Jim’s Garage – on the Air!

June 16, 2008

This coming Saturday evening – June 21 – I will be a guest on the Pat Desmarais show on WBZ radio out of Boston, MA.  It is an AM station and the frequency is 1030.  Since it is AM it reaches 38 states as well as parts of Canada.

If you always had questions, but never wrote in a comment to this blog here is your chance to call up and get on the air with it.  The call-in number to the radio station is 617-254-1030. 

Unless a big news story breaks the show will go from 7:00 PM until 9:00 PM.  This should be a lot of fun and I am looking forward to it.


Factory Five Holds a Party

June 15, 2008

My first day on the Cape was also a day of celebration at Factory Five.  So I drove back over the canal and stopped by their shop in Wareham, MA to see the show.

It was full of customers with their roadsters and coupes as well as the newest F5 kit, the mid-engined GTM.

While I am sure that this rankles Carol Shelby to no end the participants were really enjoying themselves.  Lined up with their completed cars, trading stories and experiences, they were having a great time.

The variations of the roadsters is amazing.  I complete the Factory Five build school back in 2005 and am still fascinated by the variety of ways that people can, and have, made their version very special and unique.

One guy had added some square bumps to his trunk lid because he had learned that when the team had showed up at LeMans to run they were confronted with a requirement that the trunk have a suitcase in it.  The story goes that they put the standard suitcase in the trunk and slammed the lid a few times until the aluminum bent enough to fit, leaving the impressions of the corners of the suitcase in the trunk lid.

The GTM cars were spectacular to look over.  So much ingenuity went into each build.  Many builders used the Z06 suspensions and as a result they had to enlarge the fenders to accommodate the larger wheels and tires.  They also added scoops to provide additional intake to the engine.  They then added a scoop to the roof in order to gain additional cooling air in to the interior of the car.

Browsing the coupes, I met Willie Hough who not only brought his own coupe, but he manufactured the scoops and larger fenders for the GTM cars.

Willie, it turned out, knew John Harkness, and old friend of mine who used to own a shop in Marblehead, MA that I would used to balance and line bore engines for me.  Willie told me how he first met John and how John got him involved in racing.  They both worked on the TransAm team of Sam Posey in the 70’s.  It’s always surprising how connected the racing community is.

There was a dyno at the show and owners were taking advantage of that to see just what kind of numbers their cars were putting out.  It also meant that the crowd was treated to the roar of the big V8 engines as they strained to get the rollers spinning.

The event had a huge turnout and it was fun to see all the enthusiastic owners and admirers.  It was a hot day and along toward mid-day I jumped back into my Evo and headed back to the Cape where I will spend the next couple of weeks.


BMW Design Stretches the Imagination

June 12, 2008

This is a very interesting design project by BMW design.  I’ll let the video talk for itself.  I think its a great concept.


Road Trip – an Early Visit to Cape Cod

June 12, 2008

The rumors are true.  I am off on another road trip.  This time it is a visit to my home town on Cape Cod. 

It is a long drive.  Usually about 12-14 hours, but the great part for me is opening up my car’s windows when I get to the bridge crossing the canal.

While I am up on the peninsula there is a good chance that I will be on WBZ radio doing an interview on this blog.  If you are in range of the station, please tune in and call up with any questions.

 

Cheers.


Video from VIR HPDE Session May 29

June 8, 2008

Here are a couple of photos from one of the run group participants.  Thanks to Rick’s wife Debbie!

Here are a set of four videos  that make up the entire last session for me.


 

About My Evolution VIII MR

June 8, 2008

 

Starting with a 2005 Mitsubishi Lancer Evolution VIII MR my quest was to put together a high performance street car that I could take to a road racing track and find out what it was made of.

This entry is an explanation of what modifications I made to the basic car and why.  Just about all of them I would not change. 

I had previous experience with turbo cars and the Mitsubishi’s 4G63 engine.  I found that turbocharged cars really respond to opening up the intake and exhaust.  I also came to realize that the 4G63 is quite a stout engine.  It has a lot of capacity in terms of power over the stock rating.

