It's not set in stone just yet but it's definitely info that should be documented
Basically there are 3 sizes of valve buckets; small, medium and large
Large are rarely used and medium are by far the most common.
From what it seems 5sfe's (gen 2 and 3) use small buckets, 2jz's and 4ages.
Pretty much everything else uses the medium ones (3sg, 2gr, 1mz/3mz, etc)
Only the 3vz-e uses the large one from what I've read.
So for those of you who want to go to shimless buckets grab 1szfe buckets from yaris's
It's a great way to lower the valvetrain weight and keep from breaking shims with higher lift cams.
These are the forums I pulled this from:
http://club4ag.com/tech-data/valve-lifter-tuning-by-1sz-fe-parts-for-the-16v-4a-ge/http://www.supraforums.com/forum/archive/index.php/t-151009.htmlI have no easy way to test this since I'm not working with my 5sfe anymore but it is very worth while to go this route.
The lighter you make the valvetrain the easier it will rev up and down and also less prone to valve float it will be.
Both very good reasons to go to these.
If you do go this route please post your findings with pics.
