difference in sti v2-v3 heads
15 June 2009, 08:26 PM
#2
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different castings.. everything is different..
difficult to explain without having them in front of you/I to explain.
Usually the version 3 cam covers are smooth but v2 are ribbed.
They should both have under bucket shims if sti.
Simon
difficult to explain without having them in front of you/I to explain.
Usually the version 3 cam covers are smooth but v2 are ribbed.
They should both have under bucket shims if sti.
Simon
16 June 2009, 06:32 PM
#7
Im sure the STi Version 1 ~ 2 and WRX were Hydraulic - the STi having lightweight Hydraulic lifters.
STi Version 2 RA had solid lifters ( top hat inner shims ).
STi Version 3 ~ 4 were as you said, solid lifters.
Some Version 3 ~ 4 V-Limited and Type R had either small outer shims or the regular STi Inner shims.
It's not often you come across an "un-molested" engine due to the age of them now - even with a fresh JDM import, so its a bit of a lottery when the cam covers come off to see whats lurking in there.
Mick
STi Version 2 RA had solid lifters ( top hat inner shims ).
STi Version 3 ~ 4 were as you said, solid lifters.
Some Version 3 ~ 4 V-Limited and Type R had either small outer shims or the regular STi Inner shims.
It's not often you come across an "un-molested" engine due to the age of them now - even with a fresh JDM import, so its a bit of a lottery when the cam covers come off to see whats lurking in there.
Mick
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16 June 2009, 08:36 PM
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thanks for all the info, i have a v2 sti and they have the solid bucket type, i just wanted to see what differences there was between v2-v3 heads as i have some on the way and wanted to know what to look for when they arrive, why can they take more bhp than the v2 heads then?
16 June 2009, 09:00 PM
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Im sure the STi Version 1 ~ 2 and WRX were Hydraulic - the STi having lightweight Hydraulic lifters.
STi Version 2 RA had solid lifters ( top hat inner shims ).
STi Version 3 ~ 4 were as you said, solid lifters.
Some Version 3 ~ 4 V-Limited and Type R had either small outer shims or the regular STi Inner shims.
It's not often you come across an "un-molested" engine due to the age of them now - even with a fresh JDM import, so its a bit of a lottery when the cam covers come off to see whats lurking in there.
Mick
STi Version 2 RA had solid lifters ( top hat inner shims ).
STi Version 3 ~ 4 were as you said, solid lifters.
Some Version 3 ~ 4 V-Limited and Type R had either small outer shims or the regular STi Inner shims.
It's not often you come across an "un-molested" engine due to the age of them now - even with a fresh JDM import, so its a bit of a lottery when the cam covers come off to see whats lurking in there.
Mick
17 June 2009, 08:23 AM
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just to throw another small spanner in the works my v1 has smooth cam cover's so i'm thinking it's a bit of a lottery at time and only when you get it all opened up do you know for sure.
).
