What has been the best performance modification / tool for me?

I get asked this a lot online and at the track. “Bill, what has been the best mod you have done on your race car? Is it the engine swaps? The alignment? Aero?”

No.

My answer is always my Aim Solo lap timer.
http://www.aimsports.com/

Troy Trugleo's Biohazard V6 Toyota MR2 at the 2013 ChumpCar World Series VIR-24
Troy Trugleo’s Biohazard V6 Toyota MR2 at the 2013 ChumpCar World Series VIR-24

At the 2013 VIR 24-hour race I was driving Troy Trugleo’s Biohazard V6 Toyota MR2.  Kevin Tulay is the king in Biohazard. FTDs all over the country in that car. But I was lapping an easy 30 seconds slower then Kevin per lap. I could not figure out why. I know I will never be as fast as him, but hell, I should at least be within 10 seconds of him!

On the dash of the Biohazard MR2 sits this lap timer. It is a predictive lap timer. It lets you know what your time will be at the end of the lap at sectors on the track. So if I screw up a corner, my lap time increases. Or I get that apex perfect my lap time decreases on the display. It shows what my session FTD is as compared to the event FTD. Oh, FTD stands for “fastest time of day”.

So I am struggling with Troys car. Ham fisting it around the fast course. Each lap I am trying to assess why I am going so slow. Then I realize that I am not relaxed. Kevin makes driving this car look so easy.  You can see it in the videos. Relaxed, composed, even with the car sideways or in traffic. And even after 2 years of racing since that time, I remember the moment as if it was yesterday…

I told myself to relax.

And boom! 10 seconds faster.

So now I am relaxed. I am watching the Aim Solo on the dash as I take corners, or go down the straight. I discover little things can make a big difference in my lap times. In my head i thought that taking a certain line was faster because I could maintain momentum. But I was wrong, less distance traveled made a huge difference in lap times. At the end of the session I was still slower than Kevin, but I had gained a huge amount of time on him, and felt better with driving Troys awesome MR2.

Aim Solo ad
Aim Solo ad

 

So I looked at them on the web. Pricey. $399.

I then asked my team to give me lap times in the car, but they just told me to shut up and drive. lol. So I did.

I drove for Troy another time and after that told myself I was going to save the money up and get my own.

So when I went on my own with the Racing Strong Motorsports Endurance Racing Team, purchased an Aim Solo. It took a couple of races before I got it installed and working, and a few more to actually understand what I was looking at. The Aim Solo also an excellent data collector. The Solo collects track map GPS data, lap times, G-forces, braking forces, acceleration forces, total laps, distance driven and speeds. They have this Windows software that you can use to analyze the race to see where you are doing well or where you suck at racing. And a really cool feature is that we can compare drivers in the same car at the same track. As we collect data, we can even see how well the chassis is doing from race to race, year to year.

My drivers love it, and before I am even home they are begging for the data. And as a car owner, trying to sell seats, it is a valuable value add for the paying drivers. And I have seen huge improvements in my drivers. They drive smoother, better lines, and we have had less crashes and have done way better at collecting trophies then we did prior to the lap timer.

Now the Aim Solo is not perfect. I wish it had other features. And guess what? Aim Sports has it in the SoloDL. At $699 it is an awesome data logger that also does the normal predictive lap timing stuff. But this guy plugs into your OBDII/CanBus port and can record everything the ECU sees, which is a huge amount of useful data as a car owner.

Now one thing I do suggest if you get an Aim data logger/timing unit. Go to an Aim sponsored class. Or at least go visit the Aim YouTube website for how to videos. Even my less powerful unit can do some incredible performance envelope data to show how our drivers are doing.

Aim Sports YouTube Channel
https://www.youtube.com/user/aimdata

So the predictive lap timer is the best single drivers performance aid we have seen so far. It has allowed my drivers to make my car faster and safer.

So what is next? Saving up my cash to buy a Aim Sports MXL dashboard for the new MR2 chassis. Ballenger Motorsports is a AIM Sports Dealer that also sells any needed sensors to optimize that data recording. http://bmotorsports.com/shop/

Aim Sports MXL
Aim Sports MXL

 

update:

I forgot… You can take this data, and use it with software to combine an overlay to your in car Go-Pro or ChaseCam videos like I did here. This is Troy driving my yellow #79 MR2 at this years VIR 12-hour race.

Choose the proper transmission oil for your Toyota transmission

Red Line Oil Logo

First off… There are a few well known shops that continue to fill up the E-series, S-series and C-series with GL-5 oil. This is really really bad for the long term life of your gear box.

Why?
http://www.widman.biz/uploads/Transaxle_oil.pdf
There are not that many oils left that are GL4 only.That is why everyone recommends Redline MT90. It is one of the best and does a really good job of lubricating the Toyota gearboxes.

http://www.redlineoil.com/product.aspx?pid=46&pcid=7

Lightweight Shockproof…
http://www.redlineoil.com/product.aspx?pid=43&pcid=8
Warning – Avoid use with pumps, coolers, and filters as unique medium and affinity for metal can cause clogging.
Designed for wet sump transmissions and differentials with splash lubrication.
The C-series and S-series are splash lube while the E-series is pumped and has a cooler.

