Loud Thud Feeling When Braking
Have you pushed the rod back by hand to see if it goes all the way back the same as when the carb is at WOT? If WOT doesn't push it back all the way, that's what you're trying to make work. You can grab the kickdown by hand and push it back to see where it needs to be. Hopefully the way I'm explaining it makes sense?
The part I circled is the rod that goes from the throttle to the actual kickdown bellcrank. It transfers the downward motion to a sideways push motion. When the carb is all the way open, that rod should be down in its furthest down position, and the kickdown should push all the way back at the same time. If you adjust the rod and the carb is still not pushing it back, try to unbend some of the rod I circled and lengthen it. The rod should have a U in it to make some minor adjustments. The rod could also be installed upside down I think. The ends are similarly shaped. Also, make sure when you push the gas pedal all the way to the floor, that the carb opens up all the way too. Your throttle cable could be out of adjustment as well, which the bolt for that you can see in the picture, you loosen it, move the cable up or down, and then tighten again, and see if it is open all the way at petal to the floor. Ideally as well when driving, if you mash it to the floor, the car should downshift.
If you spend a lot of time adjusting it, and the issue is not resolved, and you're sure the rod goes back all the way, then I'd check a seperate system for the problem.
Have you pushed the rod back by hand to see if it goes all the way back the same as when the carb is at WOT? If WOT doesn't push it back all the way, that's what you're trying to make work. You can grab the kickdown by hand and push it back to see where it needs to be. Hopefully the way I'm explaining it makes sense?
The part I circled is the rod that goes from the throttle to the actual kickdown bellcrank. It transfers the downward motion to a sideways push motion. When the carb is all the way open, that rod should be down in its furthest down position, and the kickdown should push all the way back at the same time. If you adjust the rod and the carb is still not pushing it back, try to unbend some of the rod I circled and lengthen it. The rod should have a U in it to make some minor adjustments. The rod could also be installed upside down I think. The ends are similarly shaped. Also, make sure when you push the gas pedal all the way to the floor, that the carb opens up all the way too. Your throttle cable could be out of adjustment as well, which the bolt for that you can see in the picture, you loosen it, move the cable up or down, and then tighten again, and see if it is open all the way at petal to the floor. Ideally as well when driving, if you mash it to the floor, the car should downshift.If you spend a lot of time adjusting it, and the issue is not resolved, and you're sure the rod goes back all the way, then I'd check a seperate system for the problem.