20b Power

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.