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[GmasterT]

I know 3.0 cams are an upgrade on the 2.5, but I have some 3.2 ones... is that a good look/option?

[ngrainqey]

you might be better running them with 3.0 heads as i think they're a different volume aswell so it might run a bit better matching nearer to what it should be for the cams to match for the timing but you'll also need (if they're higher flow) 3.0 or 3.2 injectors  to account for the air to fuel ratio with the higher amount of air capacity

motronic engine management isnt bad regarding tuning because it'll just try to make the best with what its got, on turbo engines you can have blow off valves where as on later engine management like with my ME7 volvo, it'd spit its dummy out

HTH

[Kevin Wood]

3.2 cams aren't significantly different to the 3.0 cams. may even be identical.

As to the heads, these are basically the same too. I think the extra combustion chamber volume on the 2.6 / 3.2 is from dished piston crowns.

Injectors are also the same between 2.5 and 3.0 and 2.6 and 3.2 although I think the 2.6/3.2 are different to the 2.5/3.0.

Kevin

[serek]

I know 3.0 cams are an upgrade on the 2.5, but I have some 3.2 ones... is that a good look/option?

intake cams on 3.2 are same like on 3.0 only exhaust cams are different but still can use them on 2.5.

my mate run his 2.5 on 4 X intake cams 8-)

[mantahatch]

I know 3.0 cams are an upgrade on the 2.5, but I have some 3.2 ones... is that a good look/option?

intake cams on 3.2 are same like on 3.0 only exhaust cams are different but still can use them on 2.5.

my mate run his 2.5 on 4 X intake cams 8-)

[/highlight]

How do the exhaust gases get out then ?





Sorry could not resist that, I am really not that silly. 

[Martin_1962]

3.2 cams aren't significantly different to the 3.0 cams. may even be identical.

As to the heads, these are basically the same too. I think the extra combustion chamber volume on the 2.6 / 3.2 is from dished piston crowns.

Injectors are also the same between 2.5 and 3.0 and 2.6 and 3.2 although I think the 2.6/3.2 are different to the 2.5/3.0.

Kevin

I think it may be head volume as well

2.6 3.2 lower compression is due to deeper piston crowns

[Kevin Wood]

3.2 cams aren't significantly different to the 3.0 cams. may even be identical.

As to the heads, these are basically the same too. I think the extra combustion chamber volume on the 2.6 / 3.2 is from dished piston crowns.

Injectors are also the same between 2.5 and 3.0 and 2.6 and 3.2 although I think the 2.6/3.2 are different to the 2.5/3.0.

Kevin

I think it may be head volume as well

2.6 3.2 lower compression is due to deeper piston crowns

Ahh, possibly. Someone needs to measure the volumes. If that were the case, a 3.0 head might be an upgrade for a 3.2 to bring the compression up. Sure someone would have tried it if that were the case. :-/

[GmasterT]

Ummm... Cant be arsed with head changes, just some simple bolt ons (or cut offs in the case of the cats )

If its an upgrade then I'll do it when/if I get the cambelt done, may be worth looking for a pair of 3.0 intakes then.

I'll put some pics up of it anyway 

[Marks DTM Calib]

3.2 cams aren't significantly different to the 3.0 cams. may even be identical.

As to the heads, these are basically the same too. I think the extra combustion chamber volume on the 2.6 / 3.2 is from dished piston crowns.

Injectors are also the same between 2.5 and 3.0 and 2.6 and 3.2 although I think the 2.6/3.2 are different to the 2.5/3.0.

Kevin

I think it may be head volume as well

2.6 3.2 lower compression is due to deeper piston crowns

Its not head volume.

The compression was reduced by altering the stroke so the pistons do not reach the tops of the bores.

[Martin_1962]

3.2 cams aren't significantly different to the 3.0 cams. may even be identical.

As to the heads, these are basically the same too. I think the extra combustion chamber volume on the 2.6 / 3.2 is from dished piston crowns.

Injectors are also the same between 2.5 and 3.0 and 2.6 and 3.2 although I think the 2.6/3.2 are different to the 2.5/3.0.

Kevin

I think it may be head volume as well

2.6 3.2 lower compression is due to deeper piston crowns

Ahh, possibly. Someone needs to measure the volumes. If that were the case, a 3.0 head might be an upgrade for a 3.2 to bring the compression up. Sure someone would have tried it if that were the case. :-/

Late 2.5 and 2.6 heads are the same

Look at the pistons when heads are off

2.x heads on a 3.2 would boost CR

[Martin_1962]

3.2 cams aren't significantly different to the 3.0 cams. may even be identical.

As to the heads, these are basically the same too. I think the extra combustion chamber volume on the 2.6 / 3.2 is from dished piston crowns.

Injectors are also the same between 2.5 and 3.0 and 2.6 and 3.2 although I think the 2.6/3.2 are different to the 2.5/3.0.

Kevin

I think it may be head volume as well

2.6 3.2 lower compression is due to deeper piston crowns

Its not head volume.

The compression was reduced by altering the stroke so the pistons do not reach the tops of the bores.

Head volume with 2.5 and 3.0 NOT 2.5 and 2.6 - that is piston crown depth