col cos1

iTrader: (5)

whats everyones views on deck height of cylinder head when running cosworth racing 6.9.0 pistons(un pocketed)

when my engine was going together i noticed the when pistons up to the top of the block they actually sat in slightly

due to the low comp i pressume

anyway i opted out of useing the mint 4x4 head i had to get the porting on it was 138.76(1 skim)

and ive decided to use a late 2wd 1 i have at 138.6

and going to use another 3 layer cometic gasket

i run bd14s(pair)and have had no valve crash problems

would you use a 138.6 head for this bearing in mind it will need another skim before getting bolted on

col cos1

iTrader: (5)

up

pete mcrash

iTrader: (1)

giv it some time.......... .....

glancy2081

col how far in do the sit have you measured it to find out

bud-weis

i think the main problem with heads that have had too many skims is whether there is an adequate valve seat area.


although reading it agan i'm not 100% what you are asking?

are you worried more about valve/piston contact?

col cos1

iTrader: (5)

not measured it yet glancy

budweis main question is spending the dough on a head that will be 138.6mm- a skim

col cos1

iTrader: (5)

up

glancy2081

there is not enough info to give a anwser col