jnoor

Thanks so much for the reply mate, really appreciate it. I never even thought about whether the centres would be offset. I ended up contacted Naprec to get these done and will be sending them the injector plate too, so I'll ask them about the offset centres. I'm based in the UK so I may try to find a machine shop that can do the same for the plenum. Appreciate the guidance mate, thank you.

Apologies to resurrect such an old thread, but I'm planning on sending my throttles to Garage Ito for the 49mm enlargement, but I'm having difficulty finding out how to perfectly machine the plenum runner diameters to match. LaurelPWR how did you go about CNC machining yours, did you have to get a jig made up for it to keep it straight and true? And just to clarify, is it a gradual taper from the 46mm to 49mm? i.e. it increases bit by bit from 46mm until it become 49mm at the throttle end. Starting the taper from halfway, what kind of distance is that from the throttle end? Apologies for the many questions, would be incredibly grateful for any info.