Valve adjustments GS700

[cyberdork]

Imagine a dinner plate sitting on top of a spring. While under the tappet, the feeler gauge is forced to bend into a "U" shape.

[jabberjoe87]

i'm glad this thread was brought up, i am going to do a valve adjustment on my 750 over the winter. I do have a question though--does anyone have experience with the non TSCC engine, where shims would be involved? I know what the general idea of a shim does, but some insights would be greatly appreciated.

[rapidray]

One thing to remember when adjusting valves that have a forked rocker type cam follower like the 16V GS engines: use two feeler gauges at the same time (one each valve) and make sure the clearance on each valve in the pair is exactly the same. You don't want to have one valve opening earlier than the other or the forked rocker arm will be under a twisting load which is not good for cam and rocker wear.

Good luck.

I've been doing valve adjustments on 16 valvers since 1980 & have NEVER found a need to use 2 feeler gauges. Street motors or race motors either one. Ray.

[BassCliff]

i'm glad this thread was brought up, i am going to do a valve adjustment on my 750 over the winter. I do have a question though--does anyone have experience with the non TSCC engine, where shims would be involved? I know what the general idea of a shim does, but some insights would be greatly appreciated.

Hi Mr. jabberjoe87,

I've got the procedure pretty well documented on my website. Feel free to download your own copy of the PDF file. It's got lots of pictures.

Thank you for your indulgence,

BassCliff

[chef1366]

Imagine a dinner plate sitting on top of a spring. While under the tappet, the feeler gauge is forced to bend into a "U" shape.

The dish shape is not a shim? You have a sixteen valve motor?

I only do one side of the tappet at a time also. Never used two feeler guages. Might be a good idea though.