11.5:1 NewTech 2ZZ-GE Race Ready Short Block
You won’t find a better rotating group for the 2ZZ-GE based Lotus. We’ved packed more features, care, and technology into these short blocks than any you’ll find.
Uniquely, we brought aircraft grade Nikasil to the 2ZZ-GE. It’s the most widely used bore technology in automotive racing and aviation. This process has been around for decades but is the newest bore technology to finally be brought to the Toyota 2ZZ-GE, so we call it the NewTech 2ZZ-GE.
This is a fully assembled and blue printed 11.5:1 NewTech 2ZZ-GE short block.
An acceptable core is required or an additional core charge will be applied.
Features and Assembly
Custom CAD designed Arias Race Pistons w/ Ceramic Tops and Teflon/Moly Skirt Coatings
ARP Main Studs and Nuts
ARP 2000 Series Rod Bolts
ACL “H Series” Race Rod bearings, customized by BOE
ACL “H Series” Main Bearings
Aircraft Grade Nikasil Bore Plating
Precision Gapped Piston Rings
Sonic Cleaned Block and Oil Galley Cleaning
11.5:1 is the stock Lotus Compression Ratio. This 11.5:1 short block is ideal for NA and supercharged engines that are running any Lotus or Lotus Sport tune, Kold-Fire, Sector111, Charlie X flash tunes, and of course custom tuning.
There are two key problem areas. The first is at the heart of the engine: the cylinders. Toyota’s MMC cylinder plating process is simply not suited for high performance use. The MMC liner plating dissipates heat well, but is fairly soft, easily damaged and impossible to repair. It is also incompatible with commonly available performance pistons such as Wiseco, JE, CP, Arias, Ross, etc. This lack of piston availability has led many high-performance users to run with the stock hypereutectic aluminum pistons or replace the liner with steel sleeves.
The second key problem is the stock piston. They have a high concentration of silicon, which makes them brittle and prone to cracking under the stress of high-performance use and/or forced induction… hence, the “Glass Engine” reputation. Read more about our pistons below…
Our solution was to bring the well-known, tried and true, Nikasil cylinder plating to the 2ZZ-GE. We’re the first and only company in the world to bring this high-end, race proven, plating to the 2ZZ.
Nikasil in the 2ZZ-GE:
• Is Compatible with nearly all performance pistons
• Is porous, which allows oil to remain suspended in the cylinder for better ring lubrication
• Retains superior heat dissipation similar to stock MMC
• Is harder and more robust than BOTH iron Darton sleeves and the original MMC plating
• Has a lower coefficient of friction than BOTH iron and MMC - meaning more horsepower and more time between rebuilds
• Cannot shift in the block like sleeves can (and often do)
• Does not weaken the block like iron sleeves do
• It can be repaired, unlike MMC. Gone, are the days of buying new blocks from Toyota!
Why the fuss about bearings?
We use ACL RACE series bearings. They are VERY expensive and hard to get. They’re denoted with an “H” in the part number. You might find other engine makers using ACL bearings, but are they “H” series race bearings? Not likely. Race bearings cost more than double than a standard engine bearing. They are the heart of the motor and are the most critical component of a good rotating group.
Below is a breakdown of an ACL RACE Bearing
Arias Race Pistons
Mahle and Wiseco pistons are OK, but they’re not our custom Arias pistons. Why? Our Arias pistons were custom designed with CAD by one of the world’s best piston makers to suit the demands of racing a 2ZZ-GE in endurance racing. This process took a lot of time and was expensive. The result was a piston that has more features than many others.
HD Piston Pins
Extra Pin Oiling
CAD Optimized Combustion Domes
Enlarged Valve Reliefs
Thickened Upper Ring Land
Expansion Relief Land
ARP certainly doesn’t need an introduction to the world of racing and making reliable horsepower. We use 2000 series rod bolts and ARP main studs and nuts in our assembly.
Assembly and Success
Finally, we assemble the engines in-house. Each engine is assembled with the utmost care. Our tools are always up to recent calibration and our engine assembly room remains clean and separate from the day-to-day workings of the rest of the shop.
Our engines are in Lotus cars all over the world. They have been part of 24 hour endurance racing, and we’re proud to have them in multiple SCCA and NASA championship cars.