably better to just call them '2VPC' for the pushrod engined bikes and '4VPC' for the Hi-Cams but that'll probably only confuse things further! ;D

Pete

[lucian]

Dave, don't destroy your sump. Go the way Paul describes.

Point taken, thanks.

[brlawson]

Peter,

My curiosity was based on the fact that my 2010 and your 2012 both have flat tappet engines but yours has a bigger oil cooler. While mine does get a bit hot in slow moving traffic on a 90+ degree day it still seems to manage. Just wondering what the factory justification was to move to a bigger cooler.

[Vasco DG]

Who knows. If your bike is running rough in hot weather it's more to do with the fueling correction in the closed loop area of the map than the engine overheating per-se. That's pretty easily dealt with.

Pete

[ChuckH]

Bruce,

One of the other changes between the '10's (small oil cooler) and '12's (larger oil cooler) was the addition of the second O2 sensor and the separate ECU control of the two cylinders.  Maybe that entered into the decision to make the increase in cooler size, although I can't imagine the separate O2 sensor caused an increase in engine oil temperature.

Or -- it could have been something as simple as they were using the larger cooler on one of their other bikes (possibly an Aprillia) and buying in a larger quantity made it less expensive. 

Who knows?

[Larry]

Well my Stelvio must be an exception to the general rule displayed here.

It never runs below 100c (dipstick thermometer tested in boiling water) even in cold weather, and usually 120c if ambient temp is 15 - 25c.
Last week in 34c ambient temp after a 100k/hr freeway run of 30klms it was reading a tad over 130c - that's pretty hot me thinks.
Doesn't in any way seem to effect the bike's running tho.

Larry

[Daniel Kalal]

It never runs below 100c...even in cold weather...

That's curious.  I can think of no reason why this would vary substantially from bike to bike (yes; crosswinds make a difference along with other variables besides just outside temperature).  The chart I presented is down to 3 degrees Celsius.  How cold is the air when you still see oil of 100 degrees Celsius?

[Larry]

That's curious.  I can think of no reason why this would vary substantially from bike to bike (yes; crosswinds make a difference along with other variables besides just outside temperature).  The chart I presented is down to 3 degrees Celsius.  How cold is the air when you still see oil of 100 degrees Celsius?

It doesn't get that cold here in low land Victoria Australia.
But between 10c and 15c it will get to 100c - mind you that is after a decent thrashing through the twisted bits of hilly stuff, where I like to keep the revs around the 5000rpm and above.
Below 10c it'll be around 80-90c.

But yesterday it was overcast and showery with ambient temp at 18c and it was 100c after 30klms of 100kph freeway riding in showers, and 110c coming back but no showers.

Go figure ;)

[rocker59]

...the decision to make the increase in cooler size, 

...it could have been something as simple as they were using the larger cooler on one of their other bikes (possibly an Aprillia) and buying in a larger quantity made it less expensive. 
 

That would be "The Guzzi Way".    :D

[leafman60]

I inadvertently came across some posting about oil temperature on the KTM ADV website.  Some poor guy had troubles with a new bike overheating and the dealer had to bleed the cooling system.  Various comments indicate that the operating range observed for these bikes varied from "170'sF" to low "200's" in heavy traffic.


"15 minutes later I was out for my second test ride and the oil temp stayed in the 170s."

"The hottest I have seen my oil sitting in traffic was 214f with break in oil and 209f with Motorex Cross Power."


This seems inline with observed Stelvio temps posted earlier.

[leafman60]

Bump

For recent topics about engine wear.

[John A]

brakeconnect.com  part number BQ187 is an adapter. Having trouble making a live link to it on this infernal iPad

[Nic in Western NYS]

"even if the water does sublime off it "  Maybe I'm the only one who didn't know definition #10 for "sublime":

verb (used without object), sublimed, subliming.
#10.
Chemistry. to volatilize from the solid state to a gas, and then condense again as a solid without passing through the liquid state

Thanks Pete!