Project FD RX7 Restomod: Part 11 – Engine Disassembly
We decided to tear down a 2,000-mile brand-new Mazda crate engine to turn it into one of the most highly-modified 13B REW engines on the planet. We started by removing…
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Project GD STI, Adding an Intercooler Sprayer to a Front Mount Intercooler
Subaru STIs have a water intercooler sprayer as factory equipment. There is an intercooler spray button on the dash with a large water reservoir in the truck with a pump. …
Project FD RX7 Restomod: Part 10 – Engine Fire Update
Owning an RX-7 is like riding a motorcycle. It’s not a matter of “IF” (the car catches fire) but rather “WHEN, and how bad?”. A small engine fire changed the…
Project GD STI We Don’t Need a Damn Rotated Mount Turbo
So with our last go around of Project GD STI we had reached our goal of 500 wheel hp but we were not entirely pleased with our powerband. Our power…
Project GD STI, Installing an Upgraded Precision Ball Bearing Drop In Turbo and Larger Injector Dynamics Injectors
In our previous article, we had gotten a new Precision Turbo ball bearing center section drop in factory replacement turbo to replace our previous turbo that was choking our engine…
Testing the CSF BMW S58 G8X Intake Manifold
The BMW S58 engine is pretty impressive, directly based on BMW’s sturdy diesel engines, it is capable of producing over 1000 hp with just bolt-on mods. One of the bolt-on…
E85 Can Mess Up Your Engine!
Although E85 is an awesome fuel, high octane, cheap, cool burning, it can cause a lot of harm under certain operating conditions. This is an EJ257 that failed in my…
Hypertech REACT Revisited
It is not often that I feel compelled to revisit a product in a positive way but I am so in love with Hypertech’s REACT drive-by-wire throttle controller that I…
Project E39 M5, Improving Cooling With CSF
Even though our E39 M5 has been well maintained and is in excellent shape, it is still a 20-year-old car and some components were starting to show their age. In…
Hypertech REACT Eliminates the Annoying Toyota Tundra Overly Sensitive Throttle
One of the things that really annoyed us about Project Tundra was the exaggerated throttle swell programmed into the drive-by-wire throttle. Toyota seemingly did this to make Tundra owners think…
Project E39 M5, Installing the Dinan Cold Air Intake
The BMW E39 M5 is one of the funnest most rewarding cars to drive. It is also a car without much aftermarket parts support. Previously we had gotten more power…
Project GD STI, Improving the Powerband with Precision Turbo and Injector Dynamics
Previously we had dyno tested and tuned Project STI at Church Automotive testing. Although our car made a pretty impressive 501 whp and 487 lb/ft of torque our power peaked…
Modernizing the 300ZX and the VG30DETT, Fixing Spark Scatter with EPR Engineered Performance
One of the VG30DE and DETT’s weak points is the belt drive of its valvetrain. Belts were the main way to drive camshafts in the 80’s when the engine was…
ASF Machines Subaru Engine Assembly Tools
If you work on Subaru engines, ASF Machine is producing some cool tools to make your day easier and to help you do a better job! The first tool is…
The Mystery of the Round Subaru Radiator Cap
Having an incorrect radiator cap on a turbo EJ Subaru is a critical mistake that even seasoned Subaru builders, including us have made. In fact, one of our sharp-eyed readers…
Introducing Garrett Motions New GVW Series Wastegates
Garrett Advancing Motion has just released their new line of external wastegates for controlling turbo boost! The wastegates are available in three sizes, the GVW40 with a 40mm valve, the…
Project GD STI, Dyno Tuning for Big Power with Reliability
Well, it’s finally time to get Project STI started and tuned. As with many of our projects, we enlisted the help of Shawn Church of Church Automotive Testing to get…
Rodger Clark Motorsports Subaru EJ Low Temperature Opening Thermostat
We had noticed that the coolant temperature of Project STI was pretty hot considering that the car had a big CSF radiator and a Greddy oil cooler, in fact, the…
Modernizing the Nissan VG30DETT, Polar Engineering’s Ignition Upgrade
The VG30DETT found in the 300ZX Turbo had a state-of-the-art ignition system back in the early 90’s. It had one of the first direct-fire, coil-on-plug ignition systems on a production…
Nissan VG30 Adjustable Timing Gears by BDE
Until now there have never been any adjustable timing gears for the VG30DETT and VG30DE as found in the 300ZX and the 300ZXTT. Brett Dempsey Engineering or BDE has come…
Project GD STI, Fixing all the Details!
There are a lot of small details involved with swapping an engine, especially when upgrading all of the system parts for higher performance. These make the difference in the reliability…
Modernizing the VG30DETT, Fixing the Oil System
The VG30DETT is known to fail the rod bearings. Since the oil pump seems to have decent capacity and the rod bearings have a sufficient surface area, we believe a…
Project Nissan Skyline R33 GT-R – Part 6: Clutch, Diverter valves, catch cans, and Dyno testing. Going from bad..to great..to terrible.
It’s been several months since we’ve updated you on our Project Nissan Skyline R33 GT-R. We battled some gremlins and figured things out along the way, and are finally moving…
Squirrel Power: Making a Minibear Part 2
Our 1982 Suzuki FA50 is a pretty fun little machine. It turns heads and is a great little around-town runabout, perfect for parts store runs and other short errands. However,…
Modernizing the VG30DETT, Strengthening the Block With Engineered Performance
There has been a resurgence of interest in 90’s Japanese cars as of late and with that a surge in new parts development with specific popular models. In our case,…
What is Shot Peening and Why is it Useful?
If you are a long-time MotoIQ reader you probably know we often prescribe shot peening for heavily stressed metal parts. You have probably read about us prescribing the shot peening…
IAG’s New Easy Plug and Play Drive By Wire Big Throttle Body for the EJ257.
We previously had gotten an IAG Performance big throttle body for Project STI, although it was a nice piece it was not exactly user-friendly. You had to get the drive-by-wire…
Project GD STI, Out with the Old and in with the New!
It is time for us to swap out our damaged EJ257 and install our IAG 700 engine. We spent a lot of time waiting on parts to finish the job,…
Dyno Testing the Holley Skyram Intake Manifold
We first wrote about Holley’s Sky Ram intake manifold as an April fools joke. Although many people thought this was photoshop, Holley actually made a working Sky Ram manifold using…
Street Friendly (And California Legal) GD Subaru STI Build! Part Three, Getting Some Green Power With Cobb Tuning
Although our home state, California has great food and possibly the best weather in the county, the regulations that govern just about everything here have made about anything you want…
Big Power with a MSD Atomic Intake Manifold and Tuning for Project C7 Corvette!
In our last episode of Project C7 Corvette, we installed some Hooker Blackheart long tube header for the direct-injected LT1 engine. For this episode, we are going to add an…
Nightmotorsport Air Oil Separating Billet Valve Covers for Subaru EJ Engines
Subarus like all flat engines, blow a lot of oil out of the crankcase in their blowby gasses. This is always a problem with performance flat engines like Porsche or…