Johns Zed in action at the Skylines Australia Drag Day - October 30th at WSID

John was able to record a best pass of 11.5 - Click the link below for a short movie of the run

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The graph to the right shows the Zed's power output after adjustment of the cam gears and new custom water injection system developed for the car.

We also increased boost from 21psi up to 23psi resulting in 384.2 Kw at the wheels

Another dyno run - 380.5 Kw

At the time of the previous 384.2Kw dyno run, the cars tacho was not calibrated to the dyno.

Dual fuel filters for less restriction, mounted inside the passenger side front wheel splash guard, keeping all weight over to the passenger side again.

This shows the underneath of the rear of the car with the alloy belly pan removed. The picture also shows measures to have all weight moved to the rear & passenger side where possible.

Fibreglass wrapping of the exhaust is used to keep heat away from the diff and fuel tank.

Also added, is a 3.5 inch titanium rear muffler, and an Accusump (Accumulated sump) to help maintain constant oil pressure, with the added feature of oil pressure before startup using a solenoid and switch mounted in the cabin.

With more tweaking and preparation, we have managed an incredible 407.5 Kw at the wheels!

This power was achieved using 109 octane fuel and further increased timing

For Johns second outing at WSID in the Zed, adjustments were made to the car to suit drag racing including the fitment of BF Goodrich Comp TA drag treaded street radials.

The suspension setup was also changed.

The result was a 10.8 at 130.85 MPH

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Here we see flow bench testing being performed on our extrusion honed plenum with lower plenum match ported to heads and 55mm throttle bodies being used.

Johns new engine for 2005, this time with bigger turbo's again and even further development in the quest for greater horsepower.

 

Ben and Adam fitting the new engine to Johns 300zx

New Porsche lightweight monoblock brake calipers

 

This picture shows the new Supertech .5mm oversized Inconel exhaust valves with
debured and linished tapered domes to each port. Flow bench testing showed good gains in the Supertech larger valves with rolled in base of the stems. We also experimented on flow bench test with different cuts and angles of valve seats. We are using Custom bronze valve guides that don't protrude into the inlet and exhaust ports as much.

Also used, are 40 thou oversized ACL pistons and stronger valve springs, cyogenic treated to prevent hot spots and fatigue and retain consistent valve spring pressure
when hot in race conditions. Further features include a deburred block and main water jackets
Here we see the extra water jackets that we discovered in the block that did not match up with head gasket or heads so we drilled these out for better cooling. We also used our new Bakelite gaskets on the inlet plenums to reduce heat soak from heads.

New Plazmaman 90mm bar and plate intercooler with more efficient cooling as it has a quality vacuum braised core with more and finer tubulators. Datalogging at the track showed at least an 8 c drop in inlet temperatures at similar ambient.
Custom belly pan for improved aerodynamics, less drag with ducts for rear brakes, fuel cooler and diff cooling.