Tom’s Miata: Frankenstein Fun

Tom’s story began with his Mini Cooper in the fall of 2018. Then in high school, he cobbled together parts from forums and Craigslist Marketplace postings and ended up pushing a little 230 horsepower and 270 lb-ft from the 1.6-liter. It carried him through his track day foray, but the more he drove it, the more it faltered. He couldn’t keep up with the costs, the fuel, and the track day entries.

His friends suggested a simpler car to try and earn his driving spurs with. By parting out the Mini, he could put together the few thousand he needed to pick up an NC Miata with nearly 200,000 miles on the clock. The NC had lived an unloved orphan’s life; moving through seven households before ending up in Tom’s driveway. Somehow, it was still stock when he bought it. This basic package promised regular attendance at local lapping events, even with his college schedule limiting his time and his finances.

Tom didn’t have the means or the interest in going ga-ga with the mod list. The basic package of Feal 441+ Road Race coilovers, RX-8 sway bars, and Cobra Suzuka buckets did him just fine as he was making his way from novice to intermediate. The objective was to get good enough to feel comfortable at the limit and fix what broke.

Fortunately, little did. The only issue in that busy twelve months was the OEM radiator bursting. In the first year of racing, Tom and a few trusted friends logged over thirty DEs on the dependable little Miata. It actually helped him earn a few bucks, too, after reading Engine Management: Advanced Tuning by Greg Banish, he picked up enough to start tuning the factory ECU and starting a side hustle. That money went to his track fees, and it seemed like he’d found a self-sustaining system for himself. All was well with the world until it wasn’t.

After the engine blew, he borrowed his friend’s daily to finish out the final three weeks of his final semester at school, then bought the remainder of a friend’s parted-out NC track car, which fortunately still had its motor. It wasn’t an ordinary two-liter. His friend had swapped in a 2.5 from a Ford Fusion, a budget upgrade with minor architectural differences to the 2.0 it replaced. Swapping it into his car took less than three days.

Unfortunately, the stock 2.5 fell flat on its face at 5,500. With a set of OEM Mazdaspeed 3 valve springs and a set of Xero Limit “Boost” camshafts, Tom was able to raise the 2.5’s rev limit without any thinning of the functional powerband. The 170 lb-ft on tap starts around 3,000 and carries through 5,000, and the power keeps building to the 7,100-rpm redline, where it makes 197 at the wheels.

A comparison of the 2.5 on E70 (red) versus the 2.0 on 91 (blue).

“The objective has been to see how fast I can go without cutting corners or spending much money,” he elaborated. This is Tom’s main reason to try and use as many OEM components as possible. To avoid dealing with the factory rear hubs shearing, he upgraded to a set of hubs from its stouter older brother, the RX-8.

Though it required a bit of custom work to make it fit, the in-the-family RX-8 differential helped tremendously. Better, more progressive breakaway and improved acceleration from a 4.1 final drive originally suited to a torque-free rotary. After this upgrade, the car no longer lost speed going uphill between Turns 8 and 9 at Thunderhill East.

Because the RX-8 differential is taller, in order to sit in the same spot, Tom had to move the alignment area for the studs to sit in the same spot, which meant losing the alignment dowels. Without these, the powerplant frame eventually started sagging after a few months of hard driving. Eventually, this led to the powerplant frame contacting the midpipe under heavy braking and curb hopping. His attempt at notching the powerplant frame was one piece of trial-and-error that didn’t go his way, but he plans to put a set of custom locator plates to avoid this problem permanently.

Currently, he’s fighting the smaller issues like the one above which make the car hard to drive as regularly as he’d like. “Mostly just little gremlins from the engine swap,” he added. Other than that, it's the wallow from the original bushings which make the Miata a bit unpredictable at times. That’ll be relatively straightforward though time consuming.

If his first year out of school is as lucrative as he hopes, he might assemble a new motor to make the MX-5 a real S2000 rival with the following parts: a Fusion’s 2.5-liter Duratec block and pistons, and a Mustang’s 2.3-liter Ecoboost connecting rods and crankshaft, 12:1 compression and an 8,200 rpm redline, he’s hoping for 270 horsepower at the wheels. “It’s going to take a lot of development on my end, but I’ve got a small group guiding me. I’m in good hands.”

Along with the added speed comes a need for better deceleration, so in addition to a set of four-piston Wilwood calipers and RX-8 Sport rotors (which are only $30 per corner), he’s gone and picked another part within the Mazda lineup that takes a little innovation and forum-digging to swap. The RX-8’s ABS system is less prone to engage ice mode. Though this will be another trek down an unpaved path, he’s been given the schematics from others and feels confident the swap will be successful.

“It’s been fun to Frankenstein because I like doing things that not many have done, but I’m more interested in retaining a lot of OEM equipment since I don’t think it will have many issues in the long run. Hopefully, these parts will make it easier to go out and drive more miles. I still need seat time more than anything. Seat time, saving money, and keeping it reasonably streetable have been my objectives. I think I’ve achieved most of them."

