fivestring
CB750 Member
I am into renewing a set of Kei Hin carbs (PD42B) and I don't know what size jets are in it.
No known history on the bike. Just bought it and it is very evident someone has had the carbs apart. The airbox and mufflers are gone and I don't know if the carbs were rejetted to run like that or not, I really doubt it.
The carbs were reassembled wrong (two throttles open, two closed) and I have tried cleaning the tops of the jets to get numbers and there simply are no imprints at all on these jets. So,
1. What would be a good starting jet size for running pods and an un-baffled header or open pipes on an otherwise unmodified engine?
2. How many sizes can I go without changing the other jets?
3. Where can I find a good diagram showing proper assembly of these carbs?
Thanks in advance.
No known history on the bike. Just bought it and it is very evident someone has had the carbs apart. The airbox and mufflers are gone and I don't know if the carbs were rejetted to run like that or not, I really doubt it.
The carbs were reassembled wrong (two throttles open, two closed) and I have tried cleaning the tops of the jets to get numbers and there simply are no imprints at all on these jets. So,
1. What would be a good starting jet size for running pods and an un-baffled header or open pipes on an otherwise unmodified engine?
2. How many sizes can I go without changing the other jets?
3. Where can I find a good diagram showing proper assembly of these carbs?
Thanks in advance.