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GRM+ | Mitsubishi , Endurance Racing , 25 Hours of Thunderhill
That time we attempted to stay alive at the 25 Hours Of Thunderhill

In 2007, our own J.G. Pasterjak took on the 25 Hours Of Thunderhill in a Mitsubishi Lancer to see if he could finish one of the world's longest endurance races.

Honda | gridlife | Honda S2000 | Engine swap | Gridlife Touring Cup
Back-to-back adversities can't slow this V6-powered Honda S2000

Swapping a Honda engine into a Honda 2000 is nothing new–but this one bypasses the ever-popular K-series for an Odyssey-spec V6.

Tara Hurlin
GRM+ | BMW | BMW 2002
Tired of slaying dragons, this racer switched to a BMW | #TBT

Underneath this BMW 2002's vintage-­style fiberglass lies a mixture of period-correct performance parts and custom-fabricated hardware.

Marjorie Suddard
aerodymanics
5 things amateur racers get wrong about aerodynamics

Aero expert Steve Stafford sets things straight with aerodynamic basics.

Steve Stafford
Shop Work | CAD | Technical Drawing
Technical drawings: The first step in making precision parts at home

Perform professional-level machining at home? You can do this. First step: drawing some plans.

Tom Suddard
GRM+ | Volkswagen | Volkswagen Golf GTI | Volkswagen Polo GTI
Volkswagen Polo GTI: Is it more GTI than the Golf GTI?

You can't get the Volkswagen Polo GTI here in the U.S., but much of the rest of the world has it. What's it like to drive the smaller cousin of …

J.G. Pasterjak
splitter | Shop Work | Aerodynamics | Against The Wind
How to build an effective splitter for only $100

After running our 350Z through the digital wind tunnel, we could attach the actual bits that would make it faster in real life.

Tom Suddard
Miata | MX-5 | wheels | suspension
Optimizing the ND-Chassis Mazda MX-5 for the street and the track

Can one car make a great daily while also serving as a competitive autocrosser and a fun track car? If the answer is Miata, then likely yes.

Andy Hollis
brakes | Tech Tips | Braking | Brake Fade
Brake fade: What you need to know and how to fix it

We ask our brakes to do a lot, but what happens when we demand too much?

J.G. Pasterjak
GRM+ | Data Acquisition
Turn a smartphone into a data acquisition system | The apps you need

Sometimes, the best data acquisition system is the one you always have with you–yes, we're talking about your smartphone.

J.G. Pasterjak
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