Tags : :
Based on the JB-DET engine so will suit Copen or 4cyl Mira TRXX thingy.
713cc engine twin cam, sequential injection, BB large turbo, VVT, motorsport
forged pistons, conrods and crank, revs to 9000rpm, bigger injectors and so on.
118bhp output at 15psi, told it can run at 24psi with no internal modifications which is about
I have had two X4's now, first one totally standard ran at 20psi for several years
without a hitch - 50mpg and 0-60 in 6.6 seconds also holds lap records at Curborough.
Offered a works X4 from Daihatsu Japan, snapped it up and it came with a full race package,
spare engines etc.
Am selling some of the spare bits off such as this complete new engine.
Also have the following:
Works inlet manifold
Works throttle body
Works exhaust manifold and downpipe
Works 165bhp cylinder head. (titaninum sodium valves)
Works pistons and conrods and bearings (ceraamic coated no less!)
New turbo in box
Selling off bits to fund new Daihatsu race car.
In my opinion this is the most cost effective way to increase the performance of your Copen or Mira
without affecting drivability or reliability. No loud exhausts or naff air filters.
I have the original engine output charts from Daihatsu of this X4 engines to prove figures and
original invoices etc !
If interested in any of the above please send an email to me at: