Anyone know what numbers are marked on these carbs and are the pre exup the same as the exup (3EN1) setup?

Ta

Ian

Just looking at the iwg and 3en1 manuals and part books.
they are not the same carb, different part numbers and not put together just the same.
weather a 1wg carb works on a 3en1 I cant tell you.

Any idea on the id numbers stamped on, I have a pre exup 1wg but wanted to know amongst other things if I could run later carbs

If i remember correctly you can run later carbs on an 1WG (such as the faltslides from a RRSP) but you can't run the 1WG carbs on an later bike. The carbs wil need to be set right for your bike, so a dyno run is advisable. Atm i am running a set of '91 FZR600 carbs on my 3EN2. They were re-jetted and setup on a dyno but they run really well