With the ongoing tuning issue with the Green Cortina, I have been experimenting with changing the primary and secondary main jets in the twin choke carburettor. (32/36 DGV)
The standard jet size should be 140 & 135, but in recent weeks I had increased the jet sizes to 145 &140, then 147 & 145 and todays test drive would be with 150 & 147.
The drive went well, but to be honest I didn't notice much difference since the last change of 147 &145.
So, I've probably gone as far as I can go with the main jets. The acceleration is fine and the car is very responsive, but I'm getting a lot of popping on the over run. The car also doesn't seem happy at lower revs and doesn't drive smoothly.
I'll need to do a bit more investigating, but I'm definitely improving the car, so I will persevere. It did feel good driving it again today and it was a nice morning to find a cafe and enjoy a nice breakfast! 😊
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