Tripower
Safety Car
Joined: Oct 1999
Posts: 4,101
Likes: 10
From: NorCal
If you study the spring and linkage design (which is correct in this photo), you will notice that the throttle cable and spring work against each other using the trottle body as a fulcrum. This leads to the very common badly worn throttle body and mixture problems due to vacuum drawing air past the shaft. By adding a spring that attaches at the top of the linkage (I use the large hole) and the front fuel line, it unloads the throttle shaft and greatly reduces the wear on the throttle body. This really only needed if it is driven much. Mine was worn out when I got it so I added bushings to the throttle body and the aforementioned spring. I drive mine daily.
The Quadrajet equipped GM cars have the same issue, and benefit from the same fix.
For the NCRS folks, you can just remove the added spring for a show.
Hans
The Quadrajet equipped GM cars have the same issue, and benefit from the same fix.
For the NCRS folks, you can just remove the added spring for a show.
Hans
Thread Starter
Racer
Joined: Mar 2009
Posts: 331
Likes: 1
From: Brooklin Ontario
If you study the spring and linkage design (which is correct in this photo), you will notice that the throttle cable and spring work against each other using the trottle body as a fulcrum. This leads to the very common badly worn throttle body and mixture problems due to vacuum drawing air past the shaft. By adding a spring that attaches at the top of the linkage (I use the large hole) and the front fuel line, it unloads the throttle shaft and greatly reduces the wear on the throttle body. This really only needed if it is driven much. Mine was worn out when I got it so I added bushings to the throttle body and the aforementioned spring. I drive mine daily.
The Quadrajet equipped GM cars have the same issue, and benefit from the same fix.
For the NCRS folks, you can just remove the added spring for a show.
Hans
The Quadrajet equipped GM cars have the same issue, and benefit from the same fix.
For the NCRS folks, you can just remove the added spring for a show.
Hans
