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After the 2008 year results we decided to revise the engines specs and designs of the TOMEI GENESIS COMPLETE ENGINE EJ25G.
With the aim of competing at the world time attack event, we decided to give a bit more power.
Not for just a one lap special purpose but for more, as it will be following our main purpose of marketing.

So at this point we decided to change the camshafts to match the slightly larger turbos A/R size.
As for the other basic specs on the engine, it is pretty much nearly the same as the 2008 specifications. Just some adjustments to suit higher engine speeds and the larger turbo.
 
TOMEI GENESIS PROTOTYPE TA SPEC
BASE EJ25
BORE x STROKE 99.75 x 79.0mm
DISPLACEMENT 2469cc
CYLINDER HEAD GRB
COMPRESSION RATION 8.5
BOOST SETTING 1.6kg/cu
PISTONS TOMEI PROTOTYPE 99.75
CONNECTING RODS TOMEI FORGED H-BEAM (CENTERLINE 130.5mm)
CRANKSHAFT TOMEI COMPETITION MODEL
79.0mm STROKE
CAMSHAFTS TOMEI PROCAM SPL EX2569.8mm
IN 260-9.8 EX 264-10.0
ADJUSTABLE PULLEYS TOMEI PROTOTYPE
HEAD GASKET TOMEI PROTOTYPE 101.2? 0.7mm
VALVES TOMEI BIG VALVE
VALVE SPRINGS TOMEI OVAL SHAPED
RETAINERS TOMEI Ti
VALVE GUIDES TOMEI BERYLLIUM
SEAT RINGS TOMEI BERYLLIUM
HEAD BOLTS TOMEI
CONROD BOLTS TOMEI H-BEAM CONNECTING RODS
TIMING BELT TOMEI
TIMING BELT GUIDE TOMEI
OIL PAN BAFFLE TOMEI BAFFLE STIFFENER
EXHAUST MANIFOLD TOMEI EXPREME 4-2-1 EQUAL LENGTH FOR SINGLE SCROLL TURBINE
TURBINE Garrett GT3076R
FRONT PIPE TOMEI CUSTOM MADE
INJECTORS TOMEI 1000cc
FUEL PUMP BOSCH
FUEL P. REGULATOR TOMEI L TYPE
OIL FILTER STD
WATER PUMP STD
OIL PUMP STD
THROTTLE 3mm UP
 
 
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