Hi - I've heard a few times that the differences between carburated honda BF75 and BF90 engines is purely down to different carbs and I believe this is true, so I bought some BF90 carbs to fit on my 1996 BF75. What I'd like is for someone to confirm the carbs I bought are definitely from a BF90 and not a BF75, and to confirm if this is true about the carbs being the only "non cosmetic" difference between the two engines? The carbs are Keihin and are marked as 35aa jk23 but I kind of expected them to start with 40AA for BF90 carbs, hence the uncertainty. Many thanks, Jim
Make (of engine): Honda
Model (of engine): BF75
Have tried googling, searching Keihin's website for the carb details, emailing Honda (who didn't want to confirm my question but didn't refute it either), asked on forums but only found other people asking the same thing, and one guy in Australia saying that the BF90 carbs were available as an upgrade kit over there possibly.
You need to get the jet numbers off the jets inside of them first
Ok, which jets do I need to check as there will be a few different ones?Do you know if it is true that the carbs are the only difference between these two models? I checked already that the part numbers are the same for both engines for these parts:Short engine and headCamCDIMufflerCoilsBore & stroke are the same, and so is compression ratio, so it makes sense to be the carbs if all these parts match right?
Relist: Other.Just looking for a quick answer due to a purchase dispute that needs information