Once and for all - 12V 2.5 Heads vs 12v 3.0 Heads;
Posted: Thu Apr 14, 2005 12:42 pm
Someone had a small "disagreement" with me about the 2.5 and 3.0 heads being the same, so I checked and they are not...
Dimensionally they appear to be the same and they are on the outside in terms of the mounting and the gasket seal etc. That's it.
The 2.5 has MUCH smaller valves and the ports are somewhat smaller as well. The 3.0 head actually has a larger (deeper) combustion chamber than the 2.5 head too.
I heard about somebody else here having that discussion a bit ago and I thought that I would do some research on the subject to help clarify it.
Dimensionally they appear to be the same and they are on the outside in terms of the mounting and the gasket seal etc. That's it.
The 2.5 has MUCH smaller valves and the ports are somewhat smaller as well. The 3.0 head actually has a larger (deeper) combustion chamber than the 2.5 head too.
I heard about somebody else here having that discussion a bit ago and I thought that I would do some research on the subject to help clarify it.