Grassroots Motorsports | Sports Car Magazine

Colin Wood
February 28, 2020

Ultimate Track Car Challenge | #FastFriday | Hyperfest

#FastFriday: How Competitive Will a Stock Camaro ZL1 1LE Be?

This week we’re announcing the third round of entries accepted to compete in our Tire Rack Ultimate Track Car Challenge, the annual no-holds-barred track battle that simply seeks the fastest ...

Chris Tropea
February 28, 2020

Building Our $500 Lemons Car: Part 1

Check out the first video update for our 24 Hours of Lemons Fox race car, and let us know what you think. If you like it, we'll make more. If you don't ...

David S. Wallens
February 28, 2020

Fuel Tips

Fuel Tips: Fueling Your Boosted Engine

Time to fill up your force-fed car? Time to discuss some E85 science with Zachary Santner, technical specialist with Sunoco Race Fuels.

J.G. Pasterjak
February 28, 2020

Chevrolet

Project Z06: Continuing Fabrication on Our Dry Sump System

In a previous update, we laid out the basic function of our dry sump system for our C5 Corvette Z06 track car, and now it’s time to start physically laying ...

David S. Wallens
February 28, 2020

suspension

Is a More Expensive Suspension Setup Better Than a More Inexpensive One?

Conventional wisdom says that a race-tuned, coil-over suspension setup turns faster lap times than a simple spring and shock upgrade, but what does the data say?

David S. Wallens
February 28, 2020

Honda

Project Civic Si: Did You See Our Civic at Daytona?

Did you get a chance to see our 2019 Civic Si in person at the Grassroots Motorsports Experience at the Rolex 24 At Daytona?

Tom Suddard
February 27, 2020

Mazda

Project Endurance Miata: Fitting Our LFX V6

After years of developing our turbocharged endurance Miata, it was time to kick it up a notch with a LFX V6.

Colin Wood
February 27, 2020

Live

Analyzing Your Laps With Racers360

Dion von Moltke from Racers360 will be joining us for GRM Live on March 4, and we're taking your video submissions to analyze on the air!

J.G. Pasterjak
February 27, 2020

Volkswagen | Volkswagen GTI | Volkswagen GTD | Volkswagen GTE

Yes, the New GTI Will Still Have a Manual Transmission

Volkswagen has unveiled the eighth generation of their iconic hot hatch, the GTI, at the Geneva Motor Show with more power, more features and more… styling than any previous version.

Staff Writer
February 27, 2020

Dye Penetrant Testing | DIY

Testing for Cracks at Home With DIY Dye Penetrants

There is an inexpensive, at-home way to perform a DIY crack and flaw inspection on many of your car’s components. The method is called visible dye penetrant testing.