are these carbs ok to use on a pinto
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Should be OK. what size is the inlet diameter there? 36-38mm should be fine. Webers would have a smaller choke.

40~42mm would be much better, using zzr1100 on my zetec.

pic of other side
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I wonder how easy it would be to get different jets to suit the engine size?

As easy as buying a set of indexed drill bits

Hi I have zx9r carbs fitted to a 20l pinto there 41mm chokes and the jets where drilled out to 1.7 mm
try doing a serch about this subject
Jacko