Hi all,

What are the diameter of the bucket on a V3 STi heads?

Cheers
Chris

 

Hi, haven't had the heads off my V3 yet, but I've done the V4,5,6 WRX (shim over) ones with basically the same lifters and they are the same dimensions as the USDM/JDM 2.5 Sti solids through to 2006 (shim unders which I've used in a 2.5 with 2.0 V6 heads).

Think you'll find the V3 are the same (should be shim overs tho'). Think the only difference may be prior to V3 (pump ups WRX/RS Vs solids Sti/RA).

If all this is true for a V3 then Lifter buckets should be 34.959mm - 34.975, lifter bores 34.994 - 35.016, standard clearance 0.019 - 0.057 and wear limit 0.100.

May be wrong, anyone that cares can correct me. Hope this helps.

 

STi Version 3 + 4 Inner Shim Bucket O/D is 33mm.

Mick

 

Ok Cheers.
I have a V2 STi heads and the bucket are 30mm O/D.

Has anyone rebore the lifter bore to accept a bigger bucket O/D?

 

bttt