Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[moiphy]

was just speaking to a black hac driver who i was saying to that i had a 2.5v6 miggy and he was saying u could stick a 2.5 head onto a 3.0 block.would this change performance.anyone clued up on this cheers

[serek]

was just speaking to a black hac driver who i was saying to that i had a 2.5v6 miggy and he was saying u could stick a 2.5 head onto a 3.0 block.would this change performance.anyone clued up on this cheers

why you want use 2.5 heads???

[Marks DTM Calib]

Because it would increase the compression ratio......but not give any benfits in this case as its already pretty high....it might mean you have to run with premium fuel to!

[Kevin Wood]

I think we worked it out once, didn't we? About 12.7:1 rings a bell.

Wouldn't gain you anything on its' own, as said, and if you used 95 RON at that level it would just go into knock retard and give you less power, if not worse.

On LPG it might be an interesting mod to try, if you're prepared to sacrifice running properly on petrol.

Kevin