Valve sizes, what have I got?

[phazed]

I've just removed the heads from my 5.5 and wonder exactly what they are?

Porting looks good.

Allegedly they are stage 3 but how do the valves sizes compare to the 5.0 and Robs stage 4?

The inlets are about 36mm dia.

The exhausts are about 41mm dia.

[Sardonicus]

More pics please Peter the stock upgrade (not ultra BV or whatever they are called this week) are usually In 41.5 and Ex 35.5 approx but it also depends who supplied the valves REC etc, show us an intake close up pukka BV/500 are more like 43In & 37Ex Spend or V8D would be more informative on this stuff though very discoloured/deposits for such low mileage

Edited by Sardonicus on Friday 11th July 17:45

[phazed]

[carsy]

Whats the difference between these and your 4.6`s then. I hope there is some with the work your putting in.

[phazed]

Just spoke to Simon who reassures me that the heads that I've taken off the 4.6 are much better, phew!

[Sardonicus]

carsy said:

Wha:Dts the difference between these and your 4.6`s then. I hope there is some with the work your putting in.

Remember Peters 4.6 are not stock more like modded 500 and then some.

[carsy]

phazed said:

Just spoke to Simon who reassures me that the heads that I've taken off the 4.6 are much better, phew!

Looks forward to the results.

[neal1980]

phazed said:

I've just removed the heads from my 5.5 and wonder exactly what they are?

Porting looks good.

Allegedly they are stage 3 but how do the valves sizes compare to the 5.0 and Robs stage 4?

The inlets are about 36mm dia.

The exhausts are about 41mm dia.

Exhausts bigger than inlets....really?

[phazed]

Ah, you spotted the deliberate error. 180.

Well done

[SILICONEKIDOBHP]

380 bhp

[Sardonicus]

neal1980 said:

Exhausts bigger than inlets....really?

I was being a gentleman

[db484bhpv8]

neal1980 said:

Exhausts bigger than inlets....really?

Maybe hes building a nitrous monster

[phazed]

Maybe he's just after a few more bhp




when will it stop?