Now, I’m considering making it more of a race car since I’ve got a daily now. But until I can afford a truck, there’s no point in making it a total pain to drive. The added torque is definitely enjoyable in the canyons, where I can keep it in third most of the time.”

How many Miata owners can say that?

Alex’s FL5 Type R: Best of Both Worlds

For Alex Peysakhovich, living in NYC had its perks, but easy access to track days was not one of them. When he relocated to Los Altos and found himself with a backyard and a garage, he decided it might be time to purchase that car he’d always wanted and take advantage of California’s temperate weather and multiple tracks within a few hours’ driving distance.

His heart was always with Honda, but the then-current FK8 Type R was too boy-racer for his liking. “I really loved the car, but thought about some things you have to do with your only car, like go to a business meeting or drive in a funeral procession, and I couldn’t really imagine doing those in an FK8.”

So instead he began tracking with an ND Miata. Heavy modification made it a capable cornering machine, but its impracticality became a constant pain; it needed a trailer for long drives and couldn’t be used to take his dog and his girlfriend on weekend trips. He thought about getting an electric daily that he wouldn't track or modify, but that idea didn't last long. “What’s the point of buying a car you’re never going to take to the race track?” he asked himself.

Enter the FL5 Civic Type R, which debuted after a couple years of tracking the Mazda. The new Civic traded its predecessor’s divisive looks for more subdued styling, so Alex had to check it out for himself.

“I used to think Type Rs were a little overhyped, but after seeing it in person, I recognized why the car has a cult following,” he said.

He appreciated the way Honda’s engineers made this fifty-grand Civic feel unmistakably upmarket. But more than presence or build quality, it had real-world usability going for it. On longer trips, the comfortable seats were a welcome upgrade from his Miata’s race buckets. The interior space, the fit and finish, and the performance made the FL5 a great candidate for a daily driver-come-sleeper, and once the premiums started to shrink, Alex pulled the trigger and brought one home.

Before his first track outing, he made a few adjustments. He’d learned enough to know that a ~3,200 pound front-driver would wreck its Pilot Sports fairly fast, so he ditched those for a set of 265-section Bridgestone Potenza RE-71RS tires wrapped around Apex VS5-RS wheels. Along with a set of eccentric lower ball joints to increase negative camber at the front axle, he replaced the stock pads with a set of Ferodo DS3.12s to help clamp the factory two-piece rotors.

He broke it in over 600 miles then took it to Thunderhill West for its shakedown, where he was pleasantly surprised. The steering was quick, despite a dead spot at twelve o’clock, and the gearbox was, well, Honda. If the interfaces were lacking in any way, it was the position of the throttle — as he put it, “in another zip code.” Thankfully, the auto-blip function facilitated heel-toe shifts despite the awkward pedal placement.

Being a front-drive car, he had expectations for how it might handle on a damp morning. Those were dashed on his first fast lap after mounting the dorito at Turn 3, when it hung the rear out in a big way.

“As far as a car that can pack a weekend of camping gear and do great times around Laguna, it’s a hard car to beat.”

The FL5’s mechanical LSD and brake-based stability control system do a commendable job getting the middleweight to rotate. What was less than impressive were the thermal problems which have been associated with the turbocharged Type Rs. Though not catastrophic, the heat causes the motor to pull timing by the end of a long session, but never puts it into limp mode. “I think there’s only so much you can expect from a turbocharged two-liter making over 300 horsepower,” Alex added.

Fortunately, these issues are not new to the Type R lineup and the FL5 was designed to make them easier to address than its predecessor ever allowed. The ducting routes have been established from the factory, along with a functional hood vent. Honda laid the groundwork, but more needs to be done for hot summer days. “It isn’t imperative, but it could use a bigger radiator and an oil cooler. I’ve got those sitting in my garage in anticipation for the summer.”

“The designers cared about the experience of the car; they wanted it to feel special, even when parked.” Alex added. Credit: Tokumeigakarinoaoshima CCA-SA 4.0.

Beyond that, any remaining mods are far from necessary. The FL5 is well-balanced out of the box and does not need much more power. “The engine is certainly strong. If it could use something to make it feel a little sportier, it would be an exhaust — it’s too quiet.”

That subdued exhaust note is part of what makes the car so versatile, and its wide repertoire comes at a premium. Besides requiring pricier fuel, the turbocharged front-driver is hard on its front brakes and tires, and it goes through consumables far faster than a lighter, better balanced car like a Miata.

There’s no denying the running costs are too high to track a Type R regularly — multiple track days per month will continue to be the Miata’s job — but the Civic will be doing daily driving, mountains, longer trips, and rear its head at Laguna and Thunderhill East a few times a year.

Four years ago, Alex thought fifty thousand for a Civic was steep, but he’s changed his tune as of late. “I know that sort of money for a Civic sounds crazy, but you really need to try it. It’s tough to think of something similarly priced that handles so many different tasks as well as the Type R. If I could only have one car, this would be it.”