The Roadster NA Journey Begins

MattR · Postby **MattR** » Sat Nov 30, 2013 1:13 pm

Nice to see the car going well.

Next track day at QR we'll find you a second or so easily if you want to Mark, there's a few spots I can get you some time from looking at those videos, but will need to have the car all run in and ready to wring its neck properly. A couple of lines you take and a couple of gear change points that aren't needed.

Magpie · Postby **Magpie** » Sat Nov 30, 2013 1:34 pm

MattR wrote:Nice to see the car going well.

Next track day at QR we'll find you a second or so easily if you want to Mark, there's a few spots I can get you some time from looking at those videos, but will need to have the car all run in and ready to wring its neck properly. A couple of lines you take and a couple of gear change points that aren't needed.

Much appreciated MattR, I will take you up on the offer

I have had a look at the data and the car did not rev past 6,000 and it was mainly 4th and 5th gear so it has a lot more to give. The rumour is that when it is fully tuned the engine will be limited to 8,250 rpm, however it is capable of more. I'm happy to sit down with you to review the rest of the videos (about 100 mins), just let me know a suitable fee

I'm seeing if I can merge the VBOX video/GPS data with the Innovate via DashWare.

mmx005 · Postby **mmx005** » Sat Nov 30, 2013 11:01 pm

120deg oil temps do sound about right, if I flog the living daylights out of my car I will see 120s, especially with 5k+ old oil, regularly see 100s ish driving down the freeway.

corners · Postby **corners** » Mon Dec 02, 2013 9:15 am

mmx005 wrote:120deg oil temps do sound about right, if I flog the living daylights out of my car I will see 120s, especially with 5k+ old oil, regularly see 100s ish driving down the freeway.

With or without an oil cooler?

Magpie · Postby **Magpie** » Mon Dec 02, 2013 10:03 am

It has the PWR radiator/oil cooler combo. However, there is the possibility that the sensors need to be calibrated and hence the temperature may not be as high as being reported. Jason will be taking out all the temp sensors out and testing them (heated oil bath) to check their voltage vs temperature. Once we have this data the temperatures can be re-calibrated.

A good feature of Logworks (Innovate) that I use for reading the data from the sensors is that I can apply new parameters to each of the data channels and have the new correct values at any point. Essentially the data from the sensors is stored as a volt reading and then the volt is 'mapped' to display a value.

As previously noted we had a problem with the RPM not working on the cluster, however it was recorded by the Innovate. By calculating RPM from tyre size/speed/gear/final drive it was possible to calculate an adjustment to be applied to the RPM channel to have it display the correct RPM.

I also want to play with the data from the ride height to get some data on downforce/aero on the track, however I will have to filter out the areas of excessive aceleration/braking/cornerning. Again logworks has math channels that could be used to assist with the filtering out of this data, or just exclude data on a certain G-Force.

I may do a thread on data logging, however there does not appear to be a great interest.

charlie_91 · Postby **charlie_91** » Mon Dec 02, 2013 2:51 pm

Sounds like a blast! Congrats

mmx005 · Postby **mmx005** » Thu Dec 05, 2013 1:00 pm

Corners, my readings are with no oil cooler. I have all the bits I need for a oil cooler, relocation and thermostat setup, but I need some time to install and rearrange my engine bay.

corners · Postby **corners** » Thu Dec 05, 2013 2:29 pm

mmx005 wrote:Corners, my readings are with no oil cooler. I have all the bits I need for a oil cooler, relocation and thermostat setup, but I need some time to install and rearrange my engine bay.

Thought so! Magpies readings are with a cooler so I think thats why he is concerned

Magpie · Postby **Magpie** » Thu Dec 05, 2013 3:18 pm

Correct Corners. However once we calibrate the sensors we should know the truth.

MattR · Postby **MattR** » Thu Dec 05, 2013 5:39 pm

Well, did it go bang with the oil temps reading high? How many laps in a row did you do? If around 10 or so in each session, then it'll be fine..... :lol:

But I would be surprised if the oil is getting that hot running a cooler. My old L series motors got the oil up around 120 on the track with no oil coolers and never caused me problems, running 2.2l L18 4 cylinder at about 13:1 compression, when avgas was plentiful and cheap, and a couple of reasonable L28's. These motors went a couple of seasons between pulling rocker covers off let alone a freshen up.

I think you might find once the sensors are calibrated that you are only just getting the oil up to temp.

Magpie · Postby **Magpie** » Thu Dec 05, 2013 7:12 pm

MattR I tend to agree that senors are wrong. However, it is safer to assume that they are right for the moment. Looking at the data oil pressures were fine and there was no drop in oil pressure as the temps got up to 120.

Hopefully Jason will have the calibration done by the time I pick her up. He had already found a difference between the haltech sensor and the innovate sensor in the water temps. I also have a warning light (independent) if the water or oil go over 120. Plus the haltech is set up to not rev over 3,500 if water goes over 120 and not exceed 6,500 if water goes over 100. From memory I don't recall the engine being limited, however it never went over 6,000.

gslender · Postby **gslender** » Thu Dec 05, 2013 8:01 pm

I didn't think water temp getting over 100 is an issue. Cooling under pressure should be safe to 120, possibly more in some cases. It would depend on where it is measured and the quality of the heat exchanger.

G

sailaholic · Postby **sailaholic** » Fri Dec 06, 2013 9:47 am

gslender wrote:I didn't think water temp getting over 100 is an issue. Cooling under pressure should be safe to 120, possibly more in some cases. It would depend on where it is measured and the quality of the heat exchanger.

G

But if your thermostat is wide open around 80, then 20 degree creep indicates problems I would have thought.

Also I assume pinging become more of an issue at higher head temperatures, but you might know more then me there G.

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Postby **NitroDann** » Fri Dec 06, 2013 10:01 am

You wont blow a gasket until 115 or 120, but max power is around 83-85c across just about every gasoline engine ever, and the higher you go the more chance of detonation you will get.

Dann

corners · Postby **corners** » Fri Dec 06, 2013 10:15 am

NitroDann wrote:You wont blow a gasket until 115 or 120, but max power is around 83-85c across just about every gasoline engine ever, and the higher you go the more chance of detonation you will get.

Dann

Which I believe is increased when you add the heat of a turbo