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This is interesting - http://www.mr2project.com/shimless-buckets/

I thought this was common knowledge in the 3S circles?
The shimless buckets work in 1/2/3UZ, 1/2/3MZ, 3S and 1/2ZZ motors.

I had never looked into it. I will try these next time.

I measured it all up properly today. The shims that were in the engine were between 0.4mm and 0.5mm too thick. All 8 of them were within that range.

Ah f#ck you had to say Ferrea.....
 
 
Known valve issues with the material of a batch of those valves!
 
http://www.mr2oc.com/showthread.php?t=438293
http://www.mr2oc.com/show...ghlight=ferrera+valves

Glenn, I'd definitely look at removing the head to check the valves, there have been issues with ferrea valves mushrooming, not generally comp + valves though, I'd definitely go looking if its just 'happened'.  Whats the history of the motor, how long ago were the valves fitted, new seats, etc?

Especially someone writing this in one of those threads:- "all of my intake valves were toast and my exhaust were fine"

I think Surok had an issue my my old cars engine that had something to do with the 1mm OS ferrera valves. Think he got the new ones for free as suggested in the Mr2oc thread above.

-Totenkopf-
Glenn, I'd definitely look at removing the head to check the valves, there have been issues with ferrea valves mushrooming, not generally comp + valves though, I'd definitely go looking if its just 'happened'.  Whats the history of the motor, how long ago were the valves fitted, new seats, etc?

The engine has done a few dyno sessions and 4 track days since a complete build. I'll contact ATS and see what they have to say. I bought the valves in early 2013.
You guys are making me take the head off. I REALLY don't want to do that. This was going to be my last engine build.

I swear you and Steve are cursed.

For me, this is a minor issue!!!