Same with Super lightweight shock proof.
http://www.redlineoil.com/product.aspx?pid=42&pcid=8
Avoid use with pumps, coolers, and filters as unique medium and affinity for metal can cause clogging.
Designed for wet sump transmissions and differentials with splash lubrication.

Syncro with GL5 coating

You can see in picture number 1 a MR2 E153 syncro that has used a GL5 oil. It is black. It should be a shiny brass color. As the syncros do their job, that layer is a self sacrificing layer, and as it is pulled off, it pulls a micron of brass from the syncro. That adds up and before long you are having to spend $1000+ on a E153 rebuild. Shops love that.

That layer does have a good side. It makes used up transaxle seem good again. That is why so many unqualified people rave about using the wrong oil in your gearbox. It makes it shift again without grinding. Instead if fixing the original problem, you now have cost yourself even more money as almost everything will need replacing in the gear box.

5th gear E153

Good E153 5th gear syncro. Bright yellow brass. No GL5 coating.

I endurance race a E153 transaxle.

I have tried the GL4/GL5 Lucas 75w90.
It works good. A bit thick in the cold mornings. seems thicker than Redline.

I spoke with Lucas reps at the Charlotte N.C. race car convention in February 2015. They said the following – You CAN’T and SHOULD NOT run the 100% Lucas 75w90 trans oil in the E-Series. Even though it says GL4/GL5, it is NOT designed for our cases for the same reason why you don’t use LWSP. You have to water it down with another Lucas oil, and I am getting their tech folks to get me that info. I’ll pass it on once I find out.

So, bottom line.
The people that make the oils, they have told us what to use, and what not to use. They say DO NOT use 100% GL5 oil. Syncromesh is also an oil to stay away from in our boxes.

Do your own research. Just don’t go by info you find on the Internet alone. Contact the companies that make the oil. They will tell you exactly what you need to use. They want your gearboxes lasting, their reputation depends on it.

Testing the new Zipline Alignment Stands

Zipline Alignment Stand

I was speaking to our sponsor and driver Gene Bird about some stands for the race car that would allow us to easily do alignments in the shop or at the track. It needs to be safe and easy to use. Then it was mentioned that having something that would also allow us to easily set ride height and corner balance the race car would make life really easy. I made a plan up and Gene made a few suggestions and then set off to his mad laboratory at Bird Manufacturing.

Soon he presented this sweet stand to us at the VIR ChumpCar 12-Hour enduro. We did a quick test and it worked well. We then tried it out a couple of weeks ago on Mike Helm’s EP MK1 MR2 at the SCCA Majors Tour when they visited VIR. It worked great on his 4×100 lug pattern as it did on my 5×114.3 of my MK2 MR2.  The design idea was that it should work with all versions of the Toyota MR2.

The design allows the camber, toe and caster to easily be set. There is no need for slip plates as the stand is on heavy duty casters that allow it to twist and turn as you adjust the setting of the toe. The camber is set as the stand has built in tilt.

Simple installation. Jack the chassis up. Remove the wheels. Attach all four stands to the wheel hub, torquing the lug nuts in place. Put the plate under the stand, and slowly drop the car onto the plate, adjusting the plate as the suspension compresses. Let the car settle for a few minutes. I pushed down on the chassis to test how stable the system is. and it is just like the chassis sitting on jack stands.

The simple design allows the use of either high dollar camber /caster gauges or something as simple as you iPhone or Android with a angle finder app.

zipline2

I am going to make a set of aluminum plates with adjustable feet that this can sit on to allow us to make a level platform to do alignments on. This will also allow us to get the correct rake as we use larger diameter tires in the rear, which are taller than the fronts.

We will also be able to put the scales on the platforms, with the stands on top of the scales. We can then corner weight the car when we start using coil over dampers.  Having easy access to the springs and suspension will make alignments a breeze, either at the shop, or at the track.

For more info contact Gene at:
Bird Manufacturing & Design
51 Station Street
Johnstown, PA 15905
(814) 288-6464

Drive shaft repair

We had problems with the right rear drive shaft on the number 79 MR2 at the vir 12 hour race . So yesterday I started tearing down the axle and found that the intermediate shaft bearing was on its way out. So a new one was ordered.

image
Inner CV inner race worn and damaged

The inner cv was torn down first and I discovered that the inner race was severely damaged. The cage had just a little bit of wear. So the inner race and cage were replaced.

image
Crack in outer CV cage.

I next tackled the outer CV. As seen above the cage was cracked. This is a failure that would spon end a race prematurely.

image

On the left is a MR2 turbo outer splined drive unit and thr right one is from a 94 Camry. I used this eith a new cage and a good used inner race.

image
Assembled outer CV.

I need to find a supplier for the MR2 inner races. The Camry CV works, but the ones i have use a different spline count, so you end up reusing the worn inner race on the MR2 shaft.