Nrliftedranger
Full Access Member
hoping someone will chime in what is the allowable height /depth of the pre cups in the 7.3 idi heads
Nick
Nick
7.3 idi precup height/ depth specs
- Thread starter Nrliftedranger
- Start date
can't remember for certain but IIRC 0.002" + - above below head surface. However I'm sure Gary will be along and provide that information 100%
icanfixall
Official GMM hand model
Well heres the 100%.. The cups can be above or below the head deck 2 1/2 thousands. That looks like this. ).0025. Some that are not current on reading thousands like this will think this is telling them its 25 thousands but it sure is not. They are a very hard material called inconel. Its a very high grade heat resistant and erosion proof stainless steel. Most machine shops can't afford the special surfacing cutters to be able to mill the heads with the cups in them. But the better shops have this cutter and they are the ones you want to use. Removing the cups and chucking them up in a lathe or fly cutting them on a Bridgeport mill is plenty of work.
