Hi all, im looking for an equivelant shim to use on my 4age race engine or someone who can supply some for me. The shims are the type which sit in the top of the spring top cap. I think they are the original TRd type. They are around 12-12.5mm wide. please let me know if theres an alternate, or i will have to get my man to turn some off for me.

many thanks mike

There are different sizes of the shims for setting proper cam lobe clearances.

What I'm curious about is how long they last and how often the clearances need to be checked. My Honda has me spoiled, with its adjustable jam nuts for setting the valve / cam lobe clearances.

yeah shims suck...

At least you can still shim the valves to spec without the direct need to remove the cams etc.
Imagine you would have to mill down the entire bucket, palce the cams again, measure...damn, still not right, cams out again, buckets out again etc, etc and that 16 times!

Shims are not as bad as some people think

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