If you’re going with these carbs: 1. Make a linkage between the two banks and run a modified cable to connect at the centre using the existing routing. 2. Have adapter rings made to connect the new manifolds to the existing inlet ports. 3. Check you have enough height under the tank to allow the carbs to breathe freely. Getting interesting 😁👍

@jasonparker333

2 ай бұрын

I will give it a go 🙂

Think you can turn the cable connection lever on the carb over so the cable can come down and pull on the lever. Think the end of the operating lever is on a rectangle on the end of the shaft. As to angle, think the original FZ750 engine was designed to lean forward 45 degrees. For the FZR and later think they leaned the whole engine back about 5 degrees so the barrels were in effect only ~40 degrees leant forward.

@jasonparker333

2 ай бұрын

Thanks for your comment, I will investigate

@katywalker8322

2 ай бұрын

@@jasonparker333 my experience with these carbs (and the Dellorto equivalents) is from ages ago on cars (Alfa boxer engines). On those there is one carb per bank with the 2 carbs parallel to each other. And they are about 2' apart! There is a bar across the engine which connects to the throttle cable The ends of this bar then connect to the throttles on the carbs (using small plastic links clipped onto balls - like tiny cheap rose joints). Possible you could do something similar. Throttle cable connect to the bar on one side of the head and the link bar running behind the cylinders. The 2 adjustable rose joint linkages from the bar, 1 to each carb (so you can adjust them close for basic balancing). On the Thunderace engine could maybe mount a bar like this using the bolts for the coolant connections on the back of the barrels). If you connect to the carbs in the centre of the engine it limits any potential issues for clearance between the carbs and the frame. No need to connect up the choke mechanism. Accelerator pumps do the job! On the cars when cold, jump in, pump the throttle 4 times then crank the engine.

@jasonparker333

2 ай бұрын

@@katywalker8322 You certainly know your stuff :-)

Its a good idea, its a pity the idf clones are not well made compared to the weber originals and there is play between the throttle shaft bearing and the carb body, i have a idf 44 clone fitted to my trx850 which is similar to your yamaha with less cylinders

@jasonparker333

2 ай бұрын

Can / Do you have a video of your carb setup?