There have been many 20b conversions into FD Rx7s over the past years with some being more successful than others. My own experience was with a freinds 1994 Fd3s and the addition of the 20b Cosmo powerplant, first in stock form and then in rebuilt form with a single turbo replacement. From the outside this car looked stock and other than the YRX20b number plate you would suspect nothing.The stock Cosmo engine is no slouch and the huge torque combined with the low weight of the Fd was truely enough for a road car. 400 horse power with stock turbos is easily achievable once the exhaust and computer are replaced. However after some massive knocking caused by lack of fuel and bad management from a "link" computer, an apex seal somehow found its way from the engine through the turbo.
A successful rebuild and the addition of a Garret t04E Single with all the accessories needed to achieve 650+hp, transformed an already quick car into an absolute monster. It was a task that only took money and a bit of knowhow provided by Canberra's Jakes Performance. Fuel supply at this level of horse power is your only real worry so Rochesters 1000cc injectors, malpasi fuel pres reg, microtech MTX 12 Engine Management Computer and a Bosch 040 in tank pump capable of 600hp (probably needed bigger) provided a healthy power of 320kw at the rear wheels. This was achieved on only 11psi...! The Lazy cosmo plant was waiting for more so there was still a huge opportunity for outright power. ( if you need it )
The only real issue is the extra weight in the front which can cause bump steer if the crossmember is not modified correctly. But then there's getting 650Hp to the ground through the rear... It is a task even Pirreli PZero can't cope with. S-Tyres or Street Slicks please!
Seeing this beast blast past track spec Porsche 911 tubos on track is a smile evoking experience.
If you ever get the chance to ride in one of these ... Don't say no.
Russ.

For the road cars, the Fujita single turbo Fd sits near the top with a recent 59"352. Many of RE-Amemiya cars also sit in this range from 59" - 1'01". The T78 equipped Greddy G9 hit 1'01" flat in 2002. The Revolution boost-up Fd recently logged a 1'01"375 so its all pretty close and whether you have 450hp or 350hp there are many factors affecting times.



Once the glass fibre's hardened, I apply clay - and this allows me to shape to exactly how I want the car to be. Then, once that stage is completed, I spray the bodywork with primer, so I can check and completely erradicate any minor imperfections. Upon completion of the design, I use the 3 dimensional plotter to log the complete shape of the design to within 0.1mm. With this data, I can re-create the work by reversal of the operation. I can also use the 3 dimensional plotter to enable me to get exact symmetry between each side of the design and so get a perfect design as I complete it."
























