Woojen

Hello there, i wonder if all the 2ltr heads is the same if they are all empty that is?

I mean ALL Non AVCS heads has the same physic forms just that the "interiors" in the head is the thing that makes them different?

Basicly if i can use my V3 Classic head interiors in a lets say v5 or new age non AVCS head?

Best regards

merlin24

iTrader: (1)

A lot of the bare head castings are the same and as you said, the valvetrain differs.
The Version 3~4 valvetrain is not interchangable with the Version 5 onwards heads as these use dual thrust camshafts,larger diameter buckets,different length valves to name just a few things differences.

Mick

Woojen

Thanks alot, so i wont be able to fit all my v3 head stuff into a totaly empty v5+ head?

Maybie i should aim to buy a complete empty ej20 head from a company that CNC the combustion chamber to be like EJ25 heads, reason why i wanna do that is because i wanna use the Engine loom i have for my Apexi PFC ¨

gazney101

iTrader: (5)

the bolt patterns for the inlet manifold are different from newage to classic, newage are inline i think and classic are offset, however im not so sure as to what year they changed because my mates turbo 2000 on an s reg had inline as did my 03 wrx and my 05 sti
good luck

merlin24

iTrader: (1)

Version 1~4 have Inline bolt holes for the inlet manifold, Version 5 (1999) onwards have a staggered pattern.

Mick