All posts by Bill Strong

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.

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.

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.


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.

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.

RockAuto Close Out Cheat Sheet

MR2OC Rock Auto Clearance Feeds

1984 Toyota MR2 – 4AGE1985 Toyota MR2 – 4AGE

1986 Toyota MR2 – 4AGE

1987 Toyota MR2 – 4AGE

1988 Toyota MR2 – 4AGE4AGZE

1989 Toyota MR2 – 4AGE4AGZE

1990 Toyota MR2 – 5SFE3SGTE1991 Toyota MR2 – 5SFE3SGTE

1992 Toyota MR2 – 5SFE3SGTE

1993 Toyota MR2 – 5SFE3SGTE

1994 Toyota MR2 – 5SFE3SGTE

1995 Toyota MR2 – 5SFE3SGTE






1995 Toyota Matrix XRX – 2ZZGE

1995 Toyota Celica GTS – 2ZZGE

1995 Toyota Camry – 2AZFE1MZFE3MZFE

2010 Toyota Camry XLE – 2ARFE2GRFE

RockAuto Website – Interactive CatalogText Catalog



How to convert your Toyota 3MZ electronic throttle to wire and TPS

Click here to see how I did this simple conversion.  The link is to my facebook page

2015 Racing Strong Toyota MR2’s. Two cars = twice the fun


A few early announcements for 2015! First off we are building another car. A 1992 Toyota MR2-GR will join the #79 MR2 GTv6 in ChumpCar, WRL and AER racing events in 2015. The new car 179 will be powered by a 275hp Toyota 2GR-FE V6.

Zipline Welding Booms and McKibbin’s Irish Pub Montreal will continue their support of RSm cars in 2015. Lincoln Electric will again be our official supplier of welding equipment. will be the official RSm OE used and new parts supplier. is now the official brake supplier for the Raybestos race brake pads. New for 2015 we have inked a deal with AutoMeter to supply race winning gauges so my drivers can keep up to date on the condition of our V6 engines. will be supplying the needed parts to complete the monster motor swap into the MR2 chassis. Moroso will again be supplying oil products from Accumulators to Aluminum Oil Pans.

Racing Strong will again be working along to develop new and exciting products for the Toyota Mr2 that are race proven. A new big brake system using Toyota / Lexus OE parts and custom Raybestos pads is just one of the new systems that will be available soon. is now the official RSm race and utility light supplier!

2014 racing starts off great for MR2’s!

