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[v6 steve]

hi there not been on for some time, i have a calibra with a omega 3.2L engine, can some one tell me are the heads the same as a 2.5 or are they diffrent ? it looks like my cam pully has sliped and bent some valves i have 4 2.5 heads kicking about so can i use the valves out of them or will it need to be 3.2 ones?

thanks for any help you can give

[charlie]

dont quote me on this but the 2.6,3.2 have an extra hole for coil pack.there is some thing in faq or matanice guild with the difference in a 2.5 head and a 2.6 head hth AS for the internals of the heads i dont know if they are interchangable,i m sure some with the info will be along shortly.

[Lazydocker]

Afraid they're different IIRCC... May be able to get away with 3.0 heads, although the holes for the coil packs wont be there :-/

[feeutfo]

no idea re heads but the 3.2 cam covers can be fitted for the coil pacs, fairly sure.

needs a reply from the master to be sure though.

[v6 steve]

iv pulled the valves out a 2.5 head i had kicking about and they fit in the 3.2 head, EPC is saying they have diffrent part numbers tho dose anyone know if i can use them?

[JamesV6CDX]

iv pulled the valves out a 2.5 head i had kicking about and they fit in the 3.2 head, EPC is saying they have diffrent part numbers tho dose anyone know if i can use them?

I think 3.0 / 3.2 exhaust valves are sodium filled... I think otherwise, they should fit?

[Andy H]

iv pulled the valves out a 2.5 head i had kicking about and they fit in the 3.2 head, EPC is saying they have diffrent part numbers tho dose anyone know if i can use them?

I think 3.0 / 3.2 exhaust valves are sodium filled... I think otherwise, they should fit?

I think the bigger engines should have a larger combustion chamber volume to keep the same compression ratio :-/

[v6 steve]

iv pulled the valves out a 2.5 head i had kicking about and they fit in the 3.2 head, EPC is saying they have diffrent part numbers tho dose anyone know if i can use them?

I think 3.0 / 3.2 exhaust valves are sodium filled... I think otherwise, they should fit?

I think the bigger engines should have a larger combustion chamber volume to keep the same compression ratio :-/

yee the heads are diffrent but are the valves the same iv tryed them in the 3.2 head and they seem to fit and seat ok so do i use them or buy new ones?

[2woody]

3.0 & 3.2 have sodium-filled exhaust valves, which will last longer. (they conduct heat away quicker and are therefore less likely to burn out)

2.5 do not have sodium-cooled valves.

you'll probably be ok to use the 2.5 ones, but use all 12. In any case, I'd get them professionally ground.

[Andy H]

iv pulled the valves out a 2.5 head i had kicking about and they fit in the 3.2 head, EPC is saying they have diffrent part numbers tho dose anyone know if i can use them?

I think 3.0 / 3.2 exhaust valves are sodium filled... I think otherwise, they should fit?

I think the bigger engines should have a larger combustion chamber volume to keep the same compression ratio :-/

yee the heads are diffrent but are the valves the same iv tryed them in the 3.2 head and they seem to fit and seat ok so do i use them or buy new ones?

Oops, sorry, was still thinking about head differences.

My assumption is that sodium cooled exhaust valves would be most important for autobahn trips or towing caravans.  :-/

[v6 steve]

its was only the inlet valves that got bent on one bank so im thinking the 2.5 ones should do
thanks for your help guys

[Darth Loo-knee]

Afraid they're different IIRCC... May be able to get away with 3.0 heads, although the holes for the coil packs wont be there :-/

Depends Paul, if the 3.0 engine is a newer one it will have the two per side tapped holes for the coil packs