4ac head - how much can be safely removed??

[truenosedan]

Howdy guys

I am restoring an ae71 rally project, and the head is at the shop getting the cam done and port matching for the weber, they have asked me if i want to take any material off the head to raise compression slightly

but he only has the head and doesnt know how much can safely be removed?

it is a fair drive to take the whole engine their, so I was wondering if anyone knew?

Thanks in advance

[xero]

Will you be taking any material off the block or decking the block at all?

[MorGo]

1,5 mm or even 2 mm can be skimmed safely.And don't worry cam being retarded;it's only better that way.

[truenosedan]

Will you be taking any material off the block or decking the block at all?

block will be left as standard for now

1,5 mm or even 2 mm can be skimmed safely.And don't worry cam being retarded;it's only better that way.

thanks for that mate, will put it to him

have you done that yourself?

[xero]

1,5 mm or even 2 mm can be skimmed safely.And don't worry cam being retarded;it's only better that way.

pretty much what i was gonna say