My first modification was to exchange the stock exhaust system after the cat for a Greddy Titanium system that weighs in at about nine pounds versus the fifty-five pounds of the stock system.  Then I changed out the stock air filter element for one by K&N.  My research showed me that the stock air intake design would work well even up to 400 hp.  It is a good design that pulls cooler air right from the area at the front of the hood.  I also got a reflash for the car’s ECU that allowed the mods to free up thirty or more horse power.

That was a good enough start and I then concentrated on the car’s handling.  The MR has a fantastic suspension to start with.  Bilstein shocks and struts along with some complementary springs provide a better ride than the standard GSR version yet loses nothing in terms of handling.  So I chose to find ways to further stiffen up the already ridged chassis.  First I found that Mistsubishi’s parts bin had a nice aluminum rear strut brace as well as a “trunk bar” that stiffened up behind the rear of the trunk.

The front suspension came with a pair of bars that do a very good job of keeping the lower suspension mounts from flexing, but I found a much more complex brace made up of stainless steel to replace the two bars with.

The rear anti-roll bar was replaced by an adjustable unit from Road Race Engineering.  Since the new rear bar came with poly bushings I replaced the stock front bushings with poly as well.  They squeak a bit, even with plenty of synthetic grease applied, but that is something I can live with.

Road Race Engineering recommended Project Mu Blue brake pads for the street and I picked up a set of Brembo rotors to go with them.  I use Ate brake fluid, alternating between the yellow and the blue. 

Eventually I chose to replace the springs with something that would drop the car just a bit, but not compromise the ride.  I chose Swift Springs from MachV.  When you change the ride height you must not ignore the other changes like the front roll center drop that comes along with it.  Fortunately Whiteline makes a couple of kits to address that problem as well as rear bump steer.  With all that I ended up with a reduction of 1.4″ in the front and 0.8″ in the rear.  My friends evaluated the ride and pronounced that it was a better ride than stock as well as providing better cornering capabilities.  Naturally I did an alignment to go with the change and found having negative two degrees camber on all four corners with zero toe in front was perfect.  The rear toe was 1/16″ total.

By that time I had given up on the Yokohama Advan tires that Mitsubishi sold the car with.  I went through three sets and while I found them very sticky, they were also noisy and got very sensitive to steering input as they lost tread. They were replaced with Bridgestone Potenza RE-01R tires that are also very sticky, cheaper, quiet, and have better tread wear.  Nitrogen keeps them round.

Power, can you ever have enough?  With the suspension sorted out and top braking capabilities I decided to upgrade the intercooler with a new Greddy unit that was much larger than stock, with no modification of the bumper or cover to fit.  The downpipe was replaced by a Tanabe unit from Road Race Engineering again as well as a high flow cat.  GSC Stage 1 cams replaced the stock pair.  These kinds of mods also require an upgrade to the fuel pump to a Walbro 255 lph pump.  The Evos from 2006 came with a metal version of the recirculation valve (often called a BOV) so I replaced my plastic one with a metal version.  An ECU tune from Jestr made the most of all those modifications producing on the order of 400 wheel horsepower.

When I take the car to a road racing track I swap out the street rotors and pads for a set of nice stock rotors and Raybestos ST-42 pads.  I always freshen up the brake fluid before an event.

Aerodynamics were also considered to complement all the other modifications.  Mitsubishi had a “wicker bill” that I added to the rear wing and the front got a JDM carbon fiber front lip installed.  In the rear an APR rear aero diffuser was put in place to clean up the air flow under the car.

On the cosmetic side I changed out the headlights and tail lights for some ones from an UK version MR.  In the US the lights had a lot of chrome in them and I preferred the black surrounds along with amber turn signal lenses.  The headlights required that I swapped the US HID shields for the UK ones as they were originally made for right hand drive cars and would blind on coming drivers if not changed out.

So how is the car with these changes?  It is fast and handles very well.  The exhaust is a bit loud, but not bad.  The ride is excellent and the car is very drivable around town in traffic.  At idle the cams provide a gentle lope that could probably be dispensed with if I turned up the idle.  I have taken the car on a 3000 mile road trip since the latest modifications and had it on a road racing track for two days.  It has excellent manners in both situations and is a blast to take to its limits.

There is always the temptation to “just tweek it a little more”, but I think I’ll pretty much keep it where it is now.  It is a nice balance between a street car and a track car.

Any questions?


How to Save Lots of Gas

June 7, 2008

If you really want to reduce your fuel costs then don’t drive.  Simple, but true, try walking, biking or talking someone else into using their gas.

If you are going to drive your own car and use your own fuel then the most effective thing will be to reduce weight.  Go through your vehicle and see what you can take out.  Weight is the biggest contributing factor to gas mileage.  Guess why Hummers get such crappy mileage?  Get a car that doesn’t weigh much or reduce the weight of what you have.  So clean your car inside and out as well as rinsing dirt off the underside and wheel wells.  If you want to clean the engine compartment wait until it is cool and spray it down with Simple Green and rinse.  Do that a couple of times and you will have a sparkling engine compartment.  You will have gotten rid of dirt and its weight, and you will now be able to notice any leaks or problems much quicker.

Keep your tire pressures where they should be.  Take the factory recommended pressures (usually on a sticker in the door jamb) and boost them up by two or three pounds.  You might end up wearing the middle of the tire’s tread, but you can often cut the rolling resistance down.  Just be aware that it will mean a harsher ride and you need to be cautious about wear and handling changes. 

Use nitrogen in your tires.  Your tire pressures will be much more stable and it will show up in better gas mileage and longer tire wear.  Normal compressed air contains a lot of nitrogen, but it also contains oxygen and water vapor, among other things.  Its not snake oil – nitrogen works.

Get a tune up.  Forget buying miracle magnets or turbo intake twirlers that claim to increase mileage by at least 10%.  Perform the maintenance that should be done like changing spark plugs, wires, coil packs, air filter, gas filter, etc.  Change your oil and rotate your tires (if possible) on a regular basis.

Make sure your car is aligned.  While getting it aligned the technician will be able to tell you if you have ball joints or tie rod ends that are worn or damaged.  Replace them, if necessary.  Those worn items will cost you in fuel and affect the safety of your vehicle.

Drive like fuel costs $20 a gallon.  Pretend you have a raw egg under your foot.  You will piss off the drivers around you, but you will save fuel if you ease on the gas ever so gently and minimize your use of the brake (be safe – use your brakes to keep out of trouble).  Adopt as smooth a driving style as possible.  Sitting at stop lights you are getting zero miles per gallon.  You might want to shut off the car if you know you will be stopped for a while, like at a railroad crossing or waiting in line to fill up.

It costs money to drive a complex vehicle like we have today.  Don’t take it for granted.  Keep it maintained and clean.  Don’t haul around unnecessary weight.  Drive smoothly and carefully.  Don’t drive if you can avoid it and plan your routes ahead of time.

Gas will not get any cheaper and someday it will essentially be gone.  Try the above and save your money for an electric car.


VIR – Playing Hooky part two

June 4, 2008

Shortly after returning home from my track days at VIR a sister of mine called to find out how it had gone.  I related some of my experiences and she then asked if there were any women at the event.  I replied that there were not many and none in my run group.  She asked if I thought it was because it demanded a certain amount of bravery.  I thought it was a very interesting question and I gave it a bit of thought before I answered.

 

No I don’t think it is a matter of bravery or courage, but I understand why that is what people outside of the sport focus on.  I know when I am standing near the front straight and watch the cars scream past me traveling 120 to 140 miles per hour or even faster that the thought that runs through my head is that they must be f*cking crazy or incredibly foolhardy.  But when I am in my car doing the same down that straight, being afraid is very far from my mind and I certainly don’t consider myself particularly brave.

What I do feel is confident.  The kind of confidence that comes from experience and learning what my car is capable of, what I am capable of, and what the track will ask of the both of us.

I had been to VIR four times previous so I was familiar with the corners and the environment.  I had enough experience with HPDE (high performance driving education) to know that what I really needed to concentrate on was learning the best line through each corner, perfecting my execution through those corners so that I was smooth and flowing all the corners together until I had achieved a rhythm that made the most of the track and allowed my car to perform at its peak.

