A look at the main differences between the 45 DCOE & 48 DCO SP Weber carburettors and advantages of using one over the other. Venturi range ; 45 DCOE 28mm-40mm 48 DCO SP 36mm-44mm
Good videos .. Learn a lot from them and thank you . I have triple 45dcoe carbs for my S130 280zx L3.2 stroker engine and wrote on it's ventures 38 ! Does that mean its size ? And is it enough for that engine HP estimated from 250HP around 300 HP .
Why don't you get some DCOE pattern throttle bodies off ebay and obtain a crank angle sensor and go to a Megasquirt ECU injection setup? you can buy the ECUs now fully made and ready to go... it's not that hard to get your setup going, and you'll probably unlock maybe 10 - 15 horsepower hiding there, ready to be let out!
I don't know for sure but I think internal diameter is 40 on both. 48 has wider 'mouth' requiring a curve into the 40 dia meaning the air has to travel a little further around the curve, but in the same time so ends up being accelerated by the curve. Not that I know anything at all about carbs so could be wrong… it happened once before! Just here to learn myself.
