HENKYO Throttle Shaft Bushing Repair kit Repair 5/16 Shaft Worn Carburetor 1 Reamer 8 Bushing

Speedy delivery, well packaged. Reamer came in it’s own protective sleeve case as well as the bushings themselves were also in a nice neat well pack plastic clip box. Overall impressed despite the previous negative reviews for the cost of the kit.As for the installation, I would suggest making sure the chuck of whatever drill you use is straight and true as possible for this job. I would also suggest pre drilling the hole for the throttle shaft in the normal forward position of the reamer first, the reamer is tapered at the front end of the bit to start a bevel in the hole which is what I did, then installed the bit rearward in reverse drill direction to finish boring it out. Worked and cut well, bushings were tight enough O.D. to tap lightly into new bores with a long bolt and washer. I also used lock-tite for extra insurance. My original primary throttle shafts fit tight and right now. I installed these on my mid 80’s Quadrajet primary throttle shaft and am very pleased to have extra bushings for future jobs.

Reamer was to big for the bushing but they corrected the problem with larger bushings.

The 3/8” one I bought worked great, but this 5/16” one had issues. It drills fine, but then the brass piece that’s supposed to tap in just loosely fall in and drops right out. I had to job weld it in place and cross my fingers. Again, no problems with the 3/8” kit but this one is not great.

Used on my autolite 1100 carb.

The special drill bit became dull after one use even with tap oil to protect the inferior metal from the Made in China crap that everybody sells now. I will look for a replacement made in Japan or maybe Germany that is made by real Germans!