Yellow 79 at VIR South
Yellow 79 at VIR South
2014 has started off awesome for MR2s in endurance racing.
December 2013 saw Racing Strong finishing 3rd in the ice bowl championship on the Patriot Course at VIR in Virginia. 10 hours of racing in the ice and rain was incredibly fun with our yellow 3MZ v6 powered MR2.
So to start 2014 we headed to Road Atlanta in late February along with Team Biohazard MR2 owned by Troy Truglio to race for 14 hours. We started out pretty good getting into 5nd, and then fell back to 88th place when Racing Strong driver and 2013 Ohio SCCA Driver of the Year (MK1 MR2 D-Production)  Mike Helm lost the right front tie rod on the 1991 MR2 braking into turn 10A. He made it back into the pits where we set out to fix it. Found out the tie rod was frozen on the rack side. So when I would align the wheels it basically unscrewed itself. Lesson learned. We got the car back out on the track in about 19 minutes after reinstalling the rod, and doing a quick alignment.
All the time this is happening Troy and his team in the 3MZ V6 powered Biohazard MR2 take the race lead.
We battle back and get back into the low 30s, but at the 12 hour mark I get a radio call that the car broke. Gene says he thinks the transaxle let go. Tow truck gets back to the pit and we immediately see that the tire is no longer connected to the car, it is sitting up in the wheel well. The Timken Camry hub broke in two at the flange, and then the axle tip broke from the stress.
Troy and his team ends up winning the first race of 2014 in his badass winged 91 V6 MR2. We load up and head home to figure out why the axle broke.
After a few emails to different people, Timkin emails me and basically says that the Camry hub broke due to stress that it was not designed to take. So I picked some 1998 turbo uprights with hubs off a MR2OC member and installed those.
So we head down to Virginia International Raceway near Danville, Virginia for the ChumpCar 12-hour endurance race.
I have Gene Bird owner of Zipline Welding Booms and Mike Helm driving for me. Troy is there with his MR2. He has a new driver, and he is also testing out a few new things.
We start the race pretty well in 8th and work our way into the top 5. A few times we take the lead. I am really concentrating on learning and trying out new “race craft”, trying to time pit stops and getting our pit stops done so we spend no more than 5-minutes total in the pit. We have minimum 5-minute pit stop rules. Safety thing. So I have my 13-year old son Ian sitting on the stopwatch letting us know exactly how we are doing as we fuel and swap drivers and cool suit ice. It is working great.
Troy has some issues, one of his drivers hits something and the left front strut breaks. He also had some ECU issues that were fixed with a quick ECU swap. But he was basically out of contention early. But he was still fast as hell when he was out there.
On the second to last stint Gene takes over and is doing well. He is in 2nd and a big rain comes. The third place car is an Acura Legend V6 and he is very close to catching us.I was pulling faster laps than Gene, so we made a decision to pull him in 20 minutes early when a local yellow popped up. I hopped in, we added 15 gallons of high test fuel, and I headed out on a wet track. Really really NOT fun in the MR2!
I kept us in 2nd until the 3rd place car passed me. I had a very big issue with third gear. It worked sometimes. Under hard braking it may be there, or it may not. And third is a very important gear on the South Course! Troy was coaching me over the radio letting me know where the Acura was.When he passed me, I basically gave up. Save the car and settle for 3rd and a podium. He basically called out my manhood at that moment. I agreed, balls out. 1st or last. That is why we race. I caught back up to the Acura and we both came up on slower traffic. I am really good in traffic. I was able to get past him and boxed him and then sneak in between two cars on Oak Tree leaving him stuck behind me. I then put down the fastest lap I have ever down on VIR South. 01:25.976. What is wild is that I did that in traffic!
We ended up finishing 2nd overall. My best finish racing this yellow V6 powered MR2 over the past 3 years.
Great video of the Acura chasing me down at the end of the race.
Inside the V6 MR2 with Mike Helm driving. Mike set our fastest lap at 01:25.157.
Our next race is at Watkins Glen May 23 – 25 for three races, 6 hour, 12-hour and a 6-hour. We are bringing spare engines! lol. Come join us if you want to see some great racing!

NHTSA Toyota MR2 Crash Test Results

Screen Shot 2014-02-13 at 4.25.47 PM

I know you just want to see the data! You will need to have a PDF reader installed to view these. 

1985 Toyota MR2

1987 Toyota MR2

1991 Toyota MR2 N/A

1991 Toyota MR2 Turbo


Racing Strong Motorsports Endurance MR2 GTv6 Endurance Racing Team Finishes 3rd at VIR Regional Championship

1991 MR2 GTv6 at speed
A little bit of off roading could not stop the RSm Toyota MR2 GTv6!

RSm’s 1991 Toyota MR2 GTv6 finished 3rd in the 2013 Optima Batteries ChumpCar World Series Eastern Division Championship at VIR.

Ice and freezing rain could not stop the power and reliability of the Camry V6 powered MR2 against some of the fastest machines in the ChumpCar series.

Gene Bird, Mike Helm and Bill Strong piloted the MR2 RSm’s best finish in 4 years of racing in the ChumpCar World Series.

2014 brings some big changes to RSm and endurance racing. 8 races planned with more possible.

ChumpCar World Series Eastern Regional Series 3rd place
RSm #79 Toyota MR2 GTv6