Christmas in May

[squarebob]

I was showered with packages today. I got some batteries from BioHazard, a couple GM 90 head gaskets from Gaskets to Go, and a Trimetric TM 2025 meter and shunt from Arizona wind n sun. The gaskets really look good. I am currently running a wax soaked, copper stock gasket to prevent coolant leakage.

Bob

[veggie]

Bob,

Your copper gasket is leaking for a reason. They are usually quite adequate.
Some GM90's seem to have an issue with the cylinder liner protruding higher than normal.
(Lets attribute this to the high quality machining tolerances typical of the Rajkot district   )
Mine was .020" above the deck.
The standard is 0.003" to 0.005"
Check yours when you get the head off.
If it's too high, your new gaskets won't work.
(I know this because my GTG gasket leaked badly before I figure out the protrusion issue)

veggie

[BioHazard]

That's what I love about buying stuff online...I usually forget that I had to pay for it by the time it shows up.