As we approach easter, we can finally say that the winter build is complete. We have spent many months putting together an engine package that we hope give us good power & torque whilst still maintaining a certain amount of reliability. We’ve spec’d it such that if we have an internal engine failure, a replacement unit would be relatively cheap. The full spec of the engine is as follows:
– Standard F4R engine bottom end with Phase 1 head (larger exhaust ports)
– Catcam 421s with VVT (inlet cam phasing)
– 182 exhaust manifold
– Full custom 2.5” jetex exhaust system with 100 cell cat & 420mm round silencer
– GSXR1000 throttle bodies with Honda S2000 360cc injectors
– 90mm trumpet length & custom intake manifold
– Emerald K3 ECU
Now that the engine is running and idling, it’s time for us to get it mapped. So, we took it over to Dave Walker @ Emerald to get the job done. Here’s a video of the car on the rollers:
As you might be able to hear, it has a nice smooth delivery of power and it just seems to keep rising! We were reasonably optimistic of what kind of power it might give us, with our 3 estimates between 200 and 210 bhp. So, when we got a result of 224.6 bhp, needless to say we were pretty chuffed.
The power torque curve shows a nice delivery of torque from 4500 rpm upwards, the rev range we’ll be using when out on track. Good solid result all round!
Next up, we just have a few loose ends to tidy up. This includes; flocking the dash and lots of p-clipping now that the wiring is complete, panel in the front end around the radiators and air filter and do a final bit of setup work. We’ve booked up for Oulton Park on April 30th for a bit of a shakedown in time for our first race at Silverstone on May 10th!