I was not mesmerized with the accomplishment of seeing how fast my car could go down the straights.  It has about 400 horse power to the wheels so I knew that it could propel me down the straights with great alacrity. It is not a challenge to just put my foot down and rocket down a straight.  For me it is the corners and the straights are just the time in between the fun parts.

Corners ask a lot of you and take no pity on the brash or abrupt.  It is a continual balance of three major actions – turning, braking, and accelerating.  Your tires are your only contact with the track surface and while you can do one hundred percent of each of the three actions at any one time, you must split the percentage available to you if you need to use more than one at a time.  You can use 100% braking after rocketing down the straight and getting ready to enter a turn, but you must reduce that 100% demand on braking if you also wish to turn into that corner.  You need to gently bleed off the braking as you turn in to the apex of the corner and roll on to the accelerator to pull yourself around while you share that 100% with your need to turn the car to face the next corner.

In order to achieve the most speed through the course you do your best to perform these transitions as quickly and smoothly as you can.  You also must deal with traffic on the track as well.

The first time you try your hand at an HPDE event you will be struggling to absorb everything that you must learn.  You will struggle to remember every one of the many corners and the unique qualities of each one.  You will focus on the apex of every corner that you are trying to learn and as you do so your vision will narrow and you will not even realize it.  You will drive from point to point and see little else but the tarmac of the track.  If you have a good instructor they will help you recover from your tunnel vision and get you to look out and ahead.  You cannot go fast unless you teach your mind and body to make the most of its senses and vision.  Awareness is such a big part of going fast.

Once you open up your vision and begin to learn your corners and the line through them you will be hit with the variable of traffic.  Yes there will be cars coming up behind you and they will be expecting to get a signal from you allowing them to pass as soon as you reach a passing zone.  There will also be cars ahead of you traveling slower and taking a different path through the corners.  You must not be mesmerized by the traffic in front or you will find that you are following their line through the corners and not your own.  This is not formation flying – you must determine the best line through each corner and stick to it no matter what the other car is doing.  That does not mean that you blindly crash in to the guy ahead of you.  It just means that your job is to execute your line and not the other guy’s.

In my first day’s session I wanted to get familiar with the track again.  I could picture each turn in my mind and had “driven” around the track in my head several times, but there is nothing like doing it from the driver’s seat.  There are always changes in the surface, especially after four years.  I also had to learn the best line around the track.  I was fortunate to have an excellent instructor to help me through this.  I knew that to do this it would mean that I would be having several cars passing me as I concentrated on the corners.  I had to leave my ego in the pits and let them by knowing that my goal was a longer term success. 

thsccmay-01082

With my instructor’s help I was able to improve by leaps and bounds until there were only two corners that I needed to perfect.  That’s not to say that I didn’t have to keep working on all the other corners, I did.  Negotiating a track at speed is a matter of trying to achieve perfection.  You are constantly making “mistakes” – on not being absolutely “perfect”.  You must realize what your mistakes are and how you could do “it” better, but not lose you focus on the next corners coming up. 

The track’s coefficient of friction is constantly changing, your tires are changing, the weight of the car is changing as you use up fuel, the weather is changing, and it goes on and on as the variables add up.  You adapt on the fly as the way you transitioned out of a particular turn doesn’t work quite the same way as it did prior.  You cannot lose your concentration nor get bogged down in a past mistake.

Driving fast successfully is demanding mentally, physically, and emotionally.  You must keep yourself hydrated and as fit as you can.

At the end of the first day of sessions on the track I spent some time on the skid pad.  This is a large area of asphalt that has a white circle painted on it and is sprayed down with water from sprinkler heads.  The idea is that you build up speed going around the white circle until either the tail end of the car come out or you start to plow forward instead of continuing to turn.  While I waited in line for my turn I watched rear wheel drive cars slowly accelerate until their car turned tail happy and the front wheel drive cars start to understeer to the point that they would plow straight.  Each driver would use this event to learn how to recover from the unwanted transition.

