New Internal Engine Goodness for your Subaru

Tomei has recently released several new components for the Subaru EJ255/57 engines.

First up, their unique barrel forged piston set. The ellipse barrel shape profile was chosen from the advanced analysis of the analysis distribution of piston temperatures, material properties and the coefficient thermal expansion rates. This allowed our design to use much tighter piston clearances for maximum power range. This greatly reduces blow by gases, friction loss and no noise. This maximizes power and longevity of the piston. Specs: Bore diameter: 99.75mm, 19.5cc dome volume, 380 grams (503 grams with pin)

In concert with this new piston release comes their new EJ26 stroker kit. Tomei has made an option to include their Competition Bearing Series product with our kits. All the engine internals are brought to static temperature (20 degrees Celcius) and blueprinted with 0.040~0.060mm clearance bearings
KIT CONTENTS
FORGED FULL COUNTER CRANKSHAFT
FORGED H-BEAM CONROD
FORGED PISTON KIT

To compliment the above components, Tomei also has released their newest headgasket design for the EJ 2.5 liter engines. They are all 101mm bores, and offer 4 possible thicknesses: .7, 1mm, 1.2mm and 1.5mm. These are all grommet/stopper types, which are a superior overall design to the OEM bead style. Priced at $114 per pair + shipping.

Contact us for availability at z1sales@z1auto.com for any of these items.

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Stroker Kit Sale!! (Subaru, Mitsubishi)

What would be better under the tree or the Channukah bush this year than a shiny new stroker kit for your beloved car?

We’ve got the Tomioka Strokers ready to go and on sale for a limited time.

For the Subaru: This kit for the EJ20 takes you 2.2 liters. Full kit includes forged crank, forged 92.5mm pistons (2618 aluminum, 8.5:1 compression, coated skirts, including pins and Total Seal rings), forged H beam rods (4340, shotpeened, with ARP hardware), 2.2 liter forged crank (79mm, nitride treated). On sale now for $1875 SHIPPED in the 48 states! It even includes the main and rod bearings!

For the Mitsubishi: This kit by Tomioka takes your Evo 4-9 4G63 and strokes it to 2.3 liters.

Full kit includes forged crank, forged 85mm pistons (2618 aluminum, 8.5:1 compression, coated skirts, including pins and Total Seal rings), forged H beam rods (4340, shotpeened, with ARP hardware), 2.3 liter forged crank (94mm, nitride treated). It even includes the main and rod bearings! Priced to move at $3199 SHIPPED in the 48 states!

Contact us at z1sales@z1auto.com to order, stock is very limited.

Evo X Stroker Kits

If you’re looking to step up your game with BIG power for your 4B11T, then you gotta stroke it! We’ve put together these stroker kits using proven, quality parts, taking all the guesswork out of it.

All bring you to 2.5 liters of total displacement. Components include a forged crank (4340 chromoly with 98mm stroke), your choice of rods (H or I beam configuration, and CP forged pistons with your own bore/compression choice. Coating for the pistons can be done at an additional cost. Bearings sold separately.

Prices range from $3090 to $3575 depending on spec and configuration

to order