jg33replica

Hi mate,
                  The car belongs to my son and I reckon he was talkin to you as you said. I have a new O2 sensor kit that I was going to set up on my Falcon to tune tunnel ram carbs , We intend to weld a bung onto Cortina extractors and give it a go.  I have had a breakthrough with the crossflow. I decided to play around with the carb tune and change jet sizes. I went a full 5 sizes bigger on primaries to see if I could make something change. It did exactly that it made it much worse , it caused it to breakdown at 2200.  Next I went back a heap of jet sizes on primaries from where I started and it improved the thing a whole heap. It is twice as responsive down low and revs straight past 4000 without a problem. it does still however play up a little higher up. Next I will fit a decent Tacho as Not sure how accurate Cortina one is , O2 sensor , and get some more jets to play with.  thanks for all the good advice everyone.

Hi mate,
                  The car belongs to my son and I reckon he was talkin to you as you said. I have a new O2 sensor kit that I was going to set up on my Falcon to tune tunnel ram carbs , We intend to weld a bung onto Cortina extractors and give it a go.  I have had a breakthrough with the crossflow. I decided to play around with the carb tune and change jet sizes. I went a full 5 sizes bigger on primaries to see if I could make something change. It did exactly that it made it much worse , it caused it to breakdown at 2200.  Next I went back a heap of jet sizes on primaries from where I started and it improved the thing a whole heap. It is twice as responsive down low and revs straight past 4000 without a problem. it does still however play up a little higher up. Next I will fit a decent Tacho as Not sure how accurate Cortina one is , O2 sensor , and get some more jets to play with.  thanks for all the good advice everyone.

Hi mate,
                  The car belongs to my son and I reckon he was talkin to you as you said. I have a new O2 sensor kit that I was going to set up on my Falcon to tune tunnel ram carbs , We intend to weld a bung onto Cortina extractors and give it a go.  I have had a breakthrough with the crossflow. I decided to play around with the carb tune and change jet sizes. I went a full 5 sizes bigger on primaries to see if I could make something change. It did exactly that it made it much worse , it caused it to breakdown at 2200.  Next I went back a heap of jet sizes on primaries from where I started and it improved the thing a whole heap. It is twice as responsive down low and revs straight past 4000 without a problem. it does still however play up a little higher up. Next I will fit a decent Tacho as Not sure how accurate Cortina one is , O2 sensor , and get some more jets to play with.  thanks for all the good advice everyone.

Hey, I forgot to mention I did a fuel flow test.Carter rotary Pump filled a 4 liter container in 1 minute 12 seconds. Had the container above carby. I have no idea if that's good or bad. That pump runs at 5 psi at all revs. I have had a holley blue dummied up to test the fuel pressure theory and it made no difference.