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Keep your chain well oiled with either an aerosol spray on chain lube such as PJI, Silkolene, or Castrol, readily available at any Motorcycle dealers.
You could fit a Scott-Oiler®, which is a small device designed to automatically lubricate motorcycle chains, available at all Motorcycle dealers. It operates by connecting a vacuum pipe to the manifold of your engine, which opens a valve whenever the engine is running. A small bottle of oil is mounted in the car above the chain with a pipe directed onto the chain, and as you drive along, it is automatically lubricated. These are excellent, and only need filling every 1000 miles or so.
To adjust your chain, typically every 700 miles or so, first jack up your car at the rear and place on axle stands. You will then be able to see 2 small adjusters on the differential mounting frame (see photo below). Back off the lock nuts near the rose joints. One is left hand thread and one is right hand thread. You can now adjust the tension of your chain by turning the central section of the adjuster with a spanner.
To check the actual tension, pull and push up and down on the chain, midway between the two sprockets (see photo below). You should be able to deflect the chain about 5mm either side of its static position, giving an overall movement of 10mm. turn the wheels of the car slowly round and re-check the tension in several places. It should be 10mm at its tightest point. Once set, tighten the lock nuts and the job is done!
You will need to set the clutch adjustment on the R1 Yamaha engined cars.
On the clutch housing low down on the drivers side of the engine you will see a short lever. It is attached to the engine with a circlip. Remove the circlip from the splined shaft. Send this part to Z Cars for the push rod to be welded to the arm. Once you have received it back, fit the Mini slave cylinder to your kit on the bracket which is pre-drilled to suit. Then push the push rod as far back into the slave cylinder as far as possible until it bottoms out.
Then, adjust the push rod so that there is 2-3mm of free play between the push rod when it is bottomed out in the slave cylinder and to where it takes up the tension on the clutch.
Fit a strong return spring to the lever arm as the standard return spring will only allow oil to pass slowly back up the pipe and will mean the clutch will slip every time you change gear.
You may wish to fit a bulk head in your car. There are two alternatives, firstly, to fit a panel vertically directly onto the rear rollcage hoop, which is probably the easiest way of fitting it. The other alternative is to fit one in front of the engine and then over it, running level with the bottom of the passenger windows. We would recommend the use of materials similar to 2mm thick aluminium sheet, covered on the engine side with heat reflective material, and on the interior of the car side with sound deadening felt and carpet.
If using the Z Cars radiator and fuel tank, you will be able to now fit 28mm water pipes along the tunnel, avoiding the gear cable and other pipe work. You can fit aluminium tube along the length of the tunnel and flexible hoses at either end.
Both the Hyabusa and R1 have similar systems with water pump low down on the left hand side of the engine, this should be plumbed to the bottom of the radiator and the top hose on the engine to the top of the radiator. We also recommend fitting a radiator header tank in the rear of the car above the height of the cylinder head. This tank should have a small pipe going into it fairly high up and a larger pipe out of the bottom. The small pipe is plumbed to the thermostat housing, which is on the R1 is above the cylinder head, and on the Hyabusa is underneath the fuel injection bodies. The bottom hole in the header tank needs plumbing into the bottom hose. It should be approximately ½" bore and the reason for this is so that the engine always self bleeds any air which may be trapped in the system.
The Z Cars radiator is capable of cooling a 400bhp turbo Hyabusa engine with no problems and fits across the standard subframe at the front of the car.
Z Cars fuel tank also fits in the standard front subframe close to the bulkhead and holds 30 litres of petrol. The fuel lines can be fitted through the tunnel up to the engine in the case of the R1 a small fuel pump and regulator should be placed near to the tank and low down to ensure proper supply. The pressure should be set at 1.5psi.