Underbucket shims
08-16-2008, 08:48 PM
Post: #1
Underbucket shims
Anyone have a clue what to use ?
I have seen a 'top hat' type used that sits on the valve stem and I know TRD do a spring retainer that uses a flat 9.5mm shim that fits in the top. I think the TRD ones use non standard collets (keepers) also. Any other issues with the TRD type ? thanks tc

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08-16-2008, 09:10 PM
Post: #2
Underbucket shims
Yaris ones. Yaris (vitz?) has the same size. Its well known in japan and also found on club4ag. I am building an engine which also has it. Just buy the cams. Measure with the original buckets than buy one yaris. Measure what you need and order form toyota.

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08-16-2008, 10:09 PM
Post: #3
Underbucket shims
Thanks for the reply. I should have made it clear that I already have the underbucket cam followers, just need to sort the shims now

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08-27-2008, 05:37 AM
Post: #4
Underbucket shims
Consider using the Yaris under bucket shims, these are one piece and are much lighter.

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08-27-2008, 10:32 AM
Post: #5
Underbucket shims
Totta - The set up you have described sounds identical to the shim/bucket set up found on the late spec 3sgte (and possibly other engines)

Its an under bucket arrangment with a small shim that sits in the spring retainer recess under the bucket - the shim is about 10mm across or there abouts from memory.

The shims can be found on 1994 onwards SW20 turbo or a ST205 GT4.

Sounds like you have confirmed what I stated a whle back that the under bucket arrangement on the late 3SGTE will also fit the 4AGE head.

Your looking at about £40 for a full set of shims for the head - Toyota can supply them in every size but you will need to get 1 first so you can work out the tolerances and what you need for the rest of the 16 valves.

I will see if I have any spares kicking around in the garage from the last gte rebuild i did.

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09-22-2008, 04:28 AM
Post: #6
Underbucket shims
Try contacting friends on this board to get you the shim sizes you need for your head adjustment.

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