Anyone using the rotaryworks throttle body?
#5
MECP Certified Installer
![](https://www.rx7club.com/images/misc/05_year_icon.png)
#6
It looks fancy, shiny & well machined, but not all that well engineered on a system level. There's no smoothing out of those three bores where they merge into the one large bore. The throttle will be very imprecise (basically just on or off) at low speeds & loads since, from what I can tell its just a direct, constant-radius cable-pull, and doesn't do anything to try to keep the secondaries inactive at low loads to keep flow velocities up. During warm-up it'll likely be a real bitch to drive with too. I don't really see the point over a cleaned-up stock unit.
#7
I have used it on a full bridge port. Part throttle is a big pain in the *** (Bridgeport didn't help and this car may have had other issues). Remember that stock throttlebodies have 3 butterflies for a reason. The ports are supposed to open in two-stages It has no dashpot, cruise control, or fast idle either. I don't think it's worth it for most street setups up to 450-500rwhp.
Also, the one I worked on definitely was designed for an FD UIM. Maybe they make one that will bolt to an FC UIM. The stud locations are different between FC and FD and the FD has bigger runners.
Also, the one I worked on definitely was designed for an FD UIM. Maybe they make one that will bolt to an FC UIM. The stud locations are different between FC and FD and the FD has bigger runners.
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