Finally it was my turn on the pad.  An instructor got in on the passenger side and asked if I knew what needed to be done.  He had me get on the white circle and accelerate the car.  Around and around I went, building up more and more speed.  The car would lean and just keep going around the circle.  Finally the instructor would have me make harsh inputs into the steering or the accelerator to induce over- and under-steer.  When the car twitched off line I would quickly correct it and return to driving the car around the circle.  We ran in both directions until my time was up and then I drove back toward the entrance and to where the crowd had been standing a watching the spectacle.  Their eyes were wide and some mouths were open and I wasn’t quite sure what the reaction was from.  Later they told me that as I went around the circle faster and faster the inside rear wheel lifted off the ground and just stayed suspended in the air.  I never felt a thing but plenty of traction.

The second day at the track was wonderful weather.  The rain from the previous day was gone and the sun was out.  The track would be getting nice and sticky.  My instructor and I went out for my first session and made sure that I remembered things I had learned the day before.  The next session I again focused on perfecting a couple of troublesome corners and my instructor was very happy with my lines and the smoothness I was able to achieve.  At mid-day there was a parade lap where helmets would not be required because speeds would never exceed 65 mph.  My instructor encouraged me to go out on the parade laps and practice my lines at a lower speed.  It was excellent advice.  With high speeds come additional demands and variables in timing and I really wanted to focus on “the line” so the slower speeds allowed me to do just that.  I noticed as I followed traffic on the parade laps that most of the drivers took a lazy line that was not a racing line.  I ignored their line and stuck to mine perfecting my muscle memory of every turn.

For the third session I went out and did a couple of laps when my instructor asked me to return to the pits.  We pulled up onto the false grid and he said that I was good enough to solo and left me to drive the course on my own.  That was a great feeling of combined freedom and some added responsibility as I was completely responsible for my car now.  Out I went, making sure that I retained the discipline of sticking to the proper line and managing traffic around me.  I was able to do a lot more passing and had developed a satisfying rhythm around the track. When the session ended it was back to the pits and I was feeling ever so satisfied with my self.

That afternoon was the forth and final session and it was one where I could also drive solo.  I had about a third of a tank of fuel left and had the course mapped in my mind and body.  I lined up on the false grid and waited my turn to be waved on to the track.  Off I went toward the first turn and all the others to follow.  My rhythm felt smooth and my overall speed was increasing.  Soon I passed the fastest car in the run group, a new Corvette Z06.  I continued to pass others in the group and while I felt very pleased with my self I knew that I could not let myself be foolish enough to be distracted either.  I stayed focused and continued to progress.  I cleared some additional cars and headed down the front straight to turn one again.  I then hit my line through turns two, three, four, and five accelerating through the short esses.  Then I ran out of gas.  Not quite mortified, I was certainly frustrated.  I also knew that it meant that I had been going considerably faster than at any other time.  A third of a tank would have been sufficient in an earlier session, but when you go fast your mileage drops off dramatically.  Where I would get 17-18 miles to the gallon around town, on the track it was more like 7-9.  At that rate a gallon of gas wouldn’t get me much more than two laps around the track.

I pulled the car off to the inside on to the grass and sat as traffic sped past.  I think I was more concerned that I might have impacted their fun on the track by forcing a yellow flag to be shown in the section of the track that I was stopped on.  In a moment the session was over and a couple of trucks came out and, after they made certain that I was OK, they towed my car through an access point toward the pit area.  With my car at an angle I was able to get enough fuel to the pickup and the pump so that my car would start again.  I crept to the track’s fuel pumps and filled up.  Others in my run group asked if I had serious mechanical troubles and were happy to find out that it was just an empty gas tank.  The driver of the Z06 came over and paid me a fantastic complement when he told me that he felt I had a very fast car, that I was a very fast driver, and that it was a pleasure to share the track with me.  Wow – I didn’t know what to say but I did thank him.

It was great to be able to play hooky and be hosted by the Tar Heel Sports Car Club at what is probably one of the best road racing courses in the nation.  It allowed me to confirm that all the modifications I had performed on my Evolution had actually improved the car’s capabilities; that, in four years, I had not lost my capabilities; and that VIR was everything I had remembered it being – and more.