Michael and I now have the car through the IVA test and the certificate and registration documentation is with the DVLA team.
We learnt a few things along the way:
To improve the speedometer accuracy I mounted my VDO speedometer inductive sensor on the gearbox lined up with a Fiat Ducato reluctor ring that I mounted on the differential flange. 54 teeth per revolution results in a really smooth and accurate speedometer. I also ran a screened cable for the speedometer wiring as the speedo was susceptible to interference resulting in the needle flickering whilst at a standstill.
The VDO tachometer was erratic when driven from my Bosch distributor with inductive pickup and electronic amplification! A simple diode in the tachometer feed results in a smooth rev counter needle.
I at last brought the correct size springs (Coilover Spring Faulkner 10.5 Inches Long - 2.25 Inch Inside Diameter | FRS-105-200) for my front Leda shocks and now I can mount the shocks the right way up.
I fitted new front suspension ball joints, top and bottom, plus repacked the Litton steering rack with EP grease. The front steering is now really nice and self centring is as it should be.
I have re-aligned the front suspension to 10 minutes toe in, 40 minutes negative camber, 4 degrees of castor. The rear suspension has 10 minutes of toe in and 1 degree of negative camber.
I have 205/50VR15's on the front and 225/50VR15's on the rear. I am currently running 16psi in the front and 20psi in the rear but I suspect these are too high. 350kgs front axle and 540kgs rear with full fuel tanks, 90litres.
I fitted rear mudguards to meet the wheel covering requirements.
Guy Croft solved my over fuelling problems by recommending that I fit a fuel pressure regulator. My engine ran fine with just a couple of gallons in the fuel tanks but when I brimmed the tanks for the IVA test I could not meet the emissions test. The Silver Top road specification fuel pump is able to overcome the Weber DCOE 45 needle valves and neat fuel drips from the accelerator pump jets! A Malpassi Filter King from Northampton Motor Sport cured this issue and we sailed through the emissions test.
Photograph shows the reluctor ring on the differential flange and the speedometer inductive pickup mounted in my bracket.
Whilst I am waiting for the DVLA to process my paperwork and provide me with a registration number I have a few other things to do:
I am currently working on a steady bar for the engine. I have not used the Lancia head mounted solution as this leads to head gasket issues. I have designed a bell housing mounted solution. I will post some photographs soon.
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