For those interested or if you were face palming after seeing another Pod question I have finished going through the forums and I came to a decision. No matter what those Pods are going to have to go. TwoTired really laid down the facts and science behind why removing the air box and replacing with pod filters will just be a headache for me in the long run. If you see this TwoTired, thank you very much! I did like the look of the pod filters, oh well.
I also have been able to get a general idea of what the accelerator pumps actually do. From what I understand is that it improves throttle response that was lost because of the leaning out of the A/F ratio in the 77-78 engines.
So right now I think the best route to take is keep the Mikuni carbs and fit them to the original air box. It is making me wonder that if the "carb cleaning" that was needed was actually a conclusion he came to because of symptoms of using the pod filters.
I am going to pull the carbs off the bike later this week and take them apart to get a good idea of the condition they are in. I will take a lot of pictures.
Question:
Anyone know of a reason that I should go with the original Keihin carbs over the Mikuni?
A lot of confusion here.
The link given did have a lot of useful information especially about how to take things apart without breaking them.
Yes you needed to take apart the carbs and clean them.
BTW in the link given some of the parts were very very old style.
If you do come across a all metal float needle replace the needle and the seat with the modern version that has a rubber tipped needle.
If you replace the all metal float needle and do not replace the seat it will probably leak.
The all metal float needles would get a groove worn in them from engine vibration and would leak. Look at the needle with a magnifying glass.
That air pilot screw with the hole in it must be retained. But is was less fragile than the modern ones. The modern pilot air screw has a spring and "O" ring down in that hole. Look to see.
The old slide needles shown in the link were problamatic because they would get worn on one side and it was not something you could measure with your eyes.
It would idle poorly as a result of the needles on the slide being worn on one side. The modern needles are allowed to float and find the center so they do not just rub on one side of the hole.
About the POD filters.
If you go to pod filters you will have to make adjustments to get the engine to run right. But if you are willing to do the work you could gain about 8 HP.
The mid range will be lean and will require shims under the needles if the slide needles have no adjustment grooves with clips. With clips it will be easier.
So if you have a performance exhaust and pod filters the engine will need more fuel. But make one adjustment at a time and see how it runs on the road.
Do not expect to get the carbs dialed in, in one day.
Most carbs do not have that style of needle anymore.
