Targa Miata
MIATA BUILD
March 25, 2009 - A great weekend at Laguna Seca.
I drove out to California expecting a two-day track event, and ended up with quite a bit more than that.
Of course, there was a big track event. The Targa car spent around 7 hours on the track. I was playing with the fast guys in the A group. The open passing and chance to play tag with some of my friends in close company made the track far more interesting. Partway through the first day, circulating alone, I was sick of the same 11 corners over and over. But once I got into a chase with a few others, it added a whole new dimension. I can see how wheel-to-wheel racing could be addictive, although it's a different sort of game from the open road. I did notice that my peak speed on the track was only about 160 km/h.
During the Targa, our top speed on the Leading Tickles stage was 190 km/h. With trees and rock walls lining a bumpy road that we'd never seen before.
In the rain.

The car was handling perfectly. I'd nailed the balance with the new springs and sway settings, and I didn't touch the setup all weekend. When my good friend - and ex-pro driver - Rick Weldon took the wheel, he came in laughing and completely in love with the car. He didn't want me to change a single thing. It's good to get his stamp of approval, as it's always a bit worrisome to think that maybe I've adapted to the car instead of getting the car right. He really felt the car was prepared well and the handling was bang-on. Another fast driver commented on how it was impossible to get the car upset. No matter what I did, the car just ate it up and came back for more. Naturally, this seemed to be in context of my habit of making full use of the berms. "The track is wider for that car", one other driver noted. The hearty engine came in handy as well, even holding off at least one turbo Miata down the long front straight. Rick went out with Tom Matano in the passenger's seat of my car and got into a big scrap with one of his Spec buddies, everyone coming in with big grins.
Janel was also there, getting friendly with the driver's seat on the car. It was the first time she's really had the car up to temp and she was much happier than she had been at our little kart track day a few weeks back. As soon as she discovered how well the brakes worked, she started using them in earnest - she's always had the habit of coasting up to corners, so that's a big step. And more importantly, she discovered that all that information coming from the car is useful. As she described it to someone else - her Miata will do the same thing whether she takes a corner well or takes it badly, but not tell her. But the Targa car will let her know if she takes a corner well, giving her the feedback to improve. She can feel the tires working. She figured out turn 10 almost immediately, and I worked with her over the weekend to take what she was doing on that corner and apply it to others on the track. We worked our way around piece by piece - 6, then 4, then 5. It turns out she likes fast corners best. The Corkscrew wasn't her favorite as she had to muster the nerve to go over that blind drop. On her last session, she went out with Rick and he managed to coach her best driving ever out of her, including figuring out the Corkscrew. She was overjoyed and Rick was bubbling over with praise about how well she takes instruction. She's got a good feel for the car, and after this weekend I think she likes the driver's seat almost as much as the navigator's! She was nervous that Rick would be disappointed, but it was the exact opposite. Was I proud? Oh yes.
The only downer to the weekend was that, in a remarkable and extended spasm of incompetency on the part of US Air, she arrived 24 hours late and our planned mini-vacation in Monterey didn't happen. We'll be avoiding that airline in the future.
There were lots of fans of the Targa car there. I don't think Janel ever believed me about how many people know about the car and followed our race, but she got a chance to see the enthusiasm first-hand. Thanks to everyone who came up to introduce themselves! I was also surprised at the banquet on Saturday night when I was honored with an award for my contributions to the Miata community. Wow!
The car saw about 7 hours of track time. It was almost perfect, with only a couple of hitches. The first happened when Rick was driving the car, the check engine light came on and the car lost power. That's the Hydra Nemesis dropping back to the safe spark map to protect the engine. I haven't been able to figure out just what happened there, although the fuel level was getting low. I tossed in a bit of gas and some toluene (causing some real confusion in the pits, seeing as how I was pouring it out of a paint shop can) but the problem happened again. A full tank of 91 "competition" fuel and it cleared up. Weird. I'm going to change the fuel filter, as I don't know what's gone through that tank with all the small Newfoundland stations. Then, in the last couple of sessions, the high-rpm stumble from the last day of the Targa came back. Again with the puzzling problems! I'm going to brainstorm this one with my coworkers for a while and see what they say.
I also got the chance to drive Elvis, the LS1-powered Miata I autocrossed a few months back, on the track. Yee hah. The thunderous rampage down the straights was to be expected, but on top of that the rest of the car worked very well. It put down power far better than it had any right to do, and the overall balance was still very good. As it should be, because Elvis was running the AFCO suspension developed on the Targa Miata! When another car pointed us by, we didn't just pass them. We evaporated them. It would be an awesome Targa weapon, with huge acceleration, a wide powerband and the ability to dance in the twisty bits. Unfortunately, it got coolant into the cylinders and the car got parked. The current theory is that the modified heads were ported too far and got into a coolant passage. Whops.
Now, Elvis had been driven to California while I towed the Targa car out. So, other than a quick stop to change to street rubber in Reno (after going over a 7500' snowy pass on race rubber alone at 11 pm!), I drove the race car home without changing a thing. 7 hours on the track, 17 hours on the interstate. I've always said that a good Targa car was a good street car, but I never thought I'd have to prove it in this way. I averaged 30 mpg and 70 mph on the run from Sacramento to Reno, which is nothing to be be ashamed of. How's that for a dual-purpose machine?
tags: laguna, ergonomics