cylinder head dimensions

[totta Crolla]

Does anyone know if there is a quick way of telling if a head has been skimmed ?
Some manufacturers give a measuring point and minimum allowable dimension.
Thanks,
TC

[sergiocharged]

totta Crolla Wrote:Does anyone know if there is a quick way of telling if a head has been skimmed ?
Some manufacturers give a measuring point and minimum allowable dimension.
Thanks,
TC

as far i understood
yes ,are 3 to 5 depends of the engine (not specified by you)
and you can see it,depending the model and year of the engine
like a groove.or shop mark.

[totta Crolla]

not specified because I thought it would be obvious.... 4age 16v...

Anyway I think I got what you are saying but can you tell me where the marks are and what the stock dimensions are ?

[woper]

measure combustion chambers volume. The easiest way. I wouldn't run under 35cc/ea. if you're not runnin high octane fuel, good ignition control and knock sensor. Stock are 39cc/ea.

hope it helps

[totta Crolla]

''hope it helps''
Yes it does thanks. Lots.
If just 4cc is the window then measuring the chamber volume has got to be crucial to a reliable build.

[Sam-Q]

even 2cc is massive so yes put some grease around the valves and fill the chamber up to see where it is

[oldeskewltoy]

Stock are NOT 39cc.... at least not on the 3 heads I've checked.




Stock appears to be 36.5cc to 37cc. 39cc may be after someone has de-shrouded around the valves.

[drako323]

oldeskewltoy Wrote:Stock are NOT 39cc.... at least not on the 3 heads I've checked.

Is there something wrong with this picture or is it just me? Shouldn't the numbers increase as the fluid level goes up filling the pipe?

[Bean]

it's a burette at the beginning you fill it up (top is zero) - then you start letting fluid into the chamber to find out the volume by reading the value

[drako323]

Great! So no spilling and better accuracy. I shall have to get one when the time comes... Cheers!