Underbucket shims

Takumi Joined: 09 Sep 2005 Posts: 237 Location: Oxford U.K

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

Posted: Sat Aug 16, 2008 9:10 pm Post subject:

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.

Takumi Joined: 09 Sep 2005 Posts: 237 Location: Oxford U.K

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

Takumi Joined: 30 Mar 2008 Posts: 259

Consider using the Yaris under bucket shims, these are one piece and are much lighter.

Posted: Wed Aug 27, 2008 10:32 am Post subject:

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.

Takumi Joined: 30 Mar 2008 Posts: 259

Try contacting friends on this board to get you the shim sizes you need for your head adjustment.