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New - opened 74mm bosh throttle body
For reference I have opened up my brand new 74mm throttle body and attached photos.
My micrometer battery is dead so here are some rough dimensions of the duplex gear:
10T - ~ 1/2" diameter ~ 1/2" height
46T - ~ 2" diameter - ~1/4" height
Overall Height ~ 3/4"
A quick look around the internet yielded no metal replacements. If the duplex gear is the failure point, a custom metal replacement one might help.
Possibly even adding a thick nylon compatible lubricant might even fix